Washington, D.C.

$53+ Cheap flights from St. Louis (STL) to Washington, D.C. (WAS)

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — WAS
Nov 5 — Nov 121
1 adult
Tue 11/5
Tue 11/12
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1. Tell us where you want to go
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The best prices from Lambert-St Louis to Washington, D.C. are usually found in January or February, booked 81 days in advance, depart on a Wednesday or Saturday and return on a Saturday

Cheap flight deals from St. Louis to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Washington, D.C. (WAS). 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 October 31, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

October

Cheapest in

January

Round-trip from

$116
(Flightnetwork)

One-way from

$53
(Cheapflightsfares)
Provider with most accurate pricing for Lambert-St Louis-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Washington, D.C. (WAS) flights.
High demand for flights, 27% potential price rise
Best time to find cheap flights, 23% potential price drop
From Lambert-St Louis to Washington, D.C. (WAS)
One-way flight from Lambert-St Louis to Washington, D.C. (WAS)

Find flight deals from St. Louis to Washington, D.C.

Cheapest flights from St. Louis to Washington, D.C.
Explore the most affordable flight options available from St. Louis to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2024.

This Mytrip deal was found by Cheapflights users on 10/30. 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 12/65:02 pmSTL - BWI
1 stop23h 32mFrontier
Tue 12/1010:10 amBWI - STL
1 stop14h 14mFrontier
Deal found 10/30$118
This American Airlines deal was found by Cheapflights users on 10/30. 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 11/205:00 amSTL - BWI
1 stop7h 02mAmerican Airlines
Sun 11/245:00 amBWI - STL
1 stop4h 49mAmerican Airlines
Deal found 10/30$158
This Booking.com deal was found by Cheapflights users on 10/30. 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.
Wed 11/135:27 pmSTL - BWI
1 stop25h 56mMultiple Airlines
Tue 11/196:45 amBWI - STL
1 stop10h 49mMultiple Airlines
Deal found 10/30$187
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/126:30 amSTL - DCA
Nonstop1h 56mAmerican Airlines
Fri 11/157:50 pmDCA - STL
Nonstop2h 27mAmerican Airlines
Deal found 10/29$193
This Mytrip deal was found by Cheapflights users on 10/31. 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 11/205:27 pmSTL - DCA
1 stop17h 39mFrontier
Thu 11/216:00 pmDCA - STL
1 stop7h 06mFrontier
Deal found 10/31$196
This Delta deal was found by Cheapflights users on 10/30. 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.
Tue 12/106:30 amSTL - BWI
1 stop4h 14mDelta
Sun 12/156:00 amBWI - STL
1 stop7h 03mDelta
Deal found 10/30$196
This Delta deal was found by Cheapflights users on 10/30. 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 11/206:30 amSTL - IAD
1 stop4h 04mDelta
Sun 11/246:00 amIAD - STL
1 stop4h 36mDelta
Deal found 10/30$196
This Delta deal was found by Cheapflights users on 10/30. 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 11/216:00 amSTL - DCA
1 stop5h 49mDelta
Sun 11/246:59 amDCA - STL
1 stop6h 05mDelta
Deal found 10/30$197
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/138:25 amSTL - IAD
Nonstop2h 11mUnited Airlines
Tue 11/198:35 amIAD - STL
Nonstop2h 26mUnited Airlines
Deal found 10/30$211
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/135:40 pmSTL - DCA
1 stop5h 13mUnited Airlines
Mon 1/207:00 amDCA - STL
1 stop6h 16mUnited Airlines
Deal found 10/30$230
This United Airlines deal was found by Cheapflights users on 10/31. 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 11/155:40 pmSTL - BWI
1 stop4h 33mUnited Airlines
Tue 11/1910:53 amBWI - STL
1 stop5h 46mUnited Airlines
Deal found 10/31$230
This Southwest deal was found by Cheapflights users on 10/31. 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.
Sun 12/87:55 pmSTL - DCA
Nonstop1h 55mSouthwest
Wed 12/118:45 amDCA - STL
Nonstop2h 30mSouthwest
Deal found 10/31$265

Find flights from St. Louis to Washington, D.C. within your budget

Customize your flight search to find flights from St. Louis to Washington, D.C. 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 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 11/18

12:41 pm-8:18 pm

1 stop6h 37m

$53

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 11/20

7:05 am-1:02 pm

1 stop4h 57m

$79

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 12/3

5:21 pm-8:38 am

2 stops14h 17m

$90

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Sun 12/15

6:00 am-10:54 am

1 stop3h 54m

$98

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Thu 12/12

10:10 am-3:35 pm

1 stop4h 25m

$106

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 11/18

2:10 pm-7:49 pm

2 stops28h 39m

$131

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 11/20

12:25 pm-3:20 pm

Nonstop1h 55m

$140

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 12/18

6:49 pm-9:59 pm

1 stop26h 10m

$96

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Wed 11/13

6:30 am-9:26 am

Nonstop1h 56m

$97

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 11/28

6:30 am-11:47 am

1 stop4h 17m

$98

Flights are sorted by cheapest first

Deals found on 10/29

Showing 1-10 of 36 results
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Compare providers for flights from St. Louis to Washington, D.C.

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 St. Louis to Washington, D.C. in October.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice 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 St. Louis-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Washington, D.C. 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 St. Louis-Washington, D.C. 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 St. Louis to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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, D.C.

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

How far ahead should I book a flight from St. Louis to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Washington, D.C.. Price data was last updated on October 25, 2024.

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Washington, D.C. (average of $241). Flying from St. Louis to Washington, D.C. in January is currently the most expensive (average of $273). 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 WAS?

Find hourly flight availability from St. Louis to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 31, 2024.

It’s typically best to fly out from St. Louis to Washington, D.C. in the evening. Doing so could potentially save you 28% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from St. Louis to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Washington, D.C.. Price data was last updated on October 27, 2024.

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

Rainfall in Washington, D.C. by month

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

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

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

If weather is an important factor for your trip to Washington, D.C., 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 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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, D.C.. Reviews last updated October 31, 2024.
Peruse reviews from past customers who have flown with Southwest, Frontier and American Airlines from St. Louis to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
5,116 reviews

Food

7.2

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

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

8.1
Very good
5,116 reviews
8.1
Very good
5,116 reviews

Food

7.2

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

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

8.0
Very good
8,835 reviews
8.1
Very good
5,116 reviews

Food

7.2

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

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

Avelo Airlines
7.5
Good
74 reviews
8.1
Very good
5,116 reviews

Food

7.2

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

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

7.4
Good
9,240 reviews
8.1
Very good
5,116 reviews

Food

7.2

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.3

Reviews

1 / 10

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

7.2
Good
10,000 reviews
8.1
Very good
5,116 reviews

Food

7.2

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.3

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, D.C.. 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, D.C.?

    If you book a flight to Washington, D.C. from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 8 flights from Lambert-St Louis to Washington, D.C. per day from 6 different airlines.

  • Can I find flights from St. Louis to Washington, D.C. for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Washington, D.C. for under $200. The cheapest flight booked recently is on Frontier for just $116, but on average you can expect to pay $241.

  • Are there nonstop flights from St. Louis to Washington, D.C. for under $200 on Cheapflights?

    Cheapflights has at least 4 direct flights from St. Louis to Washington, D.C. under $200. A good price for a nonstop flight from St. Louis to Washington, D.C. is less than $243.

  • Are there last-minute flights available from St. Louis to Washington, D.C. for under $200?

    There are currently 15+ open flights from St. Louis to Washington, D.C. within the next 7 days for less than $200.

  • What days are nonstop flights available from St. Louis to Washington, D.C.?

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

  • How popular is this St. Louis to Washington, D.C. flight route?

  • How many flights depart from St. Louis to Washington, D.C. on average per day?

    8 flight departures from St. Louis to Washington, D.C. per day on average.
    Early Morning (Midnight to 6am) - 25% of flight departures
    Morning (6am - Noon) - 38% of flight departures
    Afternoon (Noon - 6pm) - 13% of flight departures
    Evening (6pm - Midnight) - 25% of flight departures

  • How long is the flight from St. Louis to Washington, D.C.?

    There are many flights that can get you from St. Louis to Washington, D.C. in 1h 56m. Fly via Frontier, American Airlines, or Delta to get the fastest option. There are 739 mi between St. Louis and Washington, D.C.. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from St. Louis to Washington, D.C. round-trip?

    Flying on Frontier is currently your cheapest option to Washington, D.C., with prices starting at $116. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $131 and $196, respectively. Frontier is 57% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Washington, D.C. one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $53. Users have also found prices from $79 and $90 on American Airlines and Spirit Airlines, respectively.

  • What are the most popular routes from St. Louis to Washington, D.C.?

  • What are the cheapest flights from St. Louis to Washington, D.C.?

    While on average a flight from St. Louis to Washington, D.C. is generally $297, our data shows the cheapest flight currently is $94. When looking at the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl), you can expect to pay $118 for that flight.

  • What does STL to BWI mean?

    STL and BWI 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. STL to BWI refers to a flight route from Lambert-St Louis Airport to Baltimore/Washington Airport. Washington, D.C. Dulles Intl Airport (IAD), Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from St. Louis to Washington, D.C. that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Washington, D.C. 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 St. Louis to Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Washington, D.C. 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 St. Louis to Washington, D.C. that include hotel bookings?

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

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

    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, D.C..

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

    Yes. Cheapflights offers flight deals from St. Louis to Washington, D.C. 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 St. Louis to Washington, D.C. that allow pets onboard?

    Many airlines flying from St. Louis to Washington, D.C. 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 St. Louis to Washington, D.C.?

    Yes, you can often find last-minute deals on St. Louis to Washington, D.C. 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 St. Louis to Washington, D.C. flight deals updated?

    The St. Louis to Washington, D.C. flight deals you see on this page were last updated on 10/31.

  • What is the cheapest month to book a flight from St. Louis to Washington, D.C.?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Washington, D.C. (average of $241). Flying from St. Louis to Washington, D.C. in January is currently the most expensive (average of $273). 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.

See more FAQs

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Top 6 airlines flying from St. Louis to Washington, D.C.

Discover the top 6 airlines that operate flights from St. Louis to Washington, D.C.. 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 2,570,725 searches. Data last updated October 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$175FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$129Average$313FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$158Average$231FlexibilityNo cancel feeOn-time65%
DeltaCheapest$177Average$317FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$180Average$316FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$208Average$412FlexibilityNo cancel feeOn-time69%
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