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$54+ Cheap flights from St. Louis (STL) to Washington

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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from St. Louis to Washington

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Washington (USWA). 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 November 20, 2024.

Find flight deals from St. Louis to Washington

Cheapest flights from St. Louis to Washington
Explore the most affordable flight options available from St. Louis to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Booking.com deal was found by Cheapflights users on 11/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/158:34 pmSTL - SEA
1 stop14h 23mFrontier
Wed 12/189:36 pmSEA - STL
1 stop21h 43mFrontier
Deal found 11/18$220
This Delta deal was found by Cheapflights users on 11/19. 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 12/186:30 pmSTL - SEA
1 stop7h 51mDelta
Wed 12/256:00 amSEA - STL
1 stop8h 59mDelta
Deal found 11/19$227
This CheapOair deal was found by Cheapflights users on 11/20. 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 12/116:46 pmSTL - PDX
1 stop7h 29mFrontier
Wed 12/187:15 pmPDX - STL
1 stop13h 55mFrontier
Deal found 11/20$248
This Delta deal was found by Cheapflights users on 11/20. 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.
Thu 12/122:25 pmSTL - PDX
2 stops11h 04mDelta
Mon 12/1611:13 pmPDX - STL
1 stop8h 22mDelta
Deal found 11/20$266
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/134:31 pmSTL - PDX
1 stop6h 43mUnited Airlines
Sun 12/157:00 amPDX - STL
1 stop7h 38mUnited Airlines
Deal found 11/20$274
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/257:00 amSTL - SEA
Nonstop4h 37mAlaska Airlines
Tue 12/317:35 amSEA - STL
Nonstop3h 52mAlaska Airlines
Deal found 11/20$282
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Mon 12/234:43 pmSTL - SEA
1 stop8h 34mUnited Airlines
Mon 12/305:00 amSEA - STL
1 stop5h 48mUnited Airlines
Deal found 11/19$301
This Delta deal was found by Cheapflights users on 11/19. 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.
Thu 12/122:25 pmSTL - GEG
2 stops11h 41mDelta
Mon 12/165:00 amGEG - STL
2 stops10h 40mDelta
Deal found 11/19$303
This American Airlines deal was found by Cheapflights users on 11/19. 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 12/127:20 amSTL - GEG
1 stop8h 23mAmerican Airlines
Mon 12/163:21 pmGEG - STL
1 stop6h 33mAmerican Airlines
Deal found 11/19$316
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/411:51 amSTL - PDX
1 stop7h 49mAmerican Airlines
Wed 12/115:00 amPDX - STL
1 stop6h 32mAmerican Airlines
Deal found 11/20$330
This American Airlines deal was found by Cheapflights users on 11/19. 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 12/91:36 pmSTL - SEA
1 stop8h 15mAmerican Airlines
Sat 12/1412:45 amSEA - STL
1 stop8h 02mAmerican Airlines
Deal found 11/19$332
This Expedia deal was found by Cheapflights users on 11/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/242:23 pmSTL - SEA
Nonstop4h 37mMultiple Airlines
Fri 1/39:36 pmSEA - STL
1 stop8h 37mMultiple Airlines
Deal found 11/19$353

Find flights from St. Louis to Washington within your budget

Customize your flight search to find flights from St. Louis to Washington 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 1/29

1:40 pm-9:50 pm

1 stop10h 10m

Portland

Wed 2/12

5:31 am-3:10 pm

1 stop7h 39m

$198

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Mon 2/17

4:39 pm-10:45 pm

1 stop8h 06m

Seattle/Tacoma Intl

Sat 2/22

8:50 am-4:33 pm

1 stop5h 43m

$216

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Wed 1/29

2:49 pm-5:30 pm

Nonstop4h 41m

Seattle/Tacoma Intl

Tue 2/4

8:00 am-1:53 pm

Nonstop3h 53m

$217

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Wed 12/4

6:46 pm-11:29 am

1 stop18h 43m

Seattle/Tacoma Intl

Sun 1/5

8:26 pm-8:29 pm

1 stop22h 03m

$218

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Tue 12/10

6:30 pm-12:23 am

1 stop7h 53m

Seattle/Tacoma Intl

Tue 12/17

5:20 pm-12:57 am

1 stop5h 37m

$221

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 1/23

2:49 pm-8:46 pm

1 stop7h 57m

Portland

Mon 1/27

4:30 pm-1:53 pm

1 stop19h 23m

$226

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Tue 2/11

7:00 am-1:06 pm

1 stop8h 06m

Seattle/Tacoma Intl

Mon 2/17

12:59 am-9:59 am

1 stop7h 00m

$236

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 2/18

5:00 pm-11:54 pm

1 stop8h 54m

Portland

Sun 2/23

6:05 am-4:45 pm

1 stop8h 40m

$238

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 1/2

10:09 pm-3:44 pm

1 stop19h 35m

Portland

Sun 1/5

12:45 pm-8:13 am

1 stop17h 28m

$248

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Sat 1/18

6:30 am-6:44 pm

2 stops14h 14m

Spokane

Sat 1/25

11:22 am-11:14 pm

2 stops9h 52m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 49 results
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Best time to book a flight from St. Louis to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from St. Louis 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 St. Louis to Washington

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

What is the cheapest month to book a flight from St. Louis to State of Washington?

Currently, January is the cheapest month in which you can book a flight from St. Louis to State of Washington (average of $238). Flying from St. Louis to State of Washington in July is currently the most expensive (average of $411). 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 STL to WA?

Find hourly flight availability from St. Louis to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

When flying from St. Louis to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated November 20, 2024.
Get a feel of what it's like to fly with United Airlines, Alaska Airlines and Frontier from St. Louis to Washington by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

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

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

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

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

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

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

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

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

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 St. Louis to Washington. 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 St. Louis to Washington?

    For a flight from St. Louis to Washington, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

  • How popular is this St. Louis to State of Washington flight route?

    The Lambert-St Louis to Washington flight path was viewed by 42 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 St. Louis to State of Washington one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $54. Delta flights start at $99 while deals on United Airlines start at $108 one-way.

  • What are the most popular routes from St. Louis to State of Washington?

    When deciding which route to take from St. Louis to State of Washington consider Lambert-St Louis - Seattle/Tacoma Intl, Lambert-St Louis - Portland or Lambert-St Louis - Spokane as they are the most popular.

  • What are the most reliable airlines from St. Louis to State of Washington?

    The top 3 most reliable airlines when flying from St. Louis to State of Washington are Qatar Airways (97%), Air Tahiti Nui (97%) and Japan Airlines (95%).

  • What are the cheapest flights from St. Louis to State of Washington?

    Looking for the cheapest flight from St. Louis to State of Washington? While on average our users pay $1,011, our data indicates the cheapest price to be $128. The most popular route (Lambert-St Louis - Seattle/Tacoma Intl), is priced around $178.

  • Can I find deals for flights from St. Louis to Washington that include hotel bookings?

    Yes. In addition to deals on St. Louis to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Washington.

  • Can I find deals for business class flights from St. Louis to Washington?

    Yes. Cheapflights offers flight deals from St. Louis to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to State of Washington (average of $238). Flying from St. Louis to State of Washington in July is currently the most expensive (average of $411). 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.

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Alternative routes for St. Louis to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from St. Louis to Washington

Discover the top 7 airlines that operate flights from St. Louis to Washington. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$122Average$200FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$125Average$171FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$166Average$407FlexibilityNo cancel feeOn-time71%
DeltaCheapest$193Average$377FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$220Average$526FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$236Average$537FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$266Average$461FlexibilityNo cancel feeOn-time63%
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