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Cheap flights from St. Louis to Washington, D.C. Reagan-National Airport from $60

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Washington, D.C. Reagan-National Airport departing on 12/17. 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 St. Louis to Washington, D.C.

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Washington, D.C. 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 St. Louis to Washington, D.C..

Cheap last minute flights

Planning a quick getaway from St. Louis to Washington, D.C.? 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 Washington, D.C., so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Washington, D.C.

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

All round-trip flight deals to Washington, D.C.

The cheapest plane tickets to Washington, D.C. found on KAYAK recently.
6:46 pm - 12:01 pmSTL-DCA
16h 15m1 stop
7:00 am - 8:13 amDCA-STL
26h 13m1 stop
$118Frontier
Find Deal
Sat, Dec 7 - Tue, Dec 10
7:09 pm - 12:06 pmSTL-DCA
15h 57m1 stop
1:01 pm - 9:16 amDCA-STL
21h 15m1 stop
$128Frontier
Find Deal
Mon, Jan 20 - Fri, Jan 24
6:10 pm - 9:25 amSTL-DCA
14h 15m1 stop
3:00 pm - 4:30 pmDCA-STL
2h 30mnonstop
$176Southwest
Find Deal
Mon, Jan 27 - Tue, Jan 28
11:15 am - 10:55 pmSTL-DCA
10h 40m1 stop
6:55 am - 5:25 pmDCA-STL
11h 30m1 stop
$186Southwest
Find Deal
Mon, Jan 27 - Tue, Jan 28
6:16 am - 9:19 amSTL-DCA
2h 03mnonstop
8:06 pm - 9:48 pmDCA-STL
2h 42mnonstop
$229American Airlines
Find Deal
Sat, Dec 14 - Sat, Jan 4
6:15 am - 9:19 amSTL-DCA
2h 04mnonstop
8:15 am - 9:56 amDCA-STL
2h 41mnonstop
$230American Airlines
Find Deal
Fri, Dec 20 - Mon, Dec 30
5:30 pm - 11:59 pmSTL-DCA
5h 29m1 stop
6:00 am - 10:47 amDCA-STL
5h 47m1 stop
$244United Airlines
Find Deal
Thu, Feb 6 - Fri, Feb 7
12:00 pm - 4:45 pmSTL-DCA
3h 45m1 stop
6:00 am - 11:20 amDCA-STL
6h 20m1 stop
$248Delta
Find Deal
Tue, Mar 4 - Wed, Mar 19
5:50 pm - 11:23 pmSTL-DCA
4h 33m1 stop
6:00 am - 9:54 amDCA-STL
4h 54m1 stop
$249Delta
Find Deal
Fri, Jan 24 - Sat, Jan 25
3:15 pm - 10:16 pmSTL-DCA
6h 01m1 stop
8:45 am - 12:20 pmDCA-STL
4h 35m1 stop
$260United Airlines
Find Deal
Fri, Apr 18 - Mon, Apr 21
9:46 pm - 12:08 pmSTL-DCA
13h 22m1 stop
$60Frontier
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Tue, Dec 17
6:46 pm - 12:01 pmSTL-DCA
16h 15m1 stop
$65Frontier
Find Deal
Sat, Jan 11
6:15 am - 9:19 amSTL-DCA
2h 04mnonstop
$115American Airlines
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Mon, Dec 23
5:55 pm - 10:57 pmSTL-DCA
4h 02m1 stop
$124Delta
Find Deal
Tue, Dec 24
6:04 am - 9:19 amSTL-DCA
2h 15mnonstop
$129American Airlines
Find Deal
Sun, Mar 2
5:33 pm - 11:57 pmSTL-DCA
5h 24m1 stop
$136United Airlines
Find Deal
Sat, Mar 15
7:05 pm - 10:00 pmSTL-DCA
1h 55mnonstop
$139Southwest
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Sun, Dec 22
5:33 pm - 11:57 pmSTL-DCA
5h 24m1 stop
$144United Airlines
Find Deal
Sat, Mar 8
3:40 pm - 10:53 pmSTL-DCA
6h 13m1 stop
$149Delta
Find Deal
Fri, Mar 21
11:05 am - 8:15 pmSTL-DCA
8h 10m2 stops
$153Southwest
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Tue, Jan 7
1:34 pm - 12:06 pmSTL-DCA
21h 32m1 stop
6:00 pm - 12:06 amDCA-STL
7h 06m1 stop
$358Frontier
Find Deal
Sun, Nov 24 - Mon, Nov 25
5:38 pm - 12:06 pmSTL-DCA
17h 28m1 stop
1:00 pm - 12:06 amDCA-STL
12h 06m1 stop
$388Frontier
Find Deal
Fri, Nov 22 - Tue, Nov 26
6:17 pm - 9:23 pmSTL-DCA
2h 06mnonstop
7:58 am - 9:29 amDCA-STL
2h 31mnonstop
$569American Airlines
Find Deal
Tue, Nov 26 - Sun, Dec 1
5:00 am - 12:27 pmSTL-DCA
6h 27m1 stop
7:58 am - 9:29 amDCA-STL
2h 31mnonstop
$579American Airlines
Find Deal
Tue, Nov 26 - Sun, Dec 1
11:25 am - 2:25 pmSTL-DCA
2h 00mnonstop
8:55 am - 10:25 amDCA-STL
2h 30mnonstop
$580Southwest
Find Deal
Sat, Nov 23 - Thu, Nov 28
5:40 pm - 10:35 pmSTL-DCA
3h 55m1 stop
3:00 pm - 4:20 pmDCA-STL
2h 20mnonstop
$585Southwest
Find Deal
Mon, Nov 25 - Mon, Dec 2
6:30 am - 11:54 amSTL-DCA
4h 24m1 stop
3:30 pm - 7:51 pmDCA-STL
5h 21m1 stop
$653United Airlines
Find Deal
Fri, Nov 22 - Fri, Nov 22
1:09 pm - 8:31 pmSTL-DCA
6h 22m1 stop
1:35 pm - 4:33 pmDCA-STL
3h 58m1 stop
$658Delta
Find Deal
Fri, Nov 22 - Sat, Nov 23
8:05 am - 5:33 pmSTL-DCA
8h 28m2 stops
6:08 pm - 11:28 pmDCA-STL
6h 20m1 stop
$906United Airlines
Find Deal
Mon, Nov 25 - Mon, Dec 2
5:18 pm - 10:57 pmSTL-DCA
4h 39m1 stop
8:30 am - 5:15 pmDCA-STL
9h 45m2 stops
$1,096Delta
Find Deal
Sat, Nov 23 - Thu, Nov 28
1:05 pm - 4:00 pmSTL-DCA
1h 55mnonstop
8:00 am - 9:25 amDCA-STL
2h 25mnonstop
$228Southwest
Find Deal
Mon, Jan 27 - Tue, Jan 28
6:15 am - 9:19 amSTL-DCA
2h 04mnonstop
8:10 pm - 9:45 pmDCA-STL
2h 35mnonstop
$229American Airlines
Find Deal
Fri, Dec 20 - Sun, Dec 29
6:16 pm - 9:30 pmSTL-DCA
2h 14mnonstop
6:45 am - 8:20 amDCA-STL
2h 35mnonstop
$243American Airlines
Find Deal
Wed, Mar 5 - Fri, Mar 7
6:04 am - 9:19 amSTL-DCA
2h 15mnonstop
4:12 pm - 5:45 pmDCA-STL
2h 33mnonstop
$249American Airlines
Find Deal
Sat, Feb 15 - Sun, Feb 23
6:21 am - 9:19 amSTL-DCA
1h 58mnonstop
7:44 am - 9:21 amDCA-STL
2h 37mnonstop
$299American Airlines
Find Deal
Thu, Dec 5 - Thu, Dec 12
6:15 am - 9:19 amSTL-DCA
2h 04mnonstop
8:06 pm - 9:48 pmDCA-STL
2h 42mnonstop
$302American Airlines
Find Deal
Sun, Dec 22 - Sat, Dec 28
6:25 am - 9:29 amSTL-DCA
2h 04mnonstop
7:45 pm - 9:23 pmDCA-STL
2h 38mnonstop
$308American Airlines
Find Deal
Wed, Mar 19 - Mon, Mar 24
6:00 am - 9:20 amSTL-DCA
2h 20mnonstop
6:19 pm - 7:57 pmDCA-STL
2h 38mnonstop
$318American Airlines
Find Deal
Sun, Jan 19 - Sat, Jan 25
6:15 am - 9:19 amSTL-DCA
2h 04mnonstop
8:10 pm - 9:45 pmDCA-STL
2h 35mnonstop
$347American Airlines
Find Deal
Sun, Dec 22 - Thu, Dec 26
8:30 am - 11:25 amSTL-DCA
1h 55mnonstop
6:35 pm - 8:00 pmDCA-STL
2h 25mnonstop
$406Southwest
Find Deal
Fri, Dec 20 - Sun, Dec 22

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

Our best Frontier deals on St. Louis to Washington, D.C. Reagan-National Airport flight tickets
Frontier
Dec 7
STL6:46 pmLambert-St Louis
16h 15m
1 stop
DCA12:01 pmWashington, D.C. Reagan-National
Dec 10
DCA7:00 amWashington, D.C. Reagan-National
26h 13m
1 stop
STL8:13 amLambert-St Louis
Frontier
Jan 20
STL7:09 pmLambert-St Louis
15h 57m
1 stop
DCA12:06 pmWashington, D.C. Reagan-National
Jan 24
DCA1:01 pmWashington, D.C. Reagan-National
21h 15m
1 stop
STL9:16 amLambert-St Louis
Frontier
Dec 6
STL6:46 pmLambert-St Louis
16h 15m
1 stop
DCA12:01 pmWashington, D.C. Reagan-National
Dec 8
DCA7:00 amWashington, D.C. Reagan-National
26h 13m
1 stop
STL8:13 amLambert-St Louis

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

Our best Southwest deals on St. Louis to Washington, D.C. Reagan-National Airport flight tickets
Southwest
Jan 27
STL6:10 pmLambert-St Louis
14h 15m
1 stop
DCA9:25 amWashington, D.C. Reagan-National
Jan 28
DCA3:00 pmWashington, D.C. Reagan-National
2h 30m
STL4:30 pmLambert-St Louis
Southwest
Jan 27
STL11:15 amLambert-St Louis
10h 40m
1 stop
DCA10:55 pmWashington, D.C. Reagan-National
Jan 28
DCA6:55 amWashington, D.C. Reagan-National
11h 30m
1 stop
STL5:25 pmLambert-St Louis
Southwest
Jan 27
STL6:10 pmLambert-St Louis
14h 15m
1 stop
DCA9:25 amWashington, D.C. Reagan-National
Jan 28
DCA1:35 pmWashington, D.C. Reagan-National
9h 45m
2 stops
STL10:20 pmLambert-St Louis

See travel insights to Washington, D.C. from

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

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 Washington, D.C. Reagan-National Airport?

The month of February is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from St. Louis, with most prices found around $258. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $268.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from St. Louis to Washington, D.C. Reagan-National Airport is on a Wednesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Wednesday will often find tickets for as low as $249. Flights from St. Louis to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $360. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest St. Louis to Washington, D.C. Reagan-National Airport flights are usually those with departure times at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $263. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the afternoon when prices are around $283.

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

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

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

Most flyers found that booking tickets 37 days in advance of their planned departure date is the best time to get cheap flights to Washington, D.C. Reagan-National Airport. During this timeframe, flight prices are around $283. In the past 72 hours, momondo users found flights from St. Louis to Washington, D.C. Reagan-National Airport for as low as $207.

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

There are 2 cabin classes available to choose from on Lambert-St Louis to Washington, D.C. Reagan-National 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 St. Louis to Washington, D.C. Reagan-National Airport flights?

You could potentially save up to 47% on your flight if you consider stops on a St. Louis to Washington, D.C. Reagan-National Airport flight.

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

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

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

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

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

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

Best Price Found

$60

Fastest flight time

1h 50m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from St. Louis in the past 72 hours is $60. The best round-trip flight deal from St. Louis to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $118.
The fastest flight from St. Louis to Washington, D.C. Reagan-National Airport takes 1h 50m
Direct flights go from St. Louis to Washington, D.C. Reagan-National Airport every day.

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

    Washington, D.C. Reagan-National is 708.3 mi away from Lambert-St Louis. In terms of flight time, this usually takes a little over 1h 50m.

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

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

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

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

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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


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

Compare and see reviews for airlines that fly from St. Louis to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $181Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $190Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
United AirlinesPriceFrom $222Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
  • Southwest Flights From St. Louis to Washington, D.C. Reagan-National Airport

    The lowest priced Southwest flight from St. Louis to Washington, D.C. Reagan-National Airport from the last 72 hours was $190. Generally, Southwest has 23 flights on this route every week with an average price of $288. Southwest is rated 8.1/10 by our users.

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

    The best American Airlines deal for St. Louis to Washington, D.C. Reagan-National Airport flight tickets found on momondo in the last 72 hours was $181, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $277 round-trip. American Airlines operates 17 flights out of St. Louis into Washington, D.C. Reagan-National Airport in an average week, so prices vary by time and availability. 10,000 American Airlines reviews by users on momondo have scored the airline at 7.2/10.


Why use momondo?

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

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

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from St. Louis.

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

Price alerts on flights to Washington, D.C. from St. Louis 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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