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Find cheap flights from St. Louis to Washington from $59

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 departing on 6/12. 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
Thu 6/27
Thu 7/4

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Best Washington Flight Deals

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

Seattle
Seattle1 stop$131
Spokane
Spokane1 stop$302
Pasco
Pasco2 stops$376
Portland
Portland1 stop$152

Good to know

Low season

January

High season

July

Cheapest flight

$59
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 22% increase in price.
Flight from St. Louis to Portland

FAQs - booking Washington flights

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

    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.

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

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

    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 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?

    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 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 Washington

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Seattle $199 one-way - $398 round-trip
  • Morning departure is around 33% cheaper 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 Washington

 
Need help choosing which airline to fly with from St. Louis to Washington? 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 10502 reviews
8.2Boarding
8.6Crew
7.9Comfort
7.4Food
8.0Entertainment
Airline reviews

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

10.0 ExcellentDonald, May 2024FLL - SEA
Read more about Delta reviews

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

Delta is one of the best airlines I have flown

Flight delayed about 2 hrs so it made it a VERY late night

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

AA1537 the AC was not working properly. It was very hot and uncomfortable.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Was lucky to have a employee at the AA checkin counter that had compassion and understood they ordeal that we went through with our original flight being diverted, needing to stay in the aircraft and then flying to the original destination; adding hours to the trip and forcing us to miss our connection and our rebooked connection. She was able to get up on standby on the highest priority on the next flight to the closest airport we need to be at and it all worked out despite being many hours late.

Delayed so that missed connecting flight. Connecting flight was also delayed on the tarmac but they closed the gate before the rescheduled time.

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Took off over an hour late with multiple mechanical issues. Gate agent in Dallas was lazy and was slow as molasses. Had a line 10 people long. Spirit bad..

No food not even water offered unless you buy it and no usb in the seat but other than that everything was good

Because our flight from marsh Harbor to Fort Lauderdale was over three hours delayed it caused us to miss our flight in Fort Lauderdale. Because we missed that flight, it cost us nearly $100 apiece for four different travelers which totaled nearly $400. We are seeking a reimbursement for the flight that we missed in Fort Lauderdale Florida.

Flight expected to leave at 6:40 pm ended leaving at 8:00 am the following day. I slept in a cold airport. Never again Spirit for me…

The flight was on time and nice as always for me with spirit but the cabin crew were not good. They left the lights on on a red eye for the entire flight.

This was the return leg of my journey with Spirit Airlines. Despite its reputation, I found no issues as it got me from point A to B safely and without delay, especially with no mechanical delays, which is fantastic in my book! The staff, from ground crew to cabin crew, were all pleasant and hassle-free. The flight was smooth from takeoff to landing. I have absolutely no complaints about this no-frills airline!

I got a one-way, last-minute nonstop flight from PDX to BWI for only $125. Yes, I got nicked $79 more for a checked suitcase and $89 more for the BIG SEAT option, but it was worth it, even with $4.50 for coffee and $10 for a snack (the latter no different than any other airline). The grand total was still less flying on any other airline.

It was the worst ever, i will be filing a lawsuit to get a refund. Our flight was delayed 4 hours so we would miss our connecting flight, we were not rebooked to our destination the same day, we were not offered any options to get home on the same day despite being clear that we absolutely cannot get stranded at night due to family, we were forced to book our own flights on a different airline to get home, and spririt is refusing a refund because our flight wasn't cancelled, only delayed. oh yeah, and they lost our luggage on the first part of the trip and you cannot get a hold of customer service when anything goes wrong, on hold for 30+ minutes. and their app breaks so you can't use that either.

This recognisable no-frills airline gets me from point-A to point-B. I was able to get to Chicago without stress. The checked baggage collection and reclaim could be improved.

The crew was the best and very accommodating I know you don't offer any complimentary items but water and coffee will not break the bank !!

My flight was cancelled!!! I had to spend 200.00 on another flight!!

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

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

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

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

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Check in online was easy. Seats aren’t very comfortable

Book cheap flights from St. Louis to Washington

Recent round-trip flight deals

9/10Tue
1 stopSpirit Airlines
14h 21mSTL-SEA
9/16Mon
1 stopSpirit Airlines
16h 29mSEA-STL
$131
8/20Tue
1 stopSpirit Airlines
14h 21mSTL-SEA
8/27Tue
1 stopSpirit Airlines
11h 34mSEA-STL
$136
9/13Fri
1 stopFrontier
12h 25mSTL-PDX
9/16Mon
1 stopFrontier
9h 02mPDX-STL
$180
9/12Thu
1 stopFrontier
22h 25mSTL-PDX
9/16Mon
1 stopFrontier
15h 48mPDX-STL
$181
11/9Sat
1 stopAmerican Airlines
7h 18mSTL-PDX
11/16Sat
1 stopAmerican Airlines
6h 21mPDX-STL
$196
9/25Wed
1 stopAmerican Airlines
9h 21mSTL-SEA
10/7Mon
1 stopAmerican Airlines
8h 05mSEA-STL
$210
8/17Sat
1 stopDelta
6h 33mSTL-SEA
8/23Fri
1 stopDelta
7h 58mSEA-STL
$221
9/5Thu
1 stopDelta
8h 46mSTL-PDX
10/24Thu
1 stopDelta
5h 09mPDX-STL
$234
8/20Tue
1 stopUnited Airlines
8h 04mSTL-SEA
8/27Tue
2 stopsUnited Airlines
9h 43mSEA-STL
$311
7/1Mon
1 stopUnited Airlines
22h 13mSTL-PSC
7/6Sat
1 stopUnited Airlines
14h 50mPSC-STL
$581

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Recent one-way flight deals

6/12Wed
1 stopSpirit Airlines
12h 13mSTL-PDX
$59
8/7Wed
1 stopSpirit Airlines
9h 39mSTL-PDX
$73
6/3Mon
1 stopFrontier
13h 34mSTL-SEA
$95
6/15Sat
1 stopFrontier
12h 42mSTL-PDX
$96
9/30Mon
1 stopAmerican Airlines
9h 49mSTL-SEA
$112
6/17Mon
1 stopDelta
7h 59mSTL-SEA
$113
6/4Tue
1 stopAmerican Airlines
8h 21mSTL-SEA
$137
8/15Thu
1 stopUnited Airlines
5h 38mSTL-GEG
$171
7/28Sun
1 stopDelta
7h 05mSTL-GEG
$183
8/13Tue
2 stopsUnited Airlines
16h 43mSTL-SEA
$282

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Last minute flights from St. Louis to Washington

Last minute flight, train and bus deals

5/29Wed
multi-stopFrontier
12h 44mSTL-PDX
6/3Mon
multi-stopFrontier
10h 34mPDX-STL
$180
6/1Sat
multi-stop
19h 23mSTL-SEA
6/6Thu
multi-stop
14h 44mSEA-STL
$186
6/1Sat
multi-stopAmerican Airlines
7h 38mSTL-PDX
6/3Mon
multi-stopAmerican Airlines
9h 58mPDX-STL
$198
5/29Wed
multi-stopAmerican Airlines
8h 21mSTL-SEA
6/3Mon
multi-stopAmerican Airlines
7h 22mSEA-STL
$275
5/30Thu
multi-stopDelta
7h 09mSTL-SEA
5/31Fri
multi-stopDelta
8h 30mSEA-STL
$276
6/2Sun
multi-stopUnited Airlines
6h 52mSTL-SEA
6/4Tue
multi-stopUnited Airlines
9h 10mSEA-STL
$321
5/29Wed
multi-stopUnited Airlines
11h 33mSTL-PDX
6/4Tue
multi-stopUnited Airlines
8h 06mPDX-STL
$333
5/31Fri
multi-stopDelta
7h 09mSTL-SEA
6/3Mon
multi-stopDelta
8h 30mSEA-STL
$357
6/1Sat
multi-stopSpirit Airlines
25h 26mSTL-PDX
6/7Fri
multi-stopSpirit Airlines
15h 35mPDX-STL
$458
6/2Sun
multi-stopSpirit Airlines
28h 10mSTL-SEA
6/4Tue
multi-stopSpirit Airlines
13h 25mSEA-STL
$464

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St. Louis - Washington Flights

Departure:

St. Louis (STL)United States

Return flight deals:

Washington - St. Louis

Cabin classes:

$936
$2,272
$1,146
$276