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STL - WAS

$55 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 5/9. 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
Sun 5/26
Sun 6/2

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 44,335,567 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:39 am - 6:42 pmSTL-BWI
6h 03m1 stop
9:00 pm - 7:13 amBWI-STL
11h 13m1 stop
Sat, May 11 - Sat, May 11
11:06 pm - 11:33 amSTL-BWI
11h 27m1 stop
8:46 pm - 7:08 amBWI-STL
11h 22m1 stop
$98Frontier
Find Deal
Thu, May 16 - Sat, May 18
2:35 pm - 8:42 amSTL-BWI
17h 07m2 stops
7:43 pm - 5:29 pmBWI-STL
22h 46m1 stop
$129Spirit Airlines
Find Deal
Tue, May 14 - Wed, May 15
2:35 pm - 8:15 amSTL-BWI
16h 40m1 stop
10:12 pm - 5:29 pmBWI-STL
20h 17m1 stop
$133Spirit Airlines
Find Deal
Tue, May 7 - Wed, May 8
6:08 am - 11:50 amSTL-DCA
4h 42m1 stop
3:26 pm - 4:51 pmDCA-STL
2h 25mnonstop
$173American Airlines
Find Deal
Tue, Jun 11 - Tue, Jun 11
5:29 pm - 10:47 pmSTL-DCA
4h 18m1 stop
6:10 am - 9:19 amDCA-STL
4h 09m1 stop
$178Delta
Find Deal
Sat, May 25 - Sat, Jun 1
5:29 pm - 10:52 pmSTL-IAD
4h 23m1 stop
6:00 am - 9:19 amIAD-STL
4h 19m1 stop
$178Delta
Find Deal
Sat, May 25 - Wed, May 29
5:04 pm - 8:00 pmSTL-DCA
1h 56mnonstop
2:19 pm - 3:35 pmDCA-STL
2h 16mnonstop
$184American Airlines
Find Deal
Thu, May 30 - Tue, Jun 4
3:15 pm - 9:01 pmSTL-IAD
4h 46m1 stop
8:32 am - 9:59 amIAD-STL
2h 27mnonstop
$238United Airlines
Find Deal
Sat, May 18 - Tue, May 21
5:35 pm - 11:14 pmSTL-IAD
4h 39m1 stop
12:35 pm - 2:02 pmIAD-STL
2h 27mnonstop
$253United Airlines
Find Deal
Fri, May 17 - Tue, May 21

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 $69 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 $173.

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 December, where tickets cost $269 on average. On the other hand, the most expensive months are June and March, where the average cost of tickets is $362 and $343 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 48 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 ($98) and Spirit Airlines ($129). Frontier proposed the cheapest one-way flight at $55.

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

Southwest connects St. Louis to Washington, D.C. up to 7 flights per day, followed by American Airlines (3 flights per day), and United Airlines (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 9 and 15 nonstop flights that take off from St. Louis and land in Washington, D.C., with an average flight time of 2h 02m. 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 91 flights. The most frequent day of departure is Sunday, 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 1h 56m, 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 6:00 am and will be landing in Washington, D.C. at 9:00 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 8:45 pm and lands at 11:45 pm.

Good to know

Low season

January

High season

March

Cheapest flight

$55
Best time to beat the crowds with an average 3% 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 $55 for a one-way ticket and $95 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, Delta, Alaska Airlines, United Airlines, JetBlue, Lufthansa, 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 $354 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 $125 or less one-way and $243 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 10966 reviews
8.0entertainment
8.6crew
7.9comfort
7.4food
8.2boarding
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

I liked the ease of checking in, luggage check in, wheel chair assistance, boarding and flight.

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

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.

Flight was well orchestrated, made up time despite circling a bit all good on United. Travelers can just be so into themselves that common courtesy has gone out window for some, but that’s not on United.

Loading was quick and efficient. The bate and switch with discount tickets were you are forced to pay for bag.

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.

Their computers were down upon arrival to the airport. They were unable to figure out how to board us. We were delayed over an hour and a half.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

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.
5/9Thu
1 stopFrontier
11h 02mSTL-BWI
$55
5/13Mon
1 stopFrontier
22h 16mSTL-BWI
$60
6/4Tue
1 stopSpirit Airlines
8h 41mSTL-BWI
$63
5/22Wed
nonstopAmerican Airlines
1h 59mSTL-DCA
$80
6/4Tue
2 stopsSpirit Airlines
12h 42mSTL-BWI
$80
5/22Wed
1 stopDelta
4h 27mSTL-DCA
$89
5/29Wed
1 stopDelta
4h 25mSTL-IAD
$89
8/17Sat
nonstopAmerican Airlines
2h 02mSTL-DCA
$95
5/30Thu
nonstopUnited Airlines
2h 10mSTL-IAD
$123
8/17Sat
nonstopUnited Airlines
2h 10mSTL-IAD
$130

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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.
5/1Wed
multi-stopFrontier
21h 34mSTL-BWI
5/5Sun
multi-stopFrontier
27h 31mBWI-STL
$178
5/1Wed
multi-stopFrontier
24h 55mSTL-DCA
5/5Sun
multi-stopFrontier
21h 57mDCA-STL
$187
4/30Tue
multi-stop
29h 31mSTL-BWI
5/2Thu
multi-stop
14h 29mBWI-STL
$266
4/30Tue
multi-stop
30h 58mSTL-BWI
5/2Thu
multi-stop
14h 29mBWI-STL
$281
5/1Wed
nonstopAmerican Airlines
2h 01mSTL-DCA
5/5Sun
nonstopAmerican Airlines
2h 38mDCA-STL
$479
5/1Wed
multi-stopAmerican Airlines
4h 44mSTL-DCA
5/5Sun
nonstopAmerican Airlines
2h 25mDCA-STL
$487
5/1Wed
multi-stopDelta
4h 13mSTL-DCA
5/4Sat
multi-stopDelta
4h 45mDCA-STL
$498
5/1Wed
multi-stopDelta
5h 59mSTL-IAD
5/5Sun
multi-stopDelta
4h 21mIAD-STL
$498
5/1Wed
nonstopUnited Airlines
2h 10mSTL-IAD
5/4Sat
nonstopUnited Airlines
2h 27mIAD-STL
$547
5/1Wed
nonstopUnited Airlines
2h 10mSTL-IAD
5/5Sun
nonstopUnited Airlines
2h 27mIAD-STL
$548

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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:

$514
$839
$1,216
$173

Compare transportation modes for St. Louis to Washington, D.C.

Average priceAverage duration
Flights$7931h 56m
Buses$20030h 57m