WAS - WYS

$493 Find Cheap Flights from Washington, D.C. to West Yellowstone

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to West Yellowstone departing on 5/30. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to West Yellowstone

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to West Yellowstone, 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 West Yellowstone, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$493
United Airlines
Sat 5/30Sat 6/6
IAD - WYS • 1 stop
Cheapest one-way
Multiple Airlines
Tue 1/13
WAS - WYS • multi-stop
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We hope you love your trip to West Yellowstone!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to West Yellowstone (WAS-WYS)

 
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 West Yellowstone 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to West Yellowstone

Sat, May 30 - Sat, Jun 6
United Airlines Logo
6:35 am - 1:20 pm
IAD
-
WYS
8h 45m
1 stop
United Airlines Logo
2:02 pm - 12:32 am
WYS
-
IAD
8h 30m
1 stop
$493United Airlines
Fri, May 22 - Tue, May 26
United Airlines Logo
10:00 am - 4:07 pm
BWI
-
WYS
8h 07m
1 stop
United Airlines Logo
2:02 pm - 11:00 pm
WYS
-
BWI
6h 58m
1 stop
$683United Airlines
Sat, May 30 - Sat, Jun 6
United Airlines Logo
6:35 am - 1:20 pm
IAD
-
WYS
8h 45m
1 stop
United Airlines Logo
2:02 pm - 11:20 am
WYS
-
IAD
19h 18m
2 stops
$709United Airlines
Fri, May 22 - Tue, May 26
United Airlines Logo
10:05 pm - 4:07 pm
IAD
-
WYS
20h 02m
2 stops
United Airlines Logo
2:02 pm - 12:32 am
WYS
-
IAD
8h 30m
1 stop
$738United Airlines
Fri, Jun 26 - Mon, Jun 29
United Airlines Logo
6:35 am - 4:07 pm
IAD
-
WYS
11h 32m
1 stop
United Airlines Logo
2:02 pm - 12:32 am
WYS
-
IAD
8h 30m
1 stop
$743United Airlines
Sat, Jun 13 - Sat, Jun 20
United Airlines Logo
7:10 pm - 4:07 pm
BWI
-
WYS
22h 57m
2 stops
United Airlines Logo
5:45 pm - 5:19 am
WYS
-
BWI
9h 34m
1 stop
$747United Airlines
Fri, May 22 - Tue, May 26
United Airlines Logo
10:05 pm - 4:07 pm
IAD
-
WYS
20h 02m
2 stops
United Airlines Logo
2:02 pm - 9:06 pm
WYS
-
IAD
29h 04m
2 stops
$751United Airlines
Sun, Jun 7 - Sat, Jun 13
United Airlines Logo
8:15 am - 1:20 pm
BWI
-
WYS
7h 05m
1 stop
United Airlines Logo
5:45 pm - 11:00 pm
WYS
-
BWI
27h 15m
1 stop
$764United Airlines
Sun, Jun 7 - Sat, Jun 13
Delta Logo
7:10 am - 12:21 pm
BWI
-
WYS
7h 11m
1 stop
Delta Logo
11:29 am - 11:44 pm
WYS
-
BWI
10h 15m
2 stops
$850Delta
Fri, Jun 26 - Mon, Jun 29
Delta Logo
6:00 am - 12:21 pm
IAD
-
WYS
8h 21m
2 stops
Delta Logo
1:09 pm - 12:09 am
WYS
-
IAD
9h 00m
2 stops
$949Delta
Booking Insights

KAYAK's insights & trends for Washington, D.C. to West Yellowstone flights

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

Which airlines fly non-stop between Washington, D.C. and West Yellowstone?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Washington, D.C. to West Yellowstone.

There is just one airline that flies from Washington, D.C. to West Yellowstone direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $601.

Good to know

Cheapest flight$493
Flight from Washington Dulles Airport to West Yellowstone

When to book flights from Washington, D.C. to West Yellowstone

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

  • What is the cheapest flight from Washington, D.C. to West Yellowstone?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to West Yellowstone was $493 for a round-trip ticket.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

    There are 2 airports in Washington, D.C. (Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl.) and only 1 airport in West Yellowstone (West Yellowstone). The cheapest flights are generally found on the Washington Dulles Airport to West Yellowstone flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to West Yellowstone?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to West Yellowstone?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and West Yellowstone.

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

    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 West Yellowstone.

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

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

    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 West Yellowstone 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 West Yellowstone?

    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 West Yellowstone from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Washington, D.C. to West Yellowstone

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to West Yellowstone. 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 Washington, D.C. to West Yellowstone? 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.
7.4
United AirlinesOverall score based on 9149 reviews
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
Airline reviews

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

6.0 GoodKyle, Jan 2026
IAD - MUC
Read more United Airlines reviews

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Everything you need to know for your flight from Washington, D.C. to West Yellowstone

Information on your arrival and departure airports