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This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — STL
May 3 — May 101
From?
To?
Fri 5/3
Fri 5/10
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to St. Charles are usually found in September or October, booked 50 days in advance, depart on a Tuesday or Wednesday and return on a Thursday
Cheap flight deals from Seattle to St. Charles
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to St. Charles (CH5). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2024.
Popular in | June |
|---|---|
Cheapest in | September |
Round-trip from | $323 |
One-way from | $79 |
High demand for flights, 23% potential price rise
Best time to find cheap flights, 22% potential price drop
From Seattle/Tacoma Intl to St. Charles
One-way flight from Seattle/Tacoma Intl to St. Charles
How far in advance should I book a flight from Seattle to St. Charles?
To save on the cost of your flight from Seattle to St. Charles, book at least 51 days before your planned departure. Booking around this time can save you about 105% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $344 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $460.
What is the cheapest month to fly from Seattle to St. Charles?
Due to multiple factors, expect to potentially pay more when booking in June. For low rates, September can be a great choice for travel to St. Charles. Flights to St. Charles from Seattle in September are about $381 on average during September, but can be found for as low as $144.
When is the cheapest time to fly from Seattle to St. Charles (SEA - CH5)?
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to St. Charles as you normally would.
Cheap Frontier flights from Seattle to St. Charles
Explore cheap flight options specifically provided by Frontier for the route between Seattle and St. Charles. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Take a peek at the cheapest Frontier flights we've detected traveling from Seattle to St. Charles. Make sure to double check the flight details before booking.
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Wed 5/297:23 pmSTL - SEA
1 stop28h 49mFrontier
Deal found 4/27$198
Thu 5/95:31 pmSEA - STL
1 stop14h 47mFrontier
Mon 5/139:53 pmSTL - SEA
1 stop13h 51mFrontier
Deal found 4/27$199
Fri 5/109:40 amSEA - STL
1 stop9h 47mFrontier
Thu 5/1611:06 pmSTL - SEA
1 stop11h 39mFrontier
Deal found 4/28$200
Sun 5/2610:59 pmSEA - STL
1 stop9h 14mFrontier
Thu 5/305:01 pmSTL - SEA
1 stop29h 03mFrontier
Deal found 4/27$207
Sun 5/2610:59 pmSEA - STL
1 stop9h 14mFrontier
Wed 5/297:23 pmSTL - SEA
1 stop28h 49mFrontier
Deal found 4/27$208
Fri 5/109:40 amSEA - STL
1 stop9h 47mFrontier
Thu 5/167:23 pmSTL - SEA
1 stop26h 41mFrontier
Deal found 4/27$210
Sat 5/259:00 amSEA - STL
1 stop11h 49mFrontier
Thu 5/305:01 pmSTL - SEA
1 stop29h 03mFrontier
Deal found 4/27$211
Mon 5/278:00 pmSEA - STL
1 stop12h 13mFrontier
Mon 6/38:04 pmSTL - SEA
2 stops18h 53mFrontier
Deal found 4/28$212
Sat 5/2510:08 pmSEA - STL
1 stop22h 24mFrontier
Wed 5/297:23 pmSTL - SEA
1 stop28h 49mFrontier
Deal found 4/27$213
Cheap Alaska Airlines flights from Seattle to St. Charles
Explore cheap flight options specifically provided by Alaska Airlines for the route between Seattle and St. Charles. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Some of the best deals we've found on Alaska Airlines flights traveling from Seattle to St. Charles. Make sure to examine the flight information before completing your reservation.
Tue 6/45:58 pmSEA - STL
Nonstop4h 01mAlaska Airlines
Fri 6/77:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$257
Wed 5/226:00 pmSEA - STL
Nonstop3h 59mAlaska Airlines
Sun 5/267:00 amSTL - SEA
Nonstop4h 14mAlaska Airlines
Deal found 4/27$277
Mon 5/207:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Wed 5/297:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$295
Sun 5/267:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Tue 5/287:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/26$297
Sat 5/257:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Mon 5/277:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/26$307
Wed 6/125:58 pmSEA - STL
Nonstop4h 01mAlaska Airlines
Sun 6/167:00 amSTL - SEA
Nonstop4h 25mAlaska Airlines
Deal found 4/27$317
Sun 5/265:58 pmSEA - STL
Nonstop4h 01mAlaska Airlines
Mon 5/277:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$327
Sat 5/257:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Sun 6/27:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$342
Wed 5/2912:14 pmSEA - STL
1 stop7h 33mAlaska Airlines
Mon 6/37:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$356
Cheap Seattle to St. Charles flights in April & May 2024
Find cheap flight options from Seattle to St. Charles specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Prices were last updated on April 28, 2024.
Listed are some of the best fares we've found on flights departing from Seattle to St. Charles in 2024. For more flight deals, be sure to check back very soon.
Tue 5/219:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Thu 5/237:23 pmSTL - SEA
1 stop26h 41mMultiple Airlines
Deal found 4/26$154
Thu 5/3011:02 pmSEA - STL
1 stop9h 11mMultiple Airlines
Wed 6/51:55 pmSTL - SEA
1 stop8h 14mMultiple Airlines
Deal found 4/27$178
Sat 5/2510:08 pmSEA - STL
1 stop22h 24mMultiple Airlines
Wed 6/51:55 pmSTL - SEA
1 stop8h 14mMultiple Airlines
Deal found 4/27$184
Tue 5/219:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Sat 5/258:04 pmSTL - SEA
1 stop13h 00mMultiple Airlines
Deal found 4/26$189
Tue 5/289:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Wed 5/297:23 pmSTL - SEA
1 stop28h 49mMultiple Airlines
Deal found 4/27$193
Tue 5/289:40 pmSEA - STL
1 stop11h 06mSpirit Airlines
Fri 5/314:05 pmSTL - SEA
1 stop23h 53mSpirit Airlines
Deal found 4/27$196
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Wed 5/297:23 pmSTL - SEA
1 stop28h 49mFrontier
Deal found 4/27$198
Thu 5/95:31 pmSEA - STL
1 stop14h 47mFrontier
Mon 5/139:53 pmSTL - SEA
1 stop13h 51mFrontier
Deal found 4/27$199
Fri 5/108:30 pmSEA - STL
1 stop11h 48mFrontier
Mon 5/139:53 pmSTL - SEA
1 stop13h 51mFrontier
Deal found 4/27$200
Seattle to St. Charles 2024 flight deals
Discover exclusive flight deals for travel between Seattle and St. Charles in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Listed are some of the best fares we've found on flights departing from Seattle to St. Charles in 2024. For more flight deals, be sure to check back very soon.
Tue 5/219:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Thu 5/237:23 pmSTL - SEA
1 stop26h 41mMultiple Airlines
Deal found 4/26$154
Thu 5/3011:02 pmSEA - STL
1 stop9h 11mMultiple Airlines
Wed 6/51:55 pmSTL - SEA
1 stop8h 14mMultiple Airlines
Deal found 4/27$178
Sat 5/2510:08 pmSEA - STL
1 stop22h 24mMultiple Airlines
Wed 6/51:55 pmSTL - SEA
1 stop8h 14mMultiple Airlines
Deal found 4/27$184
Tue 5/219:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Sat 5/258:04 pmSTL - SEA
1 stop13h 00mMultiple Airlines
Deal found 4/26$189
Tue 5/289:40 pmSEA - STL
1 stop11h 06mMultiple Airlines
Wed 5/297:23 pmSTL - SEA
1 stop28h 49mMultiple Airlines
Deal found 4/27$193
Tue 9/1011:59 pmSEA - STL
1 stop8h 05mAmerican Airlines
Tue 9/172:38 pmSTL - SEA
1 stop10h 12mAmerican Airlines
Deal found 4/27$195
Tue 5/289:40 pmSEA - STL
1 stop11h 06mSpirit Airlines
Fri 5/314:05 pmSTL - SEA
1 stop23h 53mSpirit Airlines
Deal found 4/27$196
Mon 5/208:00 pmSEA - STL
1 stop12h 13mFrontier
Wed 5/297:23 pmSTL - SEA
1 stop28h 49mFrontier
Deal found 4/27$198
Thu 5/95:31 pmSEA - STL
1 stop14h 47mFrontier
Mon 5/139:53 pmSTL - SEA
1 stop13h 51mFrontier
Deal found 4/27$199
Non-stop flights to St. Charles from Seattle
Discover non-stop flight options from Seattle to St. Charles. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Take a look at some of the direct flights traveling from Seattle to St. Charles in the near future. Select from other flights from Seattle to St. Charles by using the search form above.
Tue 6/45:58 pmSEA - STL
Nonstop4h 01mAlaska Airlines
Fri 6/77:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$257
Wed 5/226:00 pmSEA - STL
Nonstop3h 59mAlaska Airlines
Sun 5/267:00 amSTL - SEA
Nonstop4h 14mAlaska Airlines
Deal found 4/27$277
Mon 5/207:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Wed 5/297:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$295
Sun 5/267:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Sun 5/267:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/26$297
Sat 5/257:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Mon 5/277:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/26$307
Wed 6/125:58 pmSEA - STL
Nonstop4h 01mAlaska Airlines
Sun 6/167:00 amSTL - SEA
Nonstop4h 25mAlaska Airlines
Deal found 4/27$317
Sun 5/265:58 pmSEA - STL
Nonstop4h 01mAlaska Airlines
Mon 5/277:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$327
Sat 5/257:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Sun 6/27:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/27$342
Thu 5/237:37 amSEA - STL
Nonstop3h 59mAlaska Airlines
Wed 5/297:41 pmSTL - SEA
Nonstop4h 19mAlaska Airlines
Deal found 4/26$357
Seattle to St. Charles flights leaving soon
Find last-minute flight options from Seattle to St. Charles for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Check out these flights departing soon from Seattle to St. Charles. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Tue 5/79:19 pmSEA - STL
1 stop11h 27mMultiple Airlines
Mon 5/2010:21 pmSTL - SEA
1 stop13h 34mMultiple Airlines
Deal found 4/27$203
Sat 5/49:32 pmSEA - STL
1 stop14h 57mFrontier
Wed 5/87:51 pmSTL - SEA
1 stop22h 40mFrontier
Deal found 4/27$210
Fri 5/39:40 amSEA - STL
1 stop9h 47mFrontier
Mon 5/69:53 pmSTL - SEA
1 stop13h 51mFrontier
Deal found 4/27$246
Thu 5/212:59 amSEA - STL
1 stop7h 37mAmerican Airlines
Mon 5/64:20 pmSTL - SEA
1 stop8h 21mAmerican Airlines
Deal found 4/27$264
Thu 5/26:00 pmSEA - STL
1 stop16h 20mMultiple Airlines
Sun 5/53:29 pmSTL - SEA
1 stop17h 51mMultiple Airlines
Deal found 4/27$316
Sat 5/47:15 amSEA - STL
2 stops11h 54mUnited Airlines
Wed 5/86:19 amSTL - SEA
1 stop8h 38mUnited Airlines
Deal found 4/27$361
Sat 5/49:38 amSEA - STL
3 stops29h 56mSpirit Airlines
Wed 5/811:36 amSTL - SEA
1 stop10h 53mSpirit Airlines
Deal found 4/27$412
Tue 5/711:43 pmSEA - STL
1 stop8h 10mAmerican Airlines
Mon 5/207:41 pmSTL - SEA
Nonstop4h 19mAmerican Airlines
Deal found 4/27$420
Mon 5/61:15 amSEA - STL
1 stop7h 22mAmerican Airlines
Mon 5/207:00 amSTL - SEA
Nonstop4h 14mAmerican Airlines
Deal found 4/27$421
One-way flights to St. Charles from Seattle
Search for one-way flight options from Seattle to St. Charles. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Users in need of a one-way flight from Seattle to St. Charles can choose from these deals. Users in need of a round-trip flight from Seattle to St. Charles instead should update the search form at the top of page.
Tue 6/49:35 amSEA - STL
1 stop25h 30mSpirit Airlines
Deal found 4/27$67
Tue 5/289:40 pmSEA - STL
1 stop11h 06mSpirit Airlines
Deal found 4/27$79
Mon 5/2011:10 pmSEA - STL
1 stop7h 52mAmerican Airlines
Deal found 4/26$98
Wed 5/89:55 amSEA - STL
1 stop8h 44mFrontier
Deal found 4/26$100
Wed 8/147:51 pmSEA - STL
1 stop12h 27mFrontier
Deal found 4/27$106
Mon 9/3011:59 pmSEA - STL
1 stop8h 05mAmerican Airlines
Deal found 4/28$107
Sat 5/2512:40 amSEA - STL
1 stop8h 30mDelta
Deal found 4/27$108
Sat 8/247:51 pmSEA - STL
1 stop12h 27mFrontier
Deal found 4/27$111
Fri 6/79:49 pmSEA - STL
1 stop10h 55mFrontier
Deal found 4/27$114
Find flights from Seattle to St. Charles within your budget
Customize your flight search to find flights from Seattle to St. Charles that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Fly from
Any airport
Fly to
Any airport
Budget
$154 - $270
Route
Depart
Return
Price
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Tue 5/21
1 stop11h 06m
Lambert-St Louis
Thu 5/23
1 stop26h 41m
$154
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Thu 5/30
1 stop9h 11m
Lambert-St Louis
Wed 6/5
1 stop8h 14m
$178
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Tue 9/10
1 stop8h 05m
Lambert-St Louis
Tue 9/17
1 stop10h 12m
$195
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Tue 5/28
1 stop11h 06m
Lambert-St Louis
Fri 5/31
1 stop23h 53m
$196
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Mon 5/20
1 stop12h 13m
Lambert-St Louis
Wed 5/29
1 stop28h 49m
$198
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Thu 5/9
1 stop14h 47m
Lambert-St Louis
Mon 5/13
1 stop13h 51m
$199
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Mon 8/26
1 stop9h 24m
Lambert-St Louis
Fri 8/30
1 stop10h 09m
$216
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Tue 6/4
Nonstop4h 01m
Lambert-St Louis
Fri 6/7
Nonstop4h 19m
$257
Seattle/Tacoma IntlLambert-St Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Thu 7/11
1 stop14h 30m
Lambert-St Louis
Sun 7/14
1 stop15h 31m
$270
Flights are sorted by cheapest first
Deals found on 4/26
When is the best time to book a flight from Seattle to St. Charles?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to St. Charles. Price data was last updated on January 28, 2024.
The best time to book flights from Seattle to St. Charles is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search DealsWhen is the cheapest time to fly from Seattle to St. Charles?
Use this chart to determine the cheapest time to fly round-trip from Seattle to St. Charles. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to St. Charles flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search DealsAverage price of flights to St. Charles by month
Plan your trip from Seattle to St. Charles by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to St. Charles is currently $99 while a round-trip flight costs $207. Price data was last updated on April 21, 2024.
Currently, September is the cheapest month in which you can book a flight from Seattle to St. Charles (average of $323). Flying from Seattle to St. Charles in July is currently the most expensive (average of $378). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
January
$326
February
$331
March
$357
April
$337
May
$350
June
$373
July
$378
August
$336
September
$323
October
$323
November
$336
December
$326
Temperature and rainfall in St. Charles by month
Plan your trip to St. Charles by taking into account the average temperature and rainfall totals by month.
STL Temperature | 32 - 80.6 °F |
|---|
Reviews of airlines servicing St. Charles
Get insights into the airlines that provide service to St. Charles. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Charles. Reviews last updated April 28, 2024.
Read through reviews of airlines operating flights from Seattle to St. Charles, such as Frontier, Alaska Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,111 reviews
Boarding
8.2
Comfort
7.9
Crew
8.6
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Alaska Airlines
8.1
Very good
9,111 reviews
Alaska Airlines
8.1
Very good
9,111 reviews
Boarding
8.2
Comfort
7.9
Crew
8.6
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Delta
8.1
Very good
10,934 reviews
Alaska Airlines
8.1
Very good
9,111 reviews
Boarding
8.2
Comfort
7.9
Crew
8.6
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
United Airlines
7.4
Good
11,219 reviews
Alaska Airlines
8.1
Very good
9,111 reviews
Boarding
8.2
Comfort
7.9
Crew
8.6
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
American Airlines
7.3
Good
14,844 reviews
Alaska Airlines
8.1
Very good
9,111 reviews
Boarding
8.2
Comfort
7.9
Crew
8.6
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Sun Country Air
7.3
Good
657 reviews
Alaska Airlines
8.1
Very good
9,111 reviews
Boarding
8.2
Comfort
7.9
Crew
8.6
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Related info for your journey
Find useful and relevant information for your journey from Seattle to St. Charles. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly from for flights from Seattle to St. Charles?
If you book a flight to St. Charles from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 6 flights from Seattle/Tacoma Intl to St. Charles per day from 6 different airlines.
Can I find flights from Seattle to St. Charles for under $200 on Cheapflights?
Yes, there are multiple flights from Seattle to St. Charles for under $200. The cheapest flight booked recently is on Multiple Airlines for just $154, but on average you can expect to pay $199.
Are there nonstop flights from Seattle to St. Charles for under $300 on Cheapflights?
Cheapflights has at least 20 direct flights from Seattle to St. Charles under $300. A good price for a nonstop flight from Seattle to St. Charles is less than $371.
Are there last-minute flights available from Seattle to St. Charles for under $300?
There are currently 20+ open flights from Seattle to St. Charles within the next 7 days for less than $300.
How popular is this Seattle to St. Charles flight route?
This flight path from Seattle/Tacoma Intl to St. Charles was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines to fly from Seattle to St. Charles one-way?
To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $67. American Airlines flights start at $98 while deals on Frontier start at $100 one-way.
What are the most popular airlines that fly from Seattle to St. Charles?
Before booking your flight from Seattle to St. Charles check out the most popular airlines for this route: American Airlines, Alaska Airlines or Delta.
What are the most reliable airlines from Seattle to St. Charles?
The top 3 most reliable airlines when flying from Seattle to St. Charles are American Airlines (94%), Alaska Airlines (90%) and Air Tahiti Nui (90%).
What are the cheapest flights from Seattle to St. Charles?
On average you can expect to pay $342 for a flight from Seattle to St. Charles. The cheapest flight overall is $118 while the most popular route, (Seattle/Tacoma Intl - Lambert-St Louis) is currently priced at $154.
What does SEA to STL mean?
SEA and STL are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. SEA to STL refers to a flight route from Seattle/Tacoma Intl Airport to Lambert-St Louis Airport. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Columbia Regional Airport (COU), Springfield Capital Airport (SPI), Belleville Airport (BLV), Quincy Regional Airport (UIN).
Can I find deals for flights from Seattle to St. Charles that include extra baggage allowance?
The amount of baggage you can bring on your Seattle to St. Charles flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.
Can I find deals on flights from Seattle to St. Charles with specific airlines?
Yes, Cheapflights allows you to browse and filter Seattle to St. Charles flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.
Can I find deals for flights from Seattle to St. Charles that include hotel bookings?
Yes. In addition to deals on Seattle to St. Charles flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to St. Charles?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to St. Charles.
Can I find deals for business class flights from Seattle to St. Charles?
Yes. Cheapflights offers flight deals from Seattle to St. Charles by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Can I find deals for flights from Seattle to St. Charles that allow pets onboard?
Many airlines flying from Seattle to St. Charles offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.
Can I find deals on last-minute flights from Seattle to St. Charles?
Yes, you can often find last-minute deals on Seattle to St. Charles flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.
How recently were the Seattle to St. Charles flight deals updated?
The Seattle to St. Charles flight deals you see on this page were last updated on 4/27.
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Alternative routes for Seattle to St. CharlesSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
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Complete your tripComplete your trip to St. Charles by adding a car rental and/or hotel reservation to your travel itinerary.
Complete your trip to St. Charles by adding a car rental and/or hotel reservation to your travel itinerary.
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Seattle and St. Charles flightsBrowse other Seattle and St. Charles flight options. Last updated on April 28, 2024.
Browse other Seattle and St. Charles flight options. Last updated on April 28, 2024.
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Other flights from SeattleBrowse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on April 28, 2024.
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on April 28, 2024.
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Seattle to St. Charles flightsConsider these flights traveling from Seattle to St. Charles.
Consider these flights traveling from Seattle to St. Charles.
Seattle to St. Charles flights
Top 6 airlines flying from Seattle to St. Charles
Discover the top 6 airlines that operate flights from Seattle to St. Charles. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
| Airline | Cheapest | Average | Flexibility | On-time | |
|---|---|---|---|---|---|
| Frontier | Cheapest$112 | Average$254 | FlexibilityNo cancel fee | On-time62% | Search Frontier flights |
| Delta | Cheapest$151 | Average$297 | FlexibilityNo cancel fee | On-timeN/A | Search Delta flights |
| Spirit Airlines | Cheapest$156 | Average$301 | FlexibilityNo cancel fee | On-time65% | Search Spirit Airlines flights |
| American Airlines | Cheapest$157 | Average$560 | FlexibilityNo cancel fee | On-time71% | Search American Airlines flights |
| United Airlines | Cheapest$164 | Average$316 | FlexibilityNo cancel fee | On-time69% | Search United Airlines flights |
| Alaska Airlines | Cheapest$186 | Average$366 | FlexibilityNo cancel fee | On-time75% | Search Alaska Airlines flights |
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Search flights from Seattle to St. Charles by cabin class
Find flights from Seattle to St. Charles, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from Seattle to St. Charles
Find hourly flight availability from Seattle to St. Charles. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 28, 2024.
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 44%of flight departures | Morning6 am to noon |
| 55%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
Midnight
6 AM
Noon
6 PM
Weekly flight availability from Seattle to St. Charles
Explore weekly flight availability from Seattle to St. Charles. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 28, 2024.
| Sunday | 9daily flights |
|---|---|
| Monday | 8daily flights |
| Tuesday | 4daily flights |
| Wednesday | 8daily flights |
| Thursday | 4daily flights |
| Friday | 8daily flights |
| Saturday | 3daily flights |
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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to St. Charles. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Seattle to St. Charles?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Charles from Seattle.
Can Cheapflights find flights from Seattle to St. Charles with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to St. Charles flexibly with Cheapflights today.
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