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SEA - STL
Sep 16 - Sep 23
St. Louis

$58+ Cheap flights from Seattle to St. Louis (SEA - STL)

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Sep 16 — Sep 231
Mon 9/16
Mon 9/23
1 adult, Economy
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SEA - STL
Sep 16 - Sep 23

Find cheap flights from Seattle to St. Louis with Cheapflights

1. Tell us where you want to go
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The best prices from Seattle/Tacoma Intl to Lambert-St Louis are usually found in January or February, booked 71 days in advance, depart on a Saturday or Sunday and return on a Friday

Cheap flight deals from Seattle to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to St. Louis (STL). 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 September 11, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

January

Round-trip from

$115
(Mytrip)

One-way from

$58
(Cheapflightsfares)
Provider with most accurate pricing for Seattle/Tacoma Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Lambert-St Louis flights.
Search Deals
High demand for flights, 23% potential price rise
Search Deals
Best time to find cheap flights, 31% potential price drop
Search Deals
From Seattle/Tacoma Intl to Lambert-St Louis
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One-way flight from Seattle/Tacoma Intl to Lambert-St Louis
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Cheap Seattle to St. Louis flights in September & October 2024

Find cheap flight options from Seattle to St. Louis specifically for the months of September and October 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,873,399 searches. Prices were last updated on September 11, 2024.
Listed are some of the best fares we've found on flights departing from Seattle to St. Louis in 2024. Check back regularly for other flight deals.
This Alaska Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/226:08 pmSEA - STL
Nonstop3h 50mAlaska Airlines
Fri 10/252:25 pmSTL - SEA
Nonstop4h 34mAlaska Airlines
Deal found 9/11$217
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/279:36 pmSEA - STL
1 stop23h 57mFrontier
Mon 9/303:53 pmSTL - SEA
1 stop6h 23mFrontier
Deal found 9/10$218
This FareScan deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2612:44 pmSEA - STL
1 stop6h 23mSpirit Airlines
Sun 9/299:58 pmSTL - SEA
2 stops28h 12mSpirit Airlines
Deal found 9/11$224
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/412:30 amSEA - STL
1 stop8h 11mDelta
Wed 10/96:25 pmSTL - SEA
1 stop7h 40mDelta
Deal found 9/10$226
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/279:36 pmSEA - STL
1 stop23h 57mMultiple Airlines
Sun 9/299:58 pmSTL - SEA
2 stops28h 12mMultiple Airlines
Deal found 9/11$235
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/711:59 pmSEA - STL
1 stop6h 46mAmerican Airlines
Fri 10/116:25 pmSTL - SEA
1 stop7h 00mAmerican Airlines
Deal found 9/11$246
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/35:00 amSEA - STL
2 stops11h 10mSouthwest
Fri 10/48:30 pmSTL - SEA
1 stop6h 00mSouthwest
Deal found 9/11$251
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/96:45 amSEA - STL
2 stops11h 02mUnited Airlines
Sat 10/127:15 amSTL - SEA
1 stop10h 09mUnited Airlines
Deal found 9/11$290

Seattle to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Seattle and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,873,399 searches. Data last updated September 11, 2024.
Listed are some of the best fares we've found on flights departing from Seattle to St. Louis in 2024. Check back regularly for other flight deals.
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/109:47 pmSEA - STL
1 stop24h 00mFrontier
Sat 10/125:20 pmSTL - SEA
1 stop16h 40mFrontier
Deal found 9/10$115
This FareScan deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/189:50 pmSEA - STL
1 stop13h 14mSpirit Airlines
Wed 11/201:59 pmSTL - SEA
1 stop8h 51mSpirit Airlines
Deal found 9/10$124
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/254:05 pmSEA - STL
1 stop27h 02mMultiple Airlines
Tue 10/15:30 pmSTL - SEA
1 stop27h 51mMultiple Airlines
Deal found 9/10$162
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1012:15 amSEA - STL
1 stop7h 31mAmerican Airlines
Sat 12/141:36 pmSTL - SEA
1 stop8h 15mAmerican Airlines
Deal found 9/10$196
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/16:08 pmSEA - STL
Nonstop3h 50mAlaska Airlines
Tue 10/87:00 amSTL - SEA
Nonstop4h 31mAlaska Airlines
Deal found 9/10$197
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/165:25 pmSEA - STL
1 stop5h 20mDelta
Fri 10/186:25 pmSTL - SEA
1 stop7h 40mDelta
Deal found 9/10$216
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/35:00 amSEA - STL
2 stops11h 10mSouthwest
Fri 10/44:35 pmSTL - SEA
1 stop9h 55mSouthwest
Deal found 9/10$251
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/17:20 amSEA - STL
1 stop7h 02mUnited Airlines
Tue 10/811:09 amSTL - SEA
2 stops13h 13mUnited Airlines
Deal found 9/10$311

Seattle to St. Louis flights leaving soon

Find last-minute flight options from Seattle to St. Louis 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 2,873,399 searches. Data last updated September 11, 2024.
Check out these flights departing soon from Seattle to St. Louis. To prevent any unwanted surprises, users should verify their flight info before booking.
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/188:21 pmSEA - STL
1 stop24h 58mFrontier
Mon 9/233:53 pmSTL - SEA
1 stop6h 23mFrontier
Deal found 9/10$228
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/216:00 amSEA - STL
2 stops13h 52mUnited Airlines
Fri 9/277:15 amSTL - SEA
1 stop10h 09mUnited Airlines
Deal found 9/11$313
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/185:30 amSEA - STL
1 stop6h 10mDelta
Wed 9/186:30 pmSTL - SEA
1 stop7h 29mDelta
Deal found 9/10$348
This FareScan deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/184:05 pmSEA - STL
1 stop27h 02mSpirit Airlines
Mon 9/238:57 amSTL - SEA
3 stops28h 47mSpirit Airlines
Deal found 9/10$408
This Orbitz deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/219:01 amSEA - STL
1 stop12h 32mMultiple Airlines
Fri 9/272:34 pmSTL - SEA
Nonstop4h 25mMultiple Airlines
Deal found 9/11$409
This Alaska Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/217:29 amSEA - STL
Nonstop3h 57mAlaska Airlines
Fri 9/272:34 pmSTL - SEA
Nonstop4h 25mAlaska Airlines
Deal found 9/11$497
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1912:22 amSEA - STL
1 stop8h 54mAmerican Airlines
Mon 9/235:47 pmSTL - SEA
1 stop7h 13mAmerican Airlines
Deal found 9/10$528

One-way flights to St. Louis from Seattle

Search for one-way flight options from Seattle to St. Louis. 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 2,873,399 searches. Data last updated September 11, 2024.
Users in need of a one-way flight from Seattle to St. Louis can choose from these deals. Those seeking round-trip flights from Seattle to St. Louis should utilize the search form at the the top of the page.
This Cheapflightsfares deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/119:50 pmSEA - STL
1 stop13h 14mSpirit Airlines
Deal found 9/10$58
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/97:51 pmSEA - STL
1 stop12h 27mFrontier
Deal found 9/9$60
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/126:50 amSEA - STL
2 stops8h 15mSouthwest
Deal found 9/10$83
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1112:30 amSEA - STL
1 stop8h 00mDelta
Deal found 9/10$88
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/127:35 amSEA - STL
Nonstop3h 53mAlaska Airlines
Deal found 9/10$99
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/87:46 pmSEA - STL
2 stops12h 21mUnited Airlines
Deal found 9/10$158
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/109:01 pmSEA - STL
3 stops36h 29mMultiple Airlines
Deal found 9/10$165
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/91:42 amSEA - STL
1 stop6h 22mAmerican Airlines
Deal found 9/9$218

Find flights from Seattle to St. Louis within your budget

Customize your flight search to find flights from Seattle to St. Louis 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 2,873,399 searches. Data last updated September 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$115 - $311

Route

Depart

Return

Price

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 10/10

1 stop24h 00m

Lambert-St Louis

Sat 10/12

1 stop16h 40m

$115

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Mon 11/18

1 stop13h 14m

Lambert-St Louis

Wed 11/20

1 stop8h 51m

$124

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 9/25

1 stop27h 02m

Lambert-St Louis

Tue 10/1

1 stop27h 51m

$162

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Tue 12/10

1 stop7h 31m

Lambert-St Louis

Sat 12/14

1 stop8h 15m

$196

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Tue 10/1

Nonstop3h 50m

Lambert-St Louis

Tue 10/8

Nonstop4h 31m

$197

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 10/16

1 stop5h 20m

Lambert-St Louis

Mon 10/21

1 stop7h 40m

$216

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 10/3

2 stops11h 10m

Lambert-St Louis

Fri 10/4

1 stop9h 55m

$251

Seattle/Tacoma IntlLambert-St Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Tue 10/1

1 stop7h 02m

Lambert-St Louis

Tue 10/8

2 stops13h 13m

$311

Flights are sorted by cheapest first

Deals found on 9/10

Compare providers for flights from Seattle to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to St. Louis in September.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapflightsfaresPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapfaremartPrice Accuracy0 starsTrust Score*3 starsCancellation PolicyAirline Policy
Booking.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
PricelinePrice Accuracy2 starsTrust Score*3 starsCancellation PolicyAirline Policy
FareScanPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyNo Information
Justfly.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to St. Louis

Get recent, data-driven insights about flights from Seattle to St. Louis including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to St. Louis. Price data was last updated on September 6, 2024.

The best time to book flights from Seattle to St. Louis is 71 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.

Find deals

What is the cheapest month to book a flight from Seattle to St. Louis?

Currently, March is the cheapest month in which you can book a flight from Seattle to St. Louis (average of $110). Flying from Seattle to St. Louis in June is currently the most expensive (average of $226). 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.

What is the cheapest time of day to fly from SEA to STL?

Find hourly flight availability from Seattle to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2024.

When flying from Seattle to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 29% versus a flight in the afternoon.

What is the cheapest day to fly from Seattle to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Seattle to St. Louis. Price data was last updated on September 8, 2024.

Travelers seeking maximum savings on their Seattle to St. Louis flight should consider departing on Sunday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Find deals

Weekly flight availability from Seattle to St. Louis

Explore weekly flight availability from Seattle to St. Louis. 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 September 11, 2024.

The most flights from SEA to STL are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

What are the most popular airlines that fly from Seattle to St. Louis?

Our users search for these airlines the most when looking for flights from Seattle to St. Louis. Data last updated on September 11, 2024.

Alaska Airlines, Delta and American Airlines are the most popular airlines when flying from Seattle to St. Louis.

Alaska Airlines

Alaska Airlines

From $198

Delta

Delta

From $209

American Airlines

American Airlines

From $157

Frontier

Frontier

From $124

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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. Louis. Reviews last updated September 11, 2024.
Get a feel of what it's like to fly with Spirit Airlines, Frontier and Delta from Seattle to St. Louis by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
5,344 reviews

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.2
Very good
5,344 reviews
Southwest
8.2
Very good
5,344 reviews

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,358 reviews
Southwest
8.2
Very good
5,344 reviews

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
9,126 reviews
Southwest
8.2
Very good
5,344 reviews

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,580 reviews
Southwest
8.2
Very good
5,344 reviews

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.3
Good
10,000 reviews
Southwest
8.2
Very good
5,344 reviews

Overall

8.2

Entertainment

7.8

Boarding

8.3

Food

7.3

Crew

8.7

Comfort

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Seattle to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to St. Louis?

    If you book a flight from Seattle to St. Louis, you will be flying from Seattle/Tacoma Intl to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Seattle/Tacoma Intl (SEA) take 3h 48m for a nonstop flight. There are 8 flights from Seattle/Tacoma Intl to St. Louis per day from 5 airlines.

  • Can I find flights from Seattle to St. Louis for under $200 on Cheapflights?

    Yes, there are multiple flights from Seattle to St. Louis for under $200. The cheapest flight booked recently is on Frontier for just $115, but on average you can expect to pay $196.

  • Are there nonstop flights from Seattle to St. Louis for under $200 on Cheapflights?

    Cheapflights has at least 2 direct flights from Seattle to St. Louis under $200. A good price for a nonstop flight from Seattle to St. Louis is less than $364.

  • Are there last-minute flights available from Seattle to St. Louis for under $300?

    There are currently 7+ open flights from Seattle to St. Louis within the next 7 days for less than $300.

  • What days are nonstop flights available from Seattle to St. Louis?

    You can find nonstop flights on the following days: Sunday, Monday, Thursday, Friday.

  • How popular is this Seattle to St. Louis flight route?

    The Seattle/Tacoma Intl to Lambert-St Louis flight path was viewed by 31 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How many flights depart from Seattle to St. Louis on average per day?

    On average 11 flights depart from Seattle to St. Louis per day.
    Morning (6am - Noon) - 55% of flight departures
    Evening (6pm - Midnight) - 45% of flight departures

  • How long is the flight from Seattle to St. Louis?

    Frontier, Spirit Airlines, and American Airlines can get you from Seattle to St. Louis in just under 7h 31m. Your travel time can differ by up to 16h 29m. Airlines will cover a distance of 1714 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to St. Louis round-trip?

    Cheapflights users have booked flights from Seattle to St. Louis round-trip from $115. Other airlines that can offer you cheap pricing are Spirit Airlines, from $124, and American Airlines, from $196. These flights start at 66% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to St. Louis one-way?

    $58 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and Southwest, with prices starting from $60 and $83, respectively.

  • What are the most reliable airlines from Seattle to St. Louis?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to St. Louis on time: American Airlines (77%), Alaska Airlines (77%), Air Tahiti Nui (75%).

  • What are the cheapest flights from Seattle to St. Louis?

    The cheapest flight price from Seattle to St. Louis is $128. On average you can expect to pay $287. The most popular route, (Seattle/Tacoma Intl - Lambert-St Louis), can usually be booked for $124.

  • What does SEA to STL mean?

    SEA stands for Seattle/Tacoma Intl Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Seattle to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on