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Cheap flights from Washington, D.C. Reagan-National Airport to St. Louis from $62

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. Reagan-National Airport to St. Louis departing on 1/14. 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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Find the cheapest flights from Washington, D.C. Reagan-National Airport to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Washington, D.C. Reagan-National Airport to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Washington, D.C. Reagan-National Airport to St. Louis.

Cheap last minute flights

Planning a quick getaway from Washington, D.C. Reagan-National Airport to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Washington, D.C. Reagan-National Airport to St. Louis

Find recent round-trip train or bus tickets from Washington, D.C. Reagan-National Airport to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
7:00 am - 9:16 amDCA-STL
27h 16m1 stop
7:09 pm - 9:59 pmSTL-DCA
25h 50m1 stop
$118Frontier
Find Deal
Tue, Jan 28 - Wed, Jan 29
7:00 am - 8:13 amDCA-STL
26h 13m1 stop
6:46 pm - 12:01 pmSTL-DCA
16h 15m1 stop
$138Frontier
Find Deal
Tue, Dec 10 - Wed, Dec 11
7:44 am - 9:21 amDCA-STL
2h 37mnonstop
9:51 am - 12:59 pmSTL-DCA
2h 08mnonstop
$229American Airlines
Find Deal
Thu, Dec 12 - Tue, Dec 17
4:05 pm - 7:25 pmDCA-STL
4h 20m1 stop
8:45 am - 11:40 amSTL-DCA
1h 55mnonstop
$239Southwest
Find Deal
Sun, Feb 16 - Fri, Feb 21
6:00 am - 9:36 amDCA-STL
4h 36m1 stop
2:00 pm - 7:33 pmSTL-DCA
4h 33m1 stop
$248Delta
Find Deal
Thu, Jan 16 - Thu, Jan 16
8:00 am - 9:25 amDCA-STL
2h 25mnonstop
1:05 pm - 4:00 pmSTL-DCA
1h 55mnonstop
$249Southwest
Find Deal
Thu, Jan 16 - Thu, Jan 16
7:44 am - 9:21 amDCA-STL
2h 37mnonstop
5:40 pm - 11:20 pmSTL-DCA
4h 40m1 stop
$253American Airlines
Find Deal
Thu, Dec 12 - Tue, Dec 17
6:00 am - 10:59 amDCA-STL
5h 59m1 stop
5:40 pm - 10:43 pmSTL-DCA
4h 03m1 stop
$260United Airlines
Find Deal
Sat, Dec 14 - Sun, Dec 15
1:00 pm - 6:47 pmDCA-STL
6h 47m1 stop
5:55 pm - 10:57 pmSTL-DCA
4h 02m1 stop
$317Delta
Find Deal
Tue, Dec 24 - Tue, Dec 31
5:05 pm - 9:45 pmDCA-STL
5h 40m1 stop
5:30 pm - 10:47 pmSTL-DCA
4h 17m1 stop
$318United Airlines
Find Deal
Fri, Jan 17 - Sun, Jan 19
7:00 am - 9:06 amDCA-STL
27h 06m1 stop
$62Frontier
Find Deal
Tue, Jan 14
7:00 am - 9:16 amDCA-STL
27h 16m1 stop
$65Frontier
Find Deal
Tue, Jan 28
8:15 am - 9:56 amDCA-STL
2h 41mnonstop
$115American Airlines
Find Deal
Sun, Jan 5
6:30 am - 10:47 amDCA-STL
5h 17m1 stop
$124United Airlines
Find Deal
Wed, Dec 25
7:45 am - 12:12 pmDCA-STL
5h 27m1 stop
$136United Airlines
Find Deal
Sun, Mar 16
6:00 am - 9:43 amDCA-STL
4h 43m1 stop
$138Delta
Find Deal
Sun, Mar 16
6:35 pm - 7:55 pmDCA-STL
2h 20mnonstop
$139Southwest
Find Deal
Mon, Mar 17
12:45 pm - 7:45 pmDCA-STL
8h 00m2 stops
$143Southwest
Find Deal
Sat, Jan 18
5:59 am - 9:36 amDCA-STL
4h 37m1 stop
$148American Airlines
Find Deal
Thu, Dec 26
1:00 pm - 6:47 pmDCA-STL
6h 47m1 stop
$149Delta
Find Deal
Tue, Dec 24
1:00 pm - 12:06 amDCA-STL
12h 06m1 stop
9:34 am - 9:58 pmSTL-DCA
11h 24m1 stop
$327Frontier
Find Deal
Tue, Nov 26 - Wed, Nov 27
7:00 am - 12:06 amDCA-STL
18h 06m1 stop
5:38 pm - 12:06 pmSTL-DCA
17h 28m1 stop
$328Frontier
Find Deal
Sun, Nov 24 - Mon, Nov 25
9:49 am - 1:15 pmDCA-STL
4h 26m1 stop
6:30 am - 12:00 pmSTL-DCA
4h 30m1 stop
$538Delta
Find Deal
Tue, Nov 26 - Thu, Nov 28
6:00 am - 9:36 amDCA-STL
4h 36m1 stop
5:18 pm - 10:57 pmSTL-DCA
4h 39m1 stop
$578Delta
Find Deal
Tue, Nov 26 - Fri, Nov 29
12:00 pm - 1:20 pmDCA-STL
2h 20mnonstop
7:05 pm - 10:00 pmSTL-DCA
1h 55mnonstop
$580Southwest
Find Deal
Mon, Nov 25 - Wed, Nov 27
4:00 pm - 7:55 pmDCA-STL
4h 55m1 stop
8:50 am - 11:45 amSTL-DCA
1h 55mnonstop
$585Southwest
Find Deal
Tue, Nov 26 - Fri, Nov 29
7:58 am - 9:29 amDCA-STL
2h 31mnonstop
2:17 pm - 8:39 pmSTL-DCA
5h 22m1 stop
$624American Airlines
Find Deal
Mon, Nov 25 - Fri, Nov 29
3:36 pm - 5:07 pmDCA-STL
2h 31mnonstop
5:00 am - 10:59 amSTL-DCA
4h 59m1 stop
$629American Airlines
Find Deal
Mon, Nov 25 - Sat, Nov 30
11:05 am - 3:58 pmDCA-STL
5h 53m1 stop
8:05 am - 1:16 pmSTL-DCA
4h 11m1 stop
$633United Airlines
Find Deal
Tue, Nov 26 - Fri, Nov 29
6:00 pm - 9:36 pmDCA-STL
4h 36m1 stop
6:30 am - 11:54 amSTL-DCA
4h 24m1 stop
$763United Airlines
Find Deal
Sun, Nov 24 - Fri, Nov 29
8:04 pm - 9:53 pmDCA-STL
2h 49mnonstop
9:51 am - 12:59 pmSTL-DCA
2h 08mnonstop
$229American Airlines
Find Deal
Thu, Dec 12 - Tue, Dec 17
7:45 pm - 9:10 pmDCA-STL
2h 25mnonstop
8:53 am - 11:59 amSTL-DCA
2h 06mnonstop
$249American Airlines
Find Deal
Sat, Apr 12 - Sat, Apr 19
7:44 am - 9:21 amDCA-STL
2h 37mnonstop
6:10 am - 9:18 amSTL-DCA
2h 08mnonstop
$253American Airlines
Find Deal
Fri, Dec 13 - Mon, Dec 16
2:54 pm - 4:32 pmDCA-STL
2h 38mnonstop
6:28 am - 9:29 amSTL-DCA
2h 01mnonstop
$273American Airlines
Find Deal
Thu, Apr 10 - Sun, Apr 13
6:45 am - 8:20 amDCA-STL
2h 35mnonstop
6:25 am - 9:29 amSTL-DCA
2h 04mnonstop
$279American Airlines
Find Deal
Thu, Mar 20 - Sat, Mar 22
7:44 am - 9:21 amDCA-STL
2h 37mnonstop
6:10 am - 9:18 amSTL-DCA
2h 08mnonstop
$288American Airlines
Find Deal
Fri, Dec 13 - Mon, Dec 16
7:44 am - 9:21 amDCA-STL
2h 37mnonstop
6:10 am - 9:18 amSTL-DCA
2h 08mnonstop
$299American Airlines
Find Deal
Tue, Dec 10 - Fri, Dec 13
10:04 pm - 11:53 pmDCA-STL
2h 49mnonstop
10:54 am - 1:59 pmSTL-DCA
2h 05mnonstop
$304American Airlines
Find Deal
Fri, Jan 17 - Sun, Jan 19
3:20 pm - 4:45 pmDCA-STL
2h 25mnonstop
7:05 pm - 10:00 pmSTL-DCA
1h 55mnonstop
$365Southwest
Find Deal
Wed, Dec 4 - Wed, Dec 4
8:15 am - 9:50 amDCA-STL
2h 35mnonstop
7:55 pm - 10:50 pmSTL-DCA
1h 55mnonstop
$397Southwest
Find Deal
Fri, Dec 13 - Sun, Dec 15

Frontier flights from Washington, D.C. Reagan-National Airport to St. Louis

Our best Frontier deals on Washington, D.C. Reagan-National Airport to St. Louis flight tickets
Frontier
Jan 28
DCA7:00 amWashington, D.C. Reagan-National
27h 16m
1 stop
STL9:16 amLambert-St Louis
Jan 29
STL7:09 pmLambert-St Louis
25h 50m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Frontier
Dec 10
DCA7:00 amWashington, D.C. Reagan-National
26h 13m
1 stop
STL8:13 amLambert-St Louis
Dec 11
STL6:46 pmLambert-St Louis
16h 15m
1 stop
DCA12:01 pmWashington, D.C. Reagan-National
Frontier
Dec 8
DCA7:00 amWashington, D.C. Reagan-National
26h 13m
1 stop
STL8:13 amLambert-St Louis
Dec 11
STL6:46 pmLambert-St Louis
16h 15m
1 stop
DCA12:01 pmWashington, D.C. Reagan-National

American Airlines flights from Washington, D.C. Reagan-National Airport to St. Louis

Our best American Airlines deals on Washington, D.C. Reagan-National Airport to St. Louis flight tickets
American Airlines
Dec 12
DCA7:44 amWashington, D.C. Reagan-National
2h 37m
STL9:21 amLambert-St Louis
Dec 17
STL9:51 amLambert-St Louis
2h 08m
DCA12:59 pmWashington, D.C. Reagan-National
American Airlines
Dec 12
DCA7:44 amWashington, D.C. Reagan-National
2h 37m
STL9:21 amLambert-St Louis
Dec 17
STL5:40 pmLambert-St Louis
4h 40m
1 stop
DCA11:20 pmWashington, D.C. Reagan-National
American Airlines
Dec 12
DCA8:04 pmWashington, D.C. Reagan-National
2h 49m
STL9:53 pmLambert-St Louis
Dec 14
STL5:05 amLambert-St Louis
4h 54m
1 stop
DCA10:59 amWashington, D.C. Reagan-National

See travel insights to St. Louis from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport 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 to St. Louis?

In general, January is the cheapest month to fly from Washington, D.C. Reagan-National Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $283. The month of August is another great option to travel to St. Louis, with average flight prices from Washington, D.C. Reagan-National Airport averaging around $289.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $308. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $356. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Washington, D.C. Reagan-National Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $295 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $353 per ticket.

What is the cheapest Washington, D.C. Reagan-National to Lambert-St Louis flight route?

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

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from Washington, D.C. Reagan-National Airport is 44 days out, which is when prices tend to be around $315. In the past 72 hours, momondo users found flights from Washington, D.C. Reagan-National Airport to St. Louis for as low as $209.

What cabin class options are available on Washington, D.C. Reagan-National to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Washington, D.C. Reagan-National to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 43% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to St. Louis flight.

How have Washington, D.C. Reagan-National Airport to St. Louis flight prices changed over time?

As of November 2024, prices for Washington, D.C. Reagan-National Airport to St. Louis flights are approximately 10% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Reagan-National Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Reagan-National Airport to St. Louis (DCA to STL) flight deals and tips

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

Best Price Found

$62

Fastest flight time

2h 20m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Washington, D.C. Reagan-National Airport in the past 72 hours is $62. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to St. Louis found on momondo in the last 72 hours is $118.
The fastest flight from Washington, D.C. Reagan-National Airport to St. Louis takes 2h 20m
Direct flights go from Washington, D.C. Reagan-National Airport to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    Washington, D.C. Reagan-National and Lambert-St Louis are 708.3 mi apart from one another. In terms of flight time, this usually takes a little over 2h 20m.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Lambert-St Louis Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Lambert-St Louis Airport.

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

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Washington, D.C. Reagan-National Airport to St. Louis?

  • What is the most popular airline from Washington, D.C. Reagan-National Airport to St. Louis?


Best airlines flying from Washington, D.C. Reagan-National Airport to St. Louis

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $175Free CancellationRating
8.0
8,755 reviews
Search Delta flights
American AirlinesPriceFrom $183Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $215Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
  • Southwest Flights From Washington, D.C. Reagan-National Airport to St. Louis

    Southwest flies from Washington, D.C. Reagan-National Airport to St. Louis around 21 times per week, with 5,005 momondo users rating the airline 8.1/10. The cheapest Southwest deal from Washington, D.C. Reagan-National Airport to St. Louis in the last 72 hours was $215 (round-trip), much lower than the average airfare cost of $344 for Southwest flights on this route.

  • American Airlines Flights From Washington, D.C. Reagan-National Airport to St. Louis

    American Airlines (7.2/10 from 10,000 reviews) operates around 18 flights from Washington, D.C. Reagan-National Airport to St. Louis in any given week. The average American Airlines airfare for this route is around $310, with deals from around $183 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. Reagan-National Airport to St. Louis flight searches in the last 72 hours.


Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Washington, D.C. with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to St. Louis.

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

Price alerts on flights to St. Louis from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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