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STL - WAS

$81 Find cheap flights from St. Louis to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Washington, D.C. departing on 9/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 7/1
Mon 7/8

Search hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 42,787,818 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Washington, D.C. (STL-WAS)

 
These are the cheapest deals for flights from St. Louis to Washington, D.C. currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from St. Louis to Washington, D.C.

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from St. Louis to Washington, D.C..

Recent one-way flight deals from St. Louis to Washington, D.C.

Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Washington, D.C. found on KAYAK recently.

Recent last minute flight deals from St. Louis to Washington, D.C.

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from St. Louis to Washington, D.C..

Recent direct flight deals from St. Louis to Washington, D.C.

The latest deals for direct flights from St. Louis to Washington, D.C. so you can sit back and relax without the need for a layover.

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
4:31 pm - 9:21 pmSTL-BWI
27h 50m1 stop
10:40 am - 10:14 pmBWI-STL
12h 34m1 stop
$140Spirit Airlines
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Wed, Sep 4 - Fri, Sep 13
8:02 pm - 12:39 pmSTL-BWI
15h 37m1 stop
3:25 pm - 7:02 amBWI-STL
16h 37m1 stop
$152Frontier
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Wed, Jun 12 - Thu, Aug 29
6:09 am - 9:11 amSTL-DCA
2h 02mnonstop
8:00 pm - 9:28 pmDCA-STL
2h 28mnonstop
$169American Airlines
Find Deal
Mon, Jul 1 - Wed, Jul 3
6:09 am - 9:11 amSTL-DCA
2h 02mnonstop
8:00 pm - 9:28 pmDCA-STL
2h 28mnonstop
$179American Airlines
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Wed, Jun 26 - Wed, Jul 3
5:25 pm - 11:46 pmSTL-DCA
5h 21m1 stop
2:45 pm - 8:29 pmDCA-STL
6h 44m1 stop
$188Delta
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Mon, Jul 1 - Fri, Jul 5
8:25 am - 11:33 amSTL-IAD
2h 08mnonstop
8:35 am - 9:56 amIAD-STL
2h 21mnonstop
$189United Airlines
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Sat, Aug 24 - Wed, Aug 28
5:20 pm - 12:15 amSTL-IAD
5h 55m1 stop
8:35 am - 9:56 amIAD-STL
2h 21mnonstop
$194United Airlines
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Sat, Aug 24 - Wed, Aug 28
3:10 pm - 10:30 pmSTL-DCA
6h 20m1 stop
9:00 am - 2:56 pmDCA-STL
6h 56m1 stop
$198Delta
Find Deal
Wed, Jun 26 - Mon, Jul 1
7:44 pm - 7:47 amSTL-BWI
11h 03m1 stop
6:45 am - 5:28 pmBWI-STL
11h 43m1 stop
Tue, Jun 25 - Sat, Jul 6
11:34 am - 1:24 amSTL-BWI
12h 50m1 stop
7:09 pm - 10:42 amBWI-STL
16h 33m2 stops
Sat, Jun 15 - Mon, Jun 17
11:39 am - 6:27 pmSTL-BWI
5h 48m1 stop
$81Spirit Airlines
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Sat, Sep 14
7:44 pm - 7:47 amSTL-BWI
11h 03m1 stop
$84Frontier
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Tue, Jun 11
6:09 am - 9:11 amSTL-DCA
2h 02mnonstop
$85American Airlines
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Mon, Jul 1
4:02 pm - 11:46 pmSTL-DCA
6h 44m1 stop
$94Delta
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Mon, Jul 1
11:25 am - 5:26 pmSTL-IAD
5h 01m1 stop
$94Delta
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Tue, Jul 2
5:49 pm - 8:49 pmSTL-DCA
2h 00mnonstop
$95American Airlines
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Tue, Jul 9
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
$95United Airlines
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Tue, Aug 6
8:25 am - 11:33 amSTL-IAD
2h 08mnonstop
$105United Airlines
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Sun, Aug 25
5:45 pm - 9:44 amSTL-IAD
14h 59m1 stop
$123Sun Country Air
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Sun, Jun 30
5:45 pm - 9:44 amSTL-IAD
14h 59m1 stop
$127Sun Country Air
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Sun, Jun 30
7:44 pm - 7:47 amSTL-BWI
11h 03m1 stop
7:09 pm - 10:42 amBWI-STL
16h 33m2 stops
$231Frontier
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Thu, Jun 6 - Mon, Jun 10
7:44 pm - 7:47 amSTL-BWI
11h 03m1 stop
7:09 pm - 10:42 amBWI-STL
16h 33m2 stops
$242Frontier
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Tue, Jun 4 - Wed, Jun 5
8:12 pm - 4:31 pmSTL-BWI
19h 19m2 stops
5:31 pm - 2:23 pmBWI-STL
21h 52m2 stops
$279Spirit Airlines
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Thu, Jun 6 - Mon, Jun 10
2:35 pm - 12:16 amSTL-BWI
8h 41m1 stop
6:30 am - 5:28 pmBWI-STL
35h 58m2 stops
$299Spirit Airlines
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Tue, Jun 4 - Wed, Jul 3
5:42 pm - 8:43 pmSTL-DCA
2h 01mnonstop
3:26 pm - 4:51 pmDCA-STL
2h 25mnonstop
$477American Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 19
5:42 pm - 8:43 pmSTL-DCA
2h 01mnonstop
11:30 am - 4:06 pmDCA-STL
5h 36m1 stop
$487American Airlines
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Wed, Jun 5 - Wed, Jun 19
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
8:24 am - 2:14 pmIAD-STL
6h 50m1 stop
$487United Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 19
6:12 pm - 10:53 pmSTL-IAD
3h 41m1 stop
6:00 am - 9:10 amIAD-STL
4h 10m1 stop
$496Delta
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Wed, Jun 5 - Wed, Jun 19
6:00 am - 2:09 pmSTL-IAD
7h 09m1 stop
7:20 pm - 11:43 pmIAD-STL
5h 23m1 stop
$498Delta
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Thu, Jun 6 - Mon, Jun 10
6:30 am - 11:46 amSTL-IAD
4h 16m1 stop
8:20 am - 9:32 amIAD-STL
2h 12mnonstop
$545United Airlines
Find Deal
Tue, Jun 4 - Sat, Jun 8
6:09 am - 9:11 amSTL-DCA
2h 02mnonstop
8:00 pm - 9:28 pmDCA-STL
2h 28mnonstop
$169American Airlines
Find Deal
Mon, Jul 1 - Wed, Jul 3
6:09 am - 9:11 amSTL-DCA
2h 02mnonstop
8:00 pm - 9:28 pmDCA-STL
2h 28mnonstop
$179American Airlines
Find Deal
Wed, Jun 26 - Wed, Jul 3
8:25 am - 11:33 amSTL-IAD
2h 08mnonstop
8:35 am - 9:56 amIAD-STL
2h 21mnonstop
$189United Airlines
Find Deal
Sat, Aug 24 - Wed, Aug 28
5:42 pm - 8:43 pmSTL-DCA
2h 01mnonstop
7:35 am - 8:56 amDCA-STL
2h 21mnonstop
$189American Airlines
Find Deal
Mon, Jul 1 - Fri, Jul 5
6:10 am - 9:11 amSTL-DCA
2h 01mnonstop
8:00 pm - 9:29 pmDCA-STL
2h 29mnonstop
$199American Airlines
Find Deal
Mon, Jul 8 - Tue, Jul 16
5:42 pm - 8:43 pmSTL-DCA
2h 01mnonstop
8:00 pm - 9:29 pmDCA-STL
2h 29mnonstop
$209American Airlines
Find Deal
Fri, Jun 28 - Fri, Jul 5
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
8:15 am - 9:22 amIAD-STL
2h 07mnonstop
$223United Airlines
Find Deal
Wed, Jun 26 - Sat, Jul 6
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
5:55 pm - 7:14 pmIAD-STL
2h 19mnonstop
$231United Airlines
Find Deal
Wed, Jun 26 - Mon, Jul 1
6:10 am - 9:11 amSTL-DCA
2h 01mnonstop
8:00 pm - 9:29 pmDCA-STL
2h 29mnonstop
$233American Airlines
Find Deal
Mon, Jul 29 - Thu, Aug 1
5:49 pm - 8:49 pmSTL-DCA
2h 00mnonstop
8:00 pm - 9:29 pmDCA-STL
2h 29mnonstop
$244American Airlines
Find Deal
Wed, Jul 24 - Sun, Jul 28

Flights from St. Louis to Washington, D.C. - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

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

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from St. Louis to Washington, D.C..
Our data shows that the cheapest route for a one-way flight from St. Louis to Washington, D.C. cost $94 and was between St. Louis and Washington, D.C. Reagan-National Airport. On average, the best prices are found if you fly from St. Louis to Baltimore. The average price for a return flight for this route is $198.

What’s the cheapest day of the week to fly from St. Louis to Washington, D.C.?

The average price of all flights from St. Louis to Washington, D.C. clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Washington, D.C. on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from St. Louis to Washington, D.C.. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Washington, D.C. is January, where tickets cost $208 on average. On the other hand, the most expensive months are June and May, where the average cost of tickets is $326 and $302 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Washington, D.C., you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 62 days before departure.

Which airlines provide the cheapest flights from St. Louis to Washington, D.C.?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting St. Louis to Washington, D.C. were found on Spirit Airlines ($140) and Frontier ($152). Spirit Airlines proposed the cheapest one-way flight at $81.

Which airlines fly most frequently between St. Louis and Washington, D.C.?

Southwest connects St. Louis to Washington, D.C. with up to 8 flights per day. American Airlines also offers 2 flights per day, while United Airlines follows with 2 flights per day.

Which airlines fly non-stop between St. Louis and Washington, D.C.?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from St. Louis to Washington, D.C..
There are 3 airlines that fly nonstop from St. Louis to Washington, D.C.. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with American Airlines at $191 for a one-way flight. On average, the best prices for this route can be found at American Airlines.

How many flights are there between St. Louis and Washington, D.C. per day?

Each day, there are between 11 and 14 nonstop flights that take off from St. Louis and land in Washington, D.C., with an average flight time of 2h 01m. The most common departure time is 8:00 am and most flights take off in the morning, while the most flights land at Washington, D.C. Reagan-National Airport. Each week, there are 89 flights. The most frequent day of departure is Monday, when 16% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between St. Louis and Washington, D.C.?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from St. Louis to Washington, D.C. take?

The average nonstop flight takes 2h 00m, covering a distance of 717 miles.

What’s the earliest departure time from St. Louis to Washington, D.C.?

Early birds can take the earliest flight from St. Louis at 5:15 am and will be landing in Washington, D.C. at 8:15 am.

What’s the latest departure time from St. Louis to Washington, D.C.?

If you prefer to fly at night, the latest flight from St. Louis to Washington, D.C. jets off at 8:55 pm and lands at 11:55 pm.

Good to know

Low season

January

High season

May

Cheapest flight

$81
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from St. Louis to Baltimore

When to book flights from St. Louis to Washington, D.C.

Are your dates flexible? Find out the best times to travel from St. Louis to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Washington, D.C.

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

    In the last 3 days, the lowest price for a flight from St. Louis to Washington, D.C. was $81 for a one-way ticket and $140 for a round-trip.

  • Do I need a passport to fly between St. Louis and Washington, D.C.?

    No

  • Which airports will I be using when flying from St. Louis to Washington, D.C.?

    On your way to Washington, D.C., you’ll fly out from Lambert-St Louis. You’ll be landing in one of Washington, D.C.’s 2 airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Washington, D.C.?

    All the following airlines offer inflight Wi-Fi service on the St. Louis to Washington, D.C. flight route: American Airlines, United Airlines, Lufthansa, Alaska Airlines, Delta, JetBlue, and Air Canada.

  • Which aircraft models fly most regularly from St. Louis to Washington, D.C.?

    The Airbus A319 is the aircraft model that flies most regularly on the St. Louis to Washington, D.C. flight route.

  • Which airline alliances offer flights from St. Louis to Washington, D.C.?

    oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Washington, D.C., with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from St. Louis to Washington, D.C.?

    There are nonstop flights from St. Louis to Washington, D.C. on a daily basis.

  • Which is the best airline for flights from St. Louis to Washington, D.C., Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Washington, D.C. are Delta and United Airlines. With an average price for the route of $296 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $334 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from St. Louis to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $148 or less one-way and $253 or less round-trip.

Prefer to fly non-stop from St. Louis to Washington, D.C.?

Find which airlines fly direct from Lambert-St Louis to Washington, D.C., which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Washington, D.C.

Monday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Tuesday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Wednesday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Thursday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Friday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Saturday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Sunday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

See more direct flights

Nonstop returns

Washington, D.C. to Lambert-St Louis

Monday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Tuesday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Wednesday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Thursday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Friday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Saturday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

Sunday

American Airlines, Avianca, Brussels Airlines, +4 more

American Airlines, Avianca, +5 more

See more direct flights
See more direct flights

Top 4 airlines serving from St. Louis to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10419 reviews
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
8.0Entertainment
Airline reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

10.0 ExcellentMichael, May 2024SJC - ATL
Read more about Delta reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

All flights were on time and boarding was issue free

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

Crowded flight, but upbeat and kind crew. Pilot greeted us at door, flight attendant thanked a number of “special” passengers for their business, another addressed an eight-year old boy as “young man.” United obviously trying to up their game, but though all of that is nice and notable, flying still feels like moving along a human assembly line, being herded into one small space after another (boarding areas with too few seats, planes with limited personal space, shuttles (IAD) packed too full.

It was ok until we got to DC and I wanted to use my United Club pass and the snobbish receptionist said that they don’t take one pass. It took me everything itch of patience not to tell her off

Food choice was poor and we had to buy on board snacks.

We were offer chocolate cookies , not everyone eat chocolate. Thank you

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Lost luggage again. Our second trip to Mykonos, and 2nd time no luggage.

The CX617 from HK to BKK was delayed more than 1.5 hours.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

The flight was great until towards the end when the flight attendant read an excessively long commercial for purchasing an american airlines credit card. The worst part is that we are doing a lot of traveling this year so i was actually interested in getting the credit card, but I was so annoyed with the long commercial that I completely dismissed the flight attendant bringing around the information. Next time, keep the sales pitch to 10 seconds and then pass around the brochures!!

Nice aircraft. Plane was PACKED full and distance between seats was tight. Had it been more than a two hour flight it would not have been tolerable. I had much more knee space on the JetBlue flight I went out on.

New ridiculous policy by american destroyed my allegiance to american. As a million miler with american, I expected it would be easy to get on an earlier flight when I got to airport earlier than expected, and save a five hour layover. WRONG. The online app would not let me switch flights, So I called, and was promised a call back in 90 minutes. HAH! The customer service desk at DCA said “we no longer have access to changing a flight on our screens. If the app couldn’t do it, I should send a letter to American, but there’s nothing else possible!”

I am tired of being nickel and dimed for seat location, checked luggage and carry on bags. That is why i rarely fly anymore.

It was right on time and crew were very courteous

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Literally the worst experience ever and I had my service dog with me. Flight was supposed to leave at 1:51 PM but the plane arrived late. They boarded us around 3 PM and kept us on the plane for an hour saying that due to weather conditions in Miami, we could not takeoff yet. After waiting for an hour, they deplaned. And then they will not give us our bags back that we could just leave and schedule for another flight. Every hour they kept updating saying we have to wait another hour without any explanation as to what was going on. Eventually, I went to customer service to change my ticket, but by the time I made it to the front of the line, they started boarding my flight again. And then when we got onto the flight, they said there were two flight attendants That were past their shift. They kept us on the plane for about another 40 minutes until they told us they had no other flight attendance and had to deplane again. Then I gave us hotel vouchers and told us we would be on a flight at 6 AM the next day. At this point it is about 9 PM. I get to the hotel with my dog, who hasn’t been able to go potty for about eight hours. When I arrived at the hotel, I got a text alert saying my flight has been canceled at 6 AM and they moved past to 5 AM, however the hotel shuttle doesn’t leave early enough to make it to the airport for 5 AM flight. So me and some other passengers got a cab after about three hours of sleep to get back to the airport. This was the worst experience ever.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

Book cheap flights from St. Louis to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Washington, D.C. found on KAYAK in the last 72 hours.
9/14Sat
1 stopSpirit Airlines
5h 48mSTL-BWI
$81
6/11Tue
1 stopFrontier
11h 03mSTL-BWI
$84
7/1Mon
nonstopAmerican Airlines
2h 02mSTL-DCA
$85
7/1Mon
1 stopDelta
6h 44mSTL-DCA
$94
7/2Tue
1 stopDelta
5h 01mSTL-IAD
$94
7/9Tue
nonstopAmerican Airlines
2h 00mSTL-DCA
$95
8/6Tue
nonstopUnited Airlines
2h 10mSTL-IAD
$95
8/25Sun
nonstopUnited Airlines
2h 08mSTL-IAD
$105
6/30Sun
1 stopSun Country Air
14h 59mSTL-IAD
$123
6/30Sun
1 stopSun Country Air
14h 59mSTL-IAD
$127

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Last minute flights from St. Louis to Washington, D.C.

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Washington, D.C. that are departing in the next 10 days.
6/6Thu
multi-stopFrontier
11h 03mSTL-BWI
6/10Mon
multi-stopFrontier
16h 33mBWI-STL
$231
6/4Tue
multi-stopFrontier
11h 03mSTL-BWI
6/5Wed
multi-stopFrontier
16h 33mBWI-STL
$242
6/6Thu
multi-stopSpirit Airlines
19h 19mSTL-BWI
6/10Mon
multi-stopSpirit Airlines
21h 52mBWI-STL
$279
6/4Tue
multi-stopSpirit Airlines
8h 41mSTL-BWI
7/3Wed
multi-stopSpirit Airlines
35h 58mBWI-STL
$299
6/5Wed
nonstopAmerican Airlines
2h 01mSTL-DCA
6/19Wed
nonstopAmerican Airlines
2h 25mDCA-STL
$477
6/5Wed
nonstopAmerican Airlines
2h 01mSTL-DCA
6/19Wed
multi-stopAmerican Airlines
5h 36mDCA-STL
$487
6/5Wed
nonstopUnited Airlines
2h 10mSTL-IAD
6/19Wed
multi-stopUnited Airlines
6h 50mIAD-STL
$487
6/5Wed
multi-stopDelta
3h 41mSTL-IAD
6/19Wed
multi-stopDelta
4h 10mIAD-STL
$496
6/6Thu
multi-stopDelta
7h 09mSTL-IAD
6/10Mon
multi-stopDelta
5h 23mIAD-STL
$498
6/4Tue
multi-stopUnited Airlines
4h 16mSTL-IAD
6/8Sat
nonstopUnited Airlines
2h 12mIAD-STL
$545

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St. Louis - Washington, D.C. Flights

Departure:

St. Louis (STL)United States

Return flight deals:

Washington, D.C. - St. Louis

Cabin classes:

$647
$839
$1,216
$198