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WAS - STL

Find cheap flights from Washington, D.C. to St. Louis from $55

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to St. Louis departing on 4/25. 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
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to St. Louis, 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 Washington, D.C. to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

Save 20% or moreCompare multiple travel sites with one search.

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

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Cheap flight deals from Washington, D.C. to St. Louis

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to St. Louis 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
8:50 pm - 7:08 amBWI-STL
11h 18m1 stop
9:26 pm - 8:30 amSTL-BWI
10h 04m1 stop
$98Frontier
Find Deal
Wed, May 15 - Mon, May 20
8:32 pm - 7:13 amBWI-STL
11h 41m1 stop
9:53 pm - 8:27 pmSTL-BWI
21h 34m1 stop
$107Frontier
Find Deal
Mon, Apr 22 - Wed, Apr 24
6:35 am - 1:44 pmBWI-STL
8h 09m1 stop
6:24 pm - 8:38 amSTL-BWI
13h 14m1 stop
$170Spirit Airlines
Find Deal
Tue, Apr 23 - Thu, Apr 25
7:51 pm - 9:16 pmDCA-STL
2h 25mnonstop
6:20 am - 9:21 amSTL-DCA
2h 01mnonstop
$174American Airlines
Find Deal
Mon, Apr 22 - Wed, Apr 24
6:00 am - 10:59 amIAD-STL
5h 59m1 stop
6:12 pm - 10:52 pmSTL-IAD
3h 40m1 stop
$176Delta
Find Deal
Sat, May 4 - Wed, May 8
5:45 pm - 11:40 pmDCA-STL
6h 55m1 stop
2:55 pm - 9:21 pmSTL-DCA
5h 26m1 stop
$176Delta
Find Deal
Sat, May 18 - Wed, May 22
2:12 pm - 6:08 pmDCA-STL
4h 56m1 stop
6:16 am - 9:15 amSTL-DCA
1h 59mnonstop
$182American Airlines
Find Deal
Mon, May 6 - Sat, May 11
11:00 am - 5:34 pmBWI-STL
7h 34m1 stop
6:24 pm - 1:19 amSTL-BWI
5h 55m1 stop
$190Spirit Airlines
Find Deal
Sat, Apr 20 - Sat, Apr 27
5:29 pm - 9:55 pmIAD-STL
5h 26m1 stop
11:10 am - 4:23 pmSTL-IAD
4h 13m1 stop
$193United Airlines
Find Deal
Mon, May 6 - Tue, May 7
5:50 pm - 7:19 pmIAD-STL
2h 29mnonstop
6:00 am - 11:43 amSTL-IAD
4h 43m1 stop
$229United Airlines
Find Deal
Wed, Apr 10 - Wed, Apr 17

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

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

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

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from Washington, D.C. to St. Louis.
Our data shows that the cheapest route for a one-way flight from Washington, D.C. to St. Louis cost $79 and was between Washington, D.C. Reagan-National Airport and St. Louis. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $173.

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

The average price of all flights from Washington, D.C. to St. Louis clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to St. Louis on a Thursday and more expensive on a Monday. On your return trip to Washington, D.C., you should consider flying back on a Saturday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. to St. Louis, 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 Washington, D.C. to St. Louis is February, where tickets cost $284 on average. On the other hand, the most expensive months are June and November, where the average cost of tickets is $391 and $388 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. to St. Louis, 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 Washington, D.C. to St. Louis, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 50 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Washington, D.C. to St. Louis found by KAYAK users in the last 72 hours was for $98 on Frontier, followed by Spirit Airlines ($170). One-way flight deals have also been found from as low as $55 on Frontier and from $79 on American Airlines.

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

Southwest connects Washington, D.C. to St. Louis with up to 12 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 Washington, D.C. and St. Louis?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Washington, D.C. to St. Louis.
There are 3 airlines that fly nonstop from Washington, D.C. to St. Louis. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with United Airlines at $173 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 Washington, D.C. and St. Louis per day?

Each day, there are between 12 and 22 nonstop flights that take off from Washington, D.C. and land in St. Louis, with an average flight time of 2h 19m. The most common departure time is 8:00 am and most flights take off in the morning. Each week, there are 122 flights. The most frequent day of departure is Friday, when 18% of all weekly flights depart. The fewest flights depart on a Saturday.

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

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 Washington, D.C. to St. Louis take?

The average nonstop flight takes 2h 16m, covering a distance of 717 miles.

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

Early birds can take the earliest flight from Washington, D.C. at 6:20 am and will be landing in St. Louis at 7:35 am.

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

If you prefer to fly at night, the latest flight from Washington, D.C. to St. Louis jets off at 9:55 pm and lands at 11:20 pm.

Good to know

Low season

January

High season

May

Cheapest flight

$55
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Baltimore to St. Louis

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

Are your dates flexible? Find out the best times to travel from Washington, D.C. to St. Louis 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 Washington, D.C. to St. Louis

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to St. Louis was $55 for a one-way ticket and $98 for a round-trip.

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

    No, a passport isn't needed to fly from Washington, D.C. to St. Louis. However, local authorities might ask for an official ID.

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

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in St. Louis. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Lambert-St Louis.

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

    American Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Washington, D.C. to St. Louis flight route.

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

    The Canadair (Bombardier) Regional Jet CRJ-550 is the aircraft model that flies most regularly on the Washington, D.C. to St. Louis flight route.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to St. Louis are Delta and United Airlines. With an average price for the route of $351 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 $428 and an overall rating of 7.4.

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

    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 Washington, D.C. to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Washington, D.C. 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 Washington, D.C. to St. Louis?

    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 St. Louis with an airline and back to Washington, D.C. with another airline.

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

    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 St. Louis from Washington, D.C. 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 Washington, D.C. to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $124 or less one-way and $232 or less round-trip.

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

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

Nonstop departures

Washington, D.C. to Lambert-St Louis

Monday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Tuesday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Wednesday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Thursday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Friday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Saturday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Sunday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

See more direct flights

Nonstop returns

Lambert-St Louis to Washington, D.C.

Monday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Tuesday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Wednesday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Thursday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Friday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Saturday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

Sunday

American Airlines, Avianca, Brussels Airlines, +5 more

American Airlines, Avianca, +6 more

See more direct flights
See more direct flights

Top 5 airlines serving from Washington, D.C. to St. Louis

Need help choosing which airline to fly with from Washington, D.C. to St. Louis? 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 KAYAK reviews.
8.0
DeltaOverall score based on 11402 reviews
81overall
82boarding
80entertainment
75food
86crew
79comfort
Airline reviews

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

Read more about Delta

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

I didn’t not like that I could not select my seat and ended up with the worse seat.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Delta did an awful job w logistics at DTW. Missed connection. We were there an hour early. SUCKED

Inflight entertainment stopped working as we taxi to runway and never worked again until landing and taxi to gate. Grrrr

Had to run to make it only to have the flight delayed to wait for all the late connectors Second drink service skipped up

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

MSP to Atlanta was much better than Atlanta to St. Kitts. Paid $180 each for myself and wife for Delta comfort from Atlanta to St. Kitts. Seats were more narrow and obviously old and worn out. Tailbone is killing me. Seat would not recline. Seats behind reclined and we were not an exit row or in front of an exit row. Entertainment did not work in that the movie jumped forward and back and there was no audio. The plug in the arm rest was loose. Flight attendant tried “resetting” the video for my seat but no good. She never checked back. Someone else near me had the same issue. Touch screen was unresponsive. No where near as comfortable as MSP to Atlanta flight. 3 plus hrs. flight time without the basic amenities and not even remotely close to comfortable but paid for Comfort plus. I will be very disappointed if I have the same on my return “Comfort Plus” flight St. Kitts to Atlanta. At the very least my wife and I should be refunded for round trip “Comfort Plus” charges. Please feel free to contact me directly for more details.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

My interaction with the flight attendent Eve was horrible. I was seated in 3F and was blown away watching her repeatedly skip me as she took other customer orders for lunch...she took the customer next to me but skipped me, then took everyone's order around me (in front of and behind me) . After she had taken every customer's orders to include those behind me, she came to me and said we are out of everything except one last item. I was mortified, in that, I am a 1k flyer, had pre-ordered AND as an African American could only assume why she repeatedly skipped me...mortified. no words

The Flight was good, pilot seemed very skillful. My wheel chair sister who could barely walk was allotted the second last seat in the aircraft, with great difficulty she managed to reach on her seat, as she required attendance we were given separate seat, even on request no one cared, so much so there were single passengers who were given twin seats. May not be taken as complaint but a reminder to the checkin staff to keep in mind in future the allottment of wheel chair passengers seats.

Almost 2 hour delay in boarding with all standing ready to board at original time. No explanation given.

787-9 Transcon from IAD-LAX FYI no meals in premium plus, not considered Premium - seats are wonderful https://www.united.com/ual/en/us/fly/travel/inflight/premium-services.html Horrible handling of delayed flight

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

Boarding area is a mess. Lines not bounded and gate area too small. Food options (on this specific flight) were poor and you couldn’t pick part of it since it was like a mash of chicken and other unrecognisable stuff. Comfort of seats along with child noise made it difficult to get a good sleep. Last, the flight attendant that served my aisle was rude (others seemed fine) towards me and others.

It was a great experience. Do not normally fly United. Very nice. Thank you and happy holidays

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Everything was on time; the flight attendants and the gate personnel were very pleasant and helpful.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

Awful! The flight was delayed and we sat on the plane in DCA for an hour because fuel was out in the wrong part of the plane and would not be accessible during flight. So the plane had to be refueled in correct tank. They also allowed someone to get off of the plane. This delayed my six hour flight by an hour and made me miss my connecting flight. I ran to new gate and American Airlines agents new about the delay and even knew that I was trying to make the connection. They knew thru communication with my friend while in flight that I was in the airport and running to the new gate and they still closed the gate and refused to let me on the new flight despite plane still being at the gate. It was horrible and I had to be rebooked on a flight for 24 hours later. This has been a nightmare and if American Airlines can cause customers to be delayed and then have zero empathy as having an on time flight was more important to them than helping a customer who was delayed by no fault of her own, then it's seems that it's not a company that I want to continue to give my loyalty to. I'm so disgusted.

Help was available but timing was bad in my case

It was a horrible snow storm, but updates were inconsistent and the app never displayed a remotely accurate time or gate until very close to boarding.

The flight was so short that the lack of leg room didn't bother me for long. The plane was smaller so only two seats per row and there were chargers. However, they didn't serve any snacks.

Staff were very helpful to my dad in a wheelchair. Thank you.

3 hour delay was brutal though not Spirit Airlines fault. the control tower would not let us take off because of weather

Beware of all the extras. Nickel and dimed. Everything was extra. It turns a $90 fare in to a $400 fair quite easily.

I flew from Las Vegas to Reno Nevada. Airfare was 60 $ round trip. I needed to bring my skis and boots.that was going to be $111 to bring them. Upon arrival they informed me that anyone who has skis more than 62 inches long is charged an oversize fee of $150 each way. Almost everyone over 5 foot five has skis over 62 inches long. So I paid $60 for the flight and $411 to bring my skis with me! WTF

Didn’t make the connecting flight due to a delay on our first flight.

I like the price. I did not like the seats: very little space and not reclining.

Flights are great except for the ticketing service on the terminal.. Too little employees taking care for lots of flights.

The seats were very uncomfortable. The crew was very polite and helpful.

The airplane was extremely hot the air conditioner wasn’t working I

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

Seats horrible. No way of getting comfortable . But flight ran smoothly

I hope to avoid flying with them in the future. First flight got cancelled then got stuck with a 13 hour layover in Denver. The process was long and frustrating to many people.

First time flying Frontier, I am not sure the Ala Carte menu of options is for me.

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

See my previous comment which is mostly about our flight from Phoenix to SFO

Terrible. Initially we were shocked by the outrageous baggage fees we needed to pay at check in for our so-called "discounted, economy flight" - we paid over $200 (!!) for one check-in and 2 carry-on bags - this felt like a real bait-and-switch" scam. Our flight from Phoenix to SFO was delayed by 4 hours. Multiple apparent causes (from needing to make space for other planes that were landing late to problem with cabins pressure system, and whatever...). After de-boarding and re-boarding we still waited at least an hour on a cramped, poorly ventilated plane before take-off. Seats were cramped, uncomfortable - did not recline at all. No water until we were flying for a while. No complimentary snacks. Upon arrival at SFO my luggage was sent upstairs to the check-in counter. The customer service person there refused to let me examine a bunch of bags that were sitting on a nearby cart because it was "behind the counter", rather made me wait until another attendant did an exhaustive and failed (?computer) search, came back and told me they were unable to locate my bag. I asked her to look on the cart, lo and behold, there was my bag just a few feet away! Missed my choir rehearsal that evening due to all of the delays. One more thing, a few days later my husband and I tested positive for Covid. Since we both are fully vaccinated, careful about masking and have never had Covid previously, we will never know, but suspect we may have acquired the infection during the prolonged wait on your poorly ventilated plane (person in the row in front of us was coughing). After registering a complaint, we received a measly $50 voucher for future flights. Needless to say we have no intention of flying with Frontier Airlines ever again.

I liked getting off the plane. Everything else was well below standards. Not even offering a bag of peanuts for free for a 4 hours flight is ridiculous.

The whole experience was bad. Didn't know no complimentary drinks or snacks. $4.39 for a soda is ridiculous even a bottle water. A carry on was $74 just crazy. I don't think I will take this airline ever again. Very bad

Delayed...attendants checked every single bag and item for sizes before boarding.

There was no wifi, there was no usb charger on the planes Frontier lowered the weight limit on suitcases from 50 to 40 pounds Frontier now charges for a seat...really? If i don't pay for a basic seat, do i stand the whole flight? Frontier now charges for the carry on, just like for the checked suitcase The bundle pricing is way over priced.

I am HIGHLY unhappy with the amount of money I spent on the flight. Paid in advance only to find the flight at a discount price a week or so before the flight. I will not fly frontier again and have bad mouthed your business since to anyone I have spoken with about flying (which has been many a people). Crew was mediocre and instead of moving me to a spot where I could gain some leg room they sat their flight attendant there. Won’t be flying frontier in the future.

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

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to St. Louis found on KAYAK in the last 72 hours.
4/25Thu
1 stopFrontier
10h 56mBWI-STL
$55
5/1Wed
1 stopFrontier
23h 09mBWI-STL
$59
5/14Tue
nonstopAmerican Airlines
2h 15mDCA-STL
$79
4/17Wed
nonstopAmerican Airlines
2h 25mDCA-STL
$80
4/27Sat
1 stopDelta
5h 05mIAD-STL
$88
5/18Sat
1 stopDelta
6h 55mDCA-STL
$88
4/4Thu
1 stopSpirit Airlines
16h 50mBWI-STL
$94
4/20Sat
2 stopsSpirit Airlines
12h 08mBWI-STL
$104
5/13Mon
1 stopUnited Airlines
5h 26mIAD-STL
$139
5/21Tue
nonstopUnited Airlines
2h 27mIAD-STL
$140

Search by stops

Search by airline

Search by price

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

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 Washington, D.C. to St. Louis that are departing in the next 10 days.
3/31Sun
multi-stopFrontier
10h 26mDCA-STL
4/3Wed
multi-stopFrontier
24h 14mSTL-DCA
$285
4/2Tue
multi-stopFrontier
22h 13mDCA-STL
4/5Fri
multi-stopFrontier
17h 38mSTL-DCA
$305
4/1Mon
multi-stopSpirit Airlines
10h 55mBWI-STL
4/5Fri
multi-stopSpirit Airlines
11h 53mSTL-BWI
$487
4/1Mon
multi-stopSpirit Airlines
10h 55mBWI-STL
4/3Wed
multi-stopSpirit Airlines
11h 13mSTL-BWI
$491
4/2Tue
nonstopAmerican Airlines
2h 31mDCA-STL
4/5Fri
nonstopAmerican Airlines
2h 08mSTL-DCA
$503
4/2Tue
nonstopUnited Airlines
2h 27mIAD-STL
4/5Fri
nonstopUnited Airlines
2h 10mSTL-IAD
$503
4/1Mon
multi-stopAmerican Airlines
4h 46mIAD-STL
4/15Mon
multi-stopAmerican Airlines
6h 18mSTL-IAD
$506
4/2Tue
nonstopUnited Airlines
2h 27mIAD-STL
4/5Fri
multi-stopUnited Airlines
5h 10mSTL-IAD
$512
4/2Tue
multi-stopDelta
4h 14mIAD-STL
4/4Thu
multi-stopDelta
4h 56mSTL-IAD
$516
4/1Mon
multi-stopDelta
5h 21mIAD-STL
4/3Wed
multi-stopDelta
4h 56mSTL-IAD
$582

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Flights to St. Louis

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Washington, D.C.

Cabin classes:

$673
$636
$582
$173

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

Average priceAverage duration
Flights$3212h 25m
Buses$19732h 45m