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Cheap flights from Washington, D.C. to St. Louis from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to St. Louis departing on 4/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap Washington, D.C. to St. Louis (WAS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to St. Louis

Best Price Found

$55

Fastest flight time

2h 07m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Washington, D.C. in the past 72 hours is $55. The best round-trip flight deal from Washington, D.C. to St. Louis found on momondo in the last 72 hours is $98.
The fastest flight from Washington, D.C. to St. Louis takes 2h 07m
Direct flights go from Washington, D.C. to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

How to get the cheapest flight ticket from Washington, D.C. to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

February. The cheapest time of year to fly to St. Louis from Washington, D.C. is February. Most expensive is June

What is the cheapest day to depart Washington, D.C. for St. Louis?

Thursday. The cheapest day of the week is typically Thursday. The most expensive is typically Monday

When is the cheapest time to fly from Washington, D.C. to St. Louis?

At noon. Washington, D.C. to St. Louis flights are approximately 14% more expensive in the afternoon than at noon

What is the cheapest airline that flies to St. Louis from Washington, D.C.?

Spirit Airlines. American Airlines, Delta, and Frontier are the most popular carriers operating from Washington, D.C. to St. Louis

What is the cheapest Washington, D.C. to St. Louis flight route?

Baltimore/Washington - Lambert-St Louis. Fly from Baltimore/Washington to Lambert-St Louis for the best Washington, D.C. - St. Louis flight prices

How far in advance should you book Washington, D.C. to St. Louis flights?

50 days before. The cheapest time to buy a flight from Washington, D.C. to St. Louis is approximately 50 days to departure

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

As of March 2024, 11 flights take off from Washington, D.C. and land in St. Louis each day. The most common flight departure time for this route is 7:00AM, with 42% of daily flights taking off in the afternoon.

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

As of March 2024, there are 83 flights per week flying from Washington, D.C. to St. Louis. The most common day of the week flights depart is Sunday, with 14% of flights taking off on this day.

Can stopping save me money on Washington, D.C. to St. Louis flights?

You could potentially save up to 37% on your flight if you consider stops on a Washington, D.C. to St. Louis flight.

When you’re planning your trip from Washington, D.C. to St. Louis, the most popular airport-to-airport route is Washington, D.C. Dulles Intl Airport to Lambert-St Louis Airport. If you are looking for alternate airports to fly out of when traveling to St. Louis, you can try Washington, D.C. Reagan-National Airport or Baltimore/Washington Airport which are located in Washington, D.C. and Baltimore respectively. If you are looking for alternate airports to fly into when traveling from Washington, D.C., you can try Springfield Capital Airport or Marion Williamson County Airport which are located in Springfield and Marion respectively. The cheapest route from Washington, D.C. to St. Louis is BWI — STL with an average price of $117 RT during the month of March.

Washington, D.C. Reagan-National Airport (DCA) to Lambert-St Louis Airport (STL)$137
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Washington, D.C. Dulles Intl Airport (IAD) to Lambert-St Louis Airport (STL)$176
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Baltimore/Washington Airport (BWI) to Lambert-St Louis Airport (STL)$117
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Washington, D.C. Reagan-National Airport (DCA) to Springfield Capital Airport (SPI)$238
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Washington, D.C. Dulles Intl Airport (IAD) to Springfield Capital Airport (SPI)$481
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Baltimore/Washington Airport (BWI) to Springfield Capital Airport (SPI)$154
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Easily compare round-trip flights from Washington, D.C. to St. Louis

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Washington, D.C. to St. Louis by changing tabs
Frontier
Apr 30
DCA7:00 amWashington, D.C. Reagan-National
9h 50m
1 stop
STL3:50 pmLambert-St Louis
May 2
STL11:38 amLambert-St Louis
9h 21m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
American Airlines
Apr 23
DCA7:51 pmWashington, D.C. Reagan-National
2h 25m
STL9:16 pmLambert-St Louis
Apr 30
STL6:20 amLambert-St Louis
2h 01m
DCA9:21 amWashington, D.C. Reagan-National
Multiple Airlines
May 17
BWI10:12 pmBaltimore/Washington
19h 13m
1 stop
STL4:25 pmLambert-St Louis
May 20
STL9:20 pmLambert-St Louis
10h 06m
1 stop
BWI8:26 amBaltimore/Washington
Spirit Airlines
Apr 23
BWI6:35 amBaltimore/Washington
8h 09m
1 stop
STL1:44 pmLambert-St Louis
Apr 27
STL11:39 amLambert-St Louis
12h 13m
1 stop
BWI12:52 amBaltimore/Washington
Delta
May 18
IAD6:00 amWashington, D.C. Dulles Intl
4h 19m
1 stop
STL9:19 amLambert-St Louis
May 21
STL6:12 pmLambert-St Louis
3h 40m
1 stop
IAD10:52 pmWashington, D.C. Dulles Intl
Frontier
Apr 23
BWI9:17 pmBaltimore/Washington
24h 36m
1 stop
STL8:53 pmLambert-St Louis
Apr 30
STL7:16 pmLambert-St Louis
18h 40m
1 stop
BWI2:56 pmBaltimore/Washington

Find the cheapest one-way flights from Washington, D.C. to St. Louis

If you're looking for one-way flights from Washington, D.C. to St. Louis, view some of our deals below provided by American Airlines, Delta and Frontier
Frontier
Apr 25
BWI9:17 pmBaltimore/Washington
10h 56m
1 stop
STL7:13 amLambert-St Louis
Delta
Apr 27
IAD5:55 pmWashington, D.C. Dulles Intl
5h 05m
1 stop
STL10:00 pmLambert-St Louis
American Airlines
May 3
DCA7:50 pmWashington, D.C. Reagan-National
2h 25m
STL9:15 pmLambert-St Louis

Search last-minute flights to St. Louis from Washington, D.C.

Find and compare round-trip flight prices for your last-minute flight from Washington, D.C. to St. Louis
Frontier
Apr 4
DCA12:59 pmWashington, D.C. Reagan-National
10h 16m
1 stop
STL10:15 pmLambert-St Louis
Apr 11
STL11:18 amLambert-St Louis
9h 41m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Multiple Airlines
Apr 4
BWI10:40 amBaltimore/Washington
9h 10m
1 stop
STL6:50 pmLambert-St Louis
Apr 9
STL8:24 pmLambert-St Louis
17h 32m
1 stop
BWI2:56 pmBaltimore/Washington
Spirit Airlines
Apr 4
BWI10:21 amBaltimore/Washington
9h 29m
1 stop
STL6:50 pmLambert-St Louis
Apr 9
STL2:25 pmLambert-St Louis
8h 53m
1 stop
BWI12:18 amBaltimore/Washington
American Airlines
Apr 6
IAD9:34 amWashington, D.C. Dulles Intl
7h 15m
1 stop
STL3:49 pmLambert-St Louis
Apr 13
STL1:11 pmLambert-St Louis
5h 31m
1 stop
IAD7:42 pmWashington, D.C. Dulles Intl
Multiple Airlines
Apr 8
BWI5:02 pmBaltimore/Washington
16h 19m
1 stop
STL8:21 amLambert-St Louis
Apr 9
STL2:25 pmLambert-St Louis
17h 13m
1 stop
BWI8:38 amBaltimore/Washington
Delta
Apr 4
IAD12:38 pmWashington, D.C. Dulles Intl
6h 26m
1 stop
STL6:04 pmLambert-St Louis
Apr 11
STL6:04 amLambert-St Louis
4h 30m
1 stop
IAD11:34 amWashington, D.C. Dulles Intl

Best airlines flying from Washington, D.C. to St. Louis

Compare and see reviews for airlines that fly from Washington, D.C. to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $98Free CancellationRating
6.3
4,257 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $101Free CancellationRating
6.4
8,843 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $173Free CancellationRating
7.4
11,470 reviews
Search United Airlines flights
American AirlinesPriceFrom $178Free CancellationRating
7.3
15,181 reviews
Search American Airlines flights
DeltaPriceFrom $191Free CancellationRating
8.0
11,402 reviews
Search Delta flights
  • Southwest Flights From Washington, D.C. to St. Louis

    Southwest operates around 27 flights from Washington, D.C. to St. Louis every week. The average price of these flights found in the last 72 hours has been $431, but momondo users have found Southwest deals from Washington, D.C. to St. Louis from as low as $326 round-trip. Southwest has been scored 8.2/10 in 6,327 reviews.

  • United Airlines Flights From Washington, D.C. to St. Louis

    United Airlines (7.4/10 from 11,470 reviews) operates around 14 flights from Washington, D.C. to St. Louis in any given week. The average United Airlines airfare for this route is around $401, with deals from around $173 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. to St. Louis flight searches in the last 72 hours.


Frontier flights from Washington, D.C. to St. Louis

Our best Frontier deals on Washington, D.C. to St. Louis flight tickets
Frontier
Apr 30
DCA7:00 amWashington, D.C. Reagan-National
9h 50m
1 stop
STL3:50 pmLambert-St Louis
May 2
STL11:38 amLambert-St Louis
9h 21m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Frontier
Apr 23
BWI9:17 pmBaltimore/Washington
24h 36m
1 stop
STL8:53 pmLambert-St Louis
Apr 30
STL7:16 pmLambert-St Louis
18h 40m
1 stop
BWI2:56 pmBaltimore/Washington
Frontier
Apr 22
BWI8:08 amBaltimore/Washington
24h 05m
1 stop
STL7:13 amLambert-St Louis
Apr 24
STL9:53 pmLambert-St Louis
21h 34m
1 stop
BWI8:27 pmBaltimore/Washington

American Airlines flights from Washington, D.C. to St. Louis

Our best American Airlines deals on Washington, D.C. to St. Louis flight tickets
American Airlines
Apr 23
DCA7:51 pmWashington, D.C. Reagan-National
2h 25m
STL9:16 pmLambert-St Louis
Apr 30
STL6:20 amLambert-St Louis
2h 01m
DCA9:21 amWashington, D.C. Reagan-National
American Airlines
May 6
DCA7:45 pmWashington, D.C. Reagan-National
2h 15m
STL9:00 pmLambert-St Louis
May 7
STL5:04 pmLambert-St Louis
1h 56m
DCA8:00 pmWashington, D.C. Reagan-National
American Airlines
Apr 22
DCA7:51 pmWashington, D.C. Reagan-National
2h 25m
STL9:16 pmLambert-St Louis
Apr 27
STL6:20 amLambert-St Louis
2h 01m
DCA9:21 amWashington, D.C. Reagan-National

  • How far is Washington, D.C. to Lambert-St Louis by plane?

    There are 708.3 mi between Washington, D.C. and Lambert-St Louis. 2h 07m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Lambert-St Louis Airport?

    Prices for flights from Washington, D.C. to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Washington, D.C. to Lambert-St Louis Airport?

  • How old do you have to be to fly from Washington, D.C. to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Alternative routes for Washington, D.C. to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Washington, D.C. to Kansas City Flights
Fastest flight time2h 49m
Cheapest price$196
Washington, D.C. to Springfield Flights
Fastest flight time4h 49m
Cheapest price$228
Washington, D.C. to Columbia, Missouri Flights
Fastest flight time6h 15m
Cheapest price$421
Washington, D.C. to Joplin Flights
Fastest flight time8h 54m
Cheapest price$412
Washington, D.C. to Branson Flights
Fastest flight time8h 15m
Cheapest price$301
Washington, D.C. to Fort Leonard Wood Flights
Fastest flight time20h 39m
Cheapest price$527
Washington, D.C. to Kirksville Flights
Fastest flight time6h 40m
Cheapest price$387

Similar Washington, D.C. to St. Louis flights

Flexible with your destination? Broaden your search and find flights similar to your Washington, D.C. to St. Louis route

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Washington, D.C..

Can I find flights from Washington, D.C. to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to St. Louis?

momondo helps you find the best flight between Washington, D.C. and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Washington, D.C. and alert you when they change.


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