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$76 Find cheap flights from St. Louis to District of Columbia

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 District of Columbia departing on 7/10. 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 7/17
Wed 7/24

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Best District of Columbia Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Washington, D.C.
Baltimore1 stop$108

Good to know

Low season

January

High season

March

Cheapest flight

$76
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from St. Louis to Reagan Washington National Airport

FAQs - booking District of Columbia flights

  • How does KAYAK find such low prices on flights from St. Louis to District of Columbia?

    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 District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to District of Columbia 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 District of Columbia?

    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 District of Columbia 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 District of Columbia?

    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 District of Columbia 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 cheap flights to District of Columbia

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Washington, D.C. $134 one-way - $253 round-trip
  • Morning departure is around 5% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to District of Columbia

Need help choosing which airline to fly with from St. Louis to District of Columbia? 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 10000 reviews
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
8.0Entertainment
Airline reviews

Flight was 3 hours late so only had an OK experience

6.0 GoodMelissa, Jun 2024RDU - DTW
Read more about Delta reviews

Flight was 3 hours late so only had an OK experience

It was very cold because the air conditioner was on high power, and my son got sick.

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.

The entertainment wasn’t playing in the app or online.

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

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.

My flight was canceled, resulting in not being able to make my daughters graduation in time.

Flight kept being delayed on airport board without any announcement. We were delayed almost 2 hours. Finally boarded and we had no pilots so we sat on a hot plane with screaming kids and no pilots for 40 minutes. Finally he came aboard and did paperwork for 10 minutes before we took off. No apologies or any explanations or even excuses from ANY staff in the entire process. Worst experience ever on the ground and the air I have had.

I recently flew with Spirit Airlines and had an incredibly disappointing experience. I brought a book bag, which should have easily fit in the overhead compartment, but there was no space left. Instead of offering any assistance or a reasonable solution, the airline made me pay $70 for my book bag. This fee was extremely unreasonable and added unnecessary stress to my travel. To make matters worse, the flight attendant was extremely rude, further souring the entire experience. I had a terrible time and will not be flying with Spirit Airlines again.

Delays delays and more delays in both LAX and San Jose. And then I said something else flight was supposed to arrive in Portland at 12:04 but didn't land until 2:30 PM which made me late for my appointment.

We never made it, see previous reviews. Spirit Airlines employees lack compassion and empathy. No one showed any concern or care for us as customers. When we missed our connecting flight due to Spirit scheduling issues, no one batted an eye or tried to help. The response was to book us on another flight a full 24 hours later. We arrived to our gate and the plane was still there and boarding had not yet been completed. We easily could have been allowed to board had the two flight crews communicated that there were passengers coming off a delayed flight. I understand delays happen and are unpredictable, what I'm disappointed in is the way my partner and I were treated during that whole process. Spirit should be ashamed to treat their customers this way. There's a reason the reputation with this airline is what it is and they aren't doing anything to prove otherwise.

Three out of four legs of my trip were delayed. The last leg of my trip was delayed due to passengers and crew not being ready to take off. The boarding process started way late with no explanation as to why. The flight attendants did not have the passengers in check for takeoff - folks were walking around, trying to change seats, and causing a general disturbance preventing us from departing and the crew did nothing about it. All of this caused us to miss my connection home due to the first flight landing at the same time the second one was due to take off. The entire Spirit crew (except for one flight attendant) was unapologetic and unpleasant about this. No one apologized, no one showed any inkling of empathy whatsoever. The response was basically, "we booked you on the next available flight". That next flight was a full 24 hours later, we would have been stranded in the airport and no one even cared or acknowledged us as customers. I'm disappointed in the lack of compassion shown by Spirit agents and customer service reps as a whole. It felt like we were a burden due to airline scheduling issues. The one flight attendant (did not catch her name, but from (ORD to FLL) was wonderful and empathetic.

I thought people that were clearly intoxicated were not allowed to board flights. But of course they let them and of course they sat directly behind us. Kicking seats being so loud you couldn’t hear yourself think. Cussing loudly telling a woman “she was going to punch her in the fucken face” for accidentally mixing her seat assignment up. These people should have been asked to get off the plane but no flight attendant cared. I don’t think I’ll be using spirit again. Better judgment needs to be used when letting people fly drunk.

Nothing to like about Spirit Airlines when you get to your layover up to for hours late.

We received several notifications of a delay but the flight ended up leaving on time without us even tho we were in the airport eating very close by. We received no notification that the flight moved back to its original time.

The bag drop process took longer than other airlines. The boarding and crew were good. The seats do not recline and have minimal padding. The snacks/drinks are for purchase only. The flight was on time with no issues. I would fly them again if the cost was significantly less.

One gate agent in Sioux Falls ruined it for a few people on the flight. It was the usual, that personal item is too large, you are going to have to pay $100 to get it on the flight. One family with a baby were told that they had to have a passport for the baby to get on the flight. Also a Sheriff's Deputy needed to go on the airplane to return a lost cell phone to a minor on the flight. The gate agent would NOT let him go on without a boarding pass. I don't know who this moron was, but the sooner Frontier moves him where he can't interact with people, the better off they will be. Let's just say the deputy did the job that he needed to do and returned the phone to the minor on the plane, even with argument from a gate agent that thought he had way more power than he actually does. Very IRRITATING individual.

Bad experience… crew are extremely strict with personal bags… they overcharge me coz my bag was one inch H

They never updated the boarding pass on their apps to show their delay

Online check-in was not user-friendly. Too many fees, not cost effective.

They wouldn’t let us on the flight even tho we were an hour early. No refund not even our bags that were prepaid

I brought a ticket and car rental through Travelocity. There was no where to add a KTN. So I thought i’d add it by looking up ticket on frontier website. I tried 3 times with the frontier chat bot to add my KTN it never updated my boarding pass. So then I tried showing up early to do it in person at the airport. The first employee update my ktn in the system and gave me a new boarding pass. I was sent back by tsa to join regular line. Then I was told to add my Ktn. It would cost me $25 extra. Given the length of the cue I did pay. Congratulations! BUT I will NEVER fly frontier again. Plus the plane was very old. It had actual ashtrays and old looking tray backs. Worst travel experience ever. Im warning my friends and family not to use frontier ever.

I did not enjoy the trip home on Frontier for several reasons: there is too much cost besides the flight, which was more than I would normally pay, then having to pay for luggage, and carry-on, seat (if you want to reserve when booking) then you must pay over $3 for a can of soda, and $4 for a snack. A cup of water is free.

Did not realize seats did not recline. Best to travel in an exit row... No question

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

Book cheap flights from St. Louis to District of Columbia

Recent round-trip flight deals

7/15Mon
1 stopFrontier
15h 18mSTL-DCA
7/22Mon
1 stopFrontier
20h 48mDCA-STL
$145
7/10Wed
1 stopFrontier
15h 07mSTL-DCA
7/16Tue
1 stopFrontier
27h 25mDCA-STL
$153
7/4Thu
nonstopAmerican Airlines
2h 02mSTL-DCA
7/9Tue
nonstopAmerican Airlines
2h 29mDCA-STL
$179
7/1Mon
1 stopDelta
5h 21mSTL-DCA
7/5Fri
1 stopDelta
5h 12mDCA-STL
$188
7/4Thu
nonstopAmerican Airlines
2h 02mSTL-DCA
7/8Mon
nonstopAmerican Airlines
2h 29mDCA-STL
$189
7/4Thu
1 stopDelta
4h 38mSTL-DCA
7/9Tue
1 stopDelta
4h 02mDCA-STL
$198
8/6Tue
nonstopUnited Airlines
2h 10mSTL-IAD
8/15Thu
1 stopUnited Airlines
6h 47mIAD-STL
$209
9/11Wed
nonstopUnited Airlines
2h 08mSTL-IAD
9/17Tue
1 stopUnited Airlines
4h 01mIAD-STL
$219
7/18Thu
2 stops
7h 35mSTL-IAD
7/22Mon
3 stops
21h 31mIAD-STL
$299
8/6Tue
3 stops
24h 09mSTL-IAD
8/15Thu
3 stops
23h 57mIAD-STL
$349

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Recent one-way flight deals

7/10Wed
1 stopFrontier
15h 07mSTL-DCA
$76
7/1Mon
nonstopAmerican Airlines
2h 02mSTL-DCA
$85
7/1Mon
1 stopUnited Airlines
4h 03mSTL-DCA
$94
7/9Tue
1 stopDelta
6h 30mSTL-DCA
$104
7/25Thu
1 stopDelta
7h 09mSTL-IAD
$114
7/1Mon
nonstopUnited Airlines
2h 10mSTL-IAD
$120
7/8Mon
1 stopSun Country Air
26h 57mSTL-IAD
$138
9/11Wed
3 stops
22h 23mSTL-IAD
$141
6/21Fri
1 stopSun Country Air
15h 14mSTL-IAD
$143
7/25Thu
2 stops
7h 35mSTL-IAD
$148

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Last minute flights from St. Louis to District of Columbia

Last minute flight, train and bus deals

6/20Thu
multi-stopFrontier
25h 37mSTL-DCA
6/23Sun
multi-stopFrontier
8h 37mDCA-STL
$276
6/21Fri
multi-stopFrontier
17h 29mSTL-DCA
6/23Sun
multi-stopFrontier
8h 37mDCA-STL
$282
6/21Fri
multi-stop
15h 14mSTL-IAD
6/24Mon
multi-stop
30h 58mIAD-STL
$435
6/21Fri
multi-stop
15h 14mSTL-IAD
6/24Mon
multi-stop
26h 28mIAD-STL
$448
6/19Wed
nonstopAmerican Airlines
2h 01mSTL-DCA
6/26Wed
nonstopAmerican Airlines
2h 23mDCA-STL
$535
6/19Wed
nonstopUnited Airlines
2h 10mSTL-IAD
6/25Tue
nonstopUnited Airlines
2h 24mIAD-STL
$535
6/19Wed
nonstopAmerican Airlines
2h 09mSTL-DCA
6/23Sun
nonstopAmerican Airlines
2h 28mDCA-STL
$542
6/19Wed
multi-stopUnited Airlines
4h 16mSTL-IAD
6/25Tue
nonstopUnited Airlines
2h 24mIAD-STL
$545
6/19Wed
multi-stopDelta
5h 50mSTL-IAD
6/26Wed
multi-stopDelta
4h 45mIAD-STL
$554
6/21Fri
multi-stopDelta
3h 48mSTL-IAD
6/24Mon
multi-stopDelta
5h 19mIAD-STL
$593

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St. Louis - District of Columbia Flights

Departure:

St. Louis (STL)United States

Return flight deals:

District of Columbia - St. Louis

Cabin classes:

$618
$839
$1,216
$199