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STL - WAS

$38 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 9/10. 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
Wed 7/10
Wed 7/17

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 42,898,604 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
7:33 pm - 7:50 amSTL-BWI
11h 17m1 stop
8:54 pm - 9:25 amBWI-STL
13h 31m1 stop
$143Frontier
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Tue, Jul 23 - Tue, Jul 30
10:32 pm - 12:03 pmSTL-BWI
12h 31m1 stop
8:00 am - 8:20 pmBWI-STL
13h 20m1 stop
$145Frontier
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Tue, Aug 20 - Mon, Sep 2
10:32 pm - 12:03 pmSTL-BWI
12h 31m1 stop
10:10 am - 7:07 amBWI-STL
21h 57m1 stop
Tue, Aug 20 - Wed, Sep 4
3:23 pm - 4:02 pmSTL-BWI
23h 39m1 stop
8:54 pm - 9:25 amBWI-STL
13h 31m1 stop
Tue, Jul 9 - Tue, Jul 16
6:12 am - 9:11 amSTL-DCA
1h 59mnonstop
8:01 pm - 9:21 pmDCA-STL
2h 20mnonstop
$179American Airlines
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Wed, Aug 21 - Wed, Sep 4
3:18 pm - 10:06 pmSTL-BWI
5h 48m1 stop
1:33 pm - 4:56 pmBWI-STL
4h 23m1 stop
$180American Airlines
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Wed, Jul 10 - Tue, Jul 23
5:25 pm - 11:46 pmSTL-DCA
5h 21m1 stop
9:00 am - 2:56 pmDCA-STL
6h 56m1 stop
$188Delta
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Mon, Jul 1 - Fri, Jul 5
4:02 pm - 11:59 pmSTL-IAD
6h 57m1 stop
6:10 am - 9:15 amIAD-STL
4h 05m1 stop
$188Delta
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Mon, Jul 1 - Fri, Jul 5
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
5:25 pm - 9:48 pmIAD-STL
5h 23m1 stop
$209United Airlines
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Tue, Jul 9 - Sat, Jul 13
1:04 pm - 4:14 pmSTL-IAD
2h 10mnonstop
8:15 am - 2:18 pmIAD-STL
7h 03m1 stop
$284United Airlines
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Mon, Jul 1 - Fri, Jul 5
5:20 pm - 1:12 amSTL-BWI
6h 52m1 stop
$38Spirit Airlines
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Tue, Sep 10
5:20 pm - 6:05 pmSTL-BWI
23h 45m2 stops
$62Spirit Airlines
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Tue, Sep 10
5:36 pm - 12:05 pmSTL-DCA
17h 29m1 stop
$73Frontier
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Fri, Jun 21
3:47 pm - 12:09 pmSTL-DCA
19h 22m1 stop
$75Frontier
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Tue, Jul 16
5:49 pm - 8:49 pmSTL-DCA
2h 00mnonstop
$84American Airlines
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Fri, Jul 5
6:09 am - 9:11 amSTL-DCA
2h 02mnonstop
$85American Airlines
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Thu, Jul 4
4:02 pm - 9:40 pmSTL-DCA
4h 38m1 stop
$94Delta
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Thu, Jul 4
4:02 pm - 11:59 pmSTL-IAD
6h 57m1 stop
$94Delta
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Mon, Jul 1
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
$105United Airlines
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Fri, Aug 16
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
$115United Airlines
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Tue, Jul 9
7:44 pm - 7:47 amSTL-BWI
11h 03m1 stop
8:15 pm - 7:07 amBWI-STL
11h 52m1 stop
$178Frontier
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Thu, Jun 13 - Sat, Jun 22
7:44 pm - 2:48 pmSTL-BWI
18h 04m1 stop
8:15 pm - 7:07 amBWI-STL
11h 52m1 stop
$188Frontier
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Fri, Jun 14 - Sat, Jun 22
6:22 pm - 1:28 amSTL-BWI
6h 06m1 stop
8:15 pm - 7:07 amBWI-STL
11h 52m1 stop
Sat, Jun 15 - Sat, Jun 22
6:22 pm - 1:28 amSTL-BWI
6h 06m1 stop
8:48 pm - 9:29 amBWI-STL
13h 41m1 stop
Sat, Jun 15 - Tue, Jun 18
7:00 am - 12:29 pmSTL-BWI
4h 29m1 stop
8:16 pm - 12:03 amBWI-STL
4h 47m1 stop
$451American Airlines
Find Deal
Fri, Jun 14 - Fri, Jun 21
10:15 am - 3:37 pmSTL-BWI
4h 22m1 stop
8:05 am - 12:01 pmBWI-STL
4h 56m1 stop
$478Delta
Find Deal
Tue, Jun 11 - Wed, Jun 12
5:42 pm - 8:43 pmSTL-DCA
2h 01mnonstop
3:26 pm - 4:51 pmDCA-STL
2h 25mnonstop
$535American Airlines
Find Deal
Tue, Jun 11 - Wed, Jun 12
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
8:20 am - 9:32 amIAD-STL
2h 12mnonstop
$535United Airlines
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Wed, Jun 12 - Sat, Jun 15
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
8:32 am - 2:16 pmIAD-STL
6h 44m1 stop
$545United Airlines
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Wed, Jun 12 - Sat, Jun 15
10:15 am - 5:02 pmSTL-BWI
5h 47m1 stop
7:48 pm - 11:43 pmBWI-STL
4h 55m1 stop
$578Delta
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Sat, Jun 15 - Mon, Jun 17
6:12 am - 9:11 amSTL-DCA
1h 59mnonstop
8:01 pm - 9:21 pmDCA-STL
2h 20mnonstop
$179American Airlines
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Wed, Aug 21 - Wed, Sep 4
6:03 pm - 9:00 pmSTL-DCA
1h 57mnonstop
3:45 pm - 5:07 pmDCA-STL
2h 22mnonstop
$189American Airlines
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Tue, Aug 20 - Tue, Sep 3
6:10 am - 9:11 amSTL-DCA
2h 01mnonstop
3:26 pm - 4:47 pmDCA-STL
2h 21mnonstop
$199American Airlines
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Sat, Jul 6 - Tue, Jul 16
6:12 am - 9:11 amSTL-DCA
1h 59mnonstop
8:02 pm - 9:18 pmDCA-STL
2h 16mnonstop
$209American Airlines
Find Deal
Fri, Aug 9 - Mon, Aug 12
6:10 am - 9:11 amSTL-DCA
2h 01mnonstop
8:00 pm - 9:29 pmDCA-STL
2h 29mnonstop
$223American Airlines
Find Deal
Mon, Jul 8 - Tue, Jul 16
6:10 am - 9:11 amSTL-DCA
2h 01mnonstop
3:26 pm - 4:47 pmDCA-STL
2h 21mnonstop
$233American Airlines
Find Deal
Thu, Jul 25 - Thu, Aug 1
5:42 pm - 8:43 pmSTL-DCA
2h 01mnonstop
8:00 pm - 9:29 pmDCA-STL
2h 29mnonstop
$239American Airlines
Find Deal
Tue, Jul 2 - Sun, Jul 7
4:03 pm - 7:03 pmSTL-DCA
2h 00mnonstop
1:59 pm - 3:23 pmDCA-STL
2h 24mnonstop
$254American Airlines
Find Deal
Sat, Jul 20 - Sat, Jul 27
1:04 pm - 4:14 pmSTL-IAD
2h 10mnonstop
8:15 am - 9:22 amIAD-STL
2h 07mnonstop
$325United Airlines
Find Deal
Fri, Jul 12 - Tue, Jul 16
8:25 am - 11:35 amSTL-IAD
2h 10mnonstop
5:55 pm - 7:14 pmIAD-STL
2h 19mnonstop
$330United Airlines
Find Deal
Tue, Jul 9 - Sat, Jul 13

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 $204.

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 Tuesday, 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 $328 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 Frontier ($143) and Spirit Airlines ($167). Spirit Airlines proposed the cheapest one-way flight at $38.

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

Southwest connects St. Louis to Washington, D.C. with up to 10 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 21 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 6:00 pm and most flights take off in the morning, while the most flights land at Baltimore. Each week, there are 104 flights. The most frequent day of departure is Friday, when 20% 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 1h 57m, 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

$38
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 $38 for a one-way ticket and $143 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 $337 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 $138 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 10295 reviews
7.4Food
8.2Boarding
8.0Entertainment
8.6Crew
7.9Comfort
Airline reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

2.0 MediocreCraig, Jun 2024CVG - LGA
Read more about Delta reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

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!

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

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.

Terrible. I didn’t fly and I had an important meeting the next day.

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.

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

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.

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.
9/10Tue
1 stopSpirit Airlines
6h 52mSTL-BWI
$38
9/10Tue
2 stopsSpirit Airlines
23h 45mSTL-BWI
$62
6/21Fri
1 stopFrontier
17h 29mSTL-DCA
$73
7/16Tue
1 stopFrontier
19h 22mSTL-DCA
$75
7/5Fri
nonstopAmerican Airlines
2h 00mSTL-DCA
$84
7/4Thu
nonstopAmerican Airlines
2h 02mSTL-DCA
$85
7/4Thu
1 stopDelta
4h 38mSTL-DCA
$94
7/1Mon
1 stopDelta
6h 57mSTL-IAD
$94
8/16Fri
nonstopUnited Airlines
2h 10mSTL-IAD
$105
7/9Tue
nonstopUnited Airlines
2h 10mSTL-IAD
$115

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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.
6/13Thu
multi-stopFrontier
11h 03mSTL-BWI
6/22Sat
multi-stopFrontier
11h 52mBWI-STL
$178
6/14Fri
multi-stopFrontier
18h 04mSTL-BWI
6/22Sat
multi-stopFrontier
11h 52mBWI-STL
$188
6/15Sat
multi-stop
6h 06mSTL-BWI
6/22Sat
multi-stop
11h 52mBWI-STL
$207
6/15Sat
multi-stop
6h 06mSTL-BWI
6/18Tue
multi-stop
13h 41mBWI-STL
$287
6/14Fri
multi-stopAmerican Airlines
4h 29mSTL-BWI
6/21Fri
multi-stopAmerican Airlines
4h 47mBWI-STL
$451
6/11Tue
multi-stopDelta
4h 22mSTL-BWI
6/12Wed
multi-stopDelta
4h 56mBWI-STL
$478
6/11Tue
nonstopAmerican Airlines
2h 01mSTL-DCA
6/12Wed
nonstopAmerican Airlines
2h 25mDCA-STL
$535
6/12Wed
nonstopUnited Airlines
2h 10mSTL-IAD
6/15Sat
nonstopUnited Airlines
2h 12mIAD-STL
$535
6/12Wed
nonstopUnited Airlines
2h 10mSTL-IAD
6/15Sat
multi-stopUnited Airlines
6h 44mIAD-STL
$545
6/15Sat
multi-stopDelta
5h 47mSTL-BWI
6/17Mon
multi-stopDelta
4h 55mBWI-STL
$578

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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
$200