MSO - IAD

$185 Find Cheap Flights from Missoula to Washington Dulles Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Missoula to Dulles Intl departing on 8/25. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$359
Typical prices: $575-$635
Delta
Thu 10/1Wed 10/7
MSO - IAD • 1 stop
Cheapest one-way
$185
Delta
Tue 8/25
MSO - IAD • 2 stops
Top airlines
Cheapest • from $359 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Missoula and Dulles Intl. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $388 (round-trip)
Shortest trip • 6h 48m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 37% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Missoula to Dulles Intl (MSO-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missoula to Dulles Intl 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 Missoula to Dulles Intl

Thu, Oct 1 - Wed, Oct 7
Delta Logo
3:35 pm - 11:23 pm
MSO
-
IAD
5h 48m
1 stop
Delta Logo
6:13 am - 12:34 pm
IAD
-
MSO
8h 21m
1 stop
$359Delta
Wed, Jan 13 - Sat, Jan 16
Alaska Airlines Logo
6:40 am - 4:26 pm
MSO
-
IAD
7h 46m
1 stop
Alaska Airlines Logo
5:38 pm - 11:59 pm
IAD
-
MSO
8h 21m
1 stop
$359Alaska Airlines
Wed, Sep 16 - Tue, Sep 22
Delta Logo
6:17 pm - 9:09 am
MSO
-
IAD
12h 52m
2 stops
Delta Logo
6:47 pm - 11:42 pm
IAD
-
MSO
6h 55m
1 stop
$384Delta
Wed, Sep 2 - Wed, Sep 9
Delta Logo
3:36 pm - 11:21 pm
MSO
-
IAD
5h 45m
1 stop
Delta Logo
7:00 am - 12:37 pm
IAD
-
MSO
7h 37m
1 stop
$384Delta
Thu, Sep 3 - Mon, Sep 7
American Airlines Logo
1:25 pm - 10:52 pm
MSO
-
IAD
7h 27m
1 stop
American Airlines Logo
6:09 am - 12:35 pm
IAD
-
MSO
8h 26m
1 stop
$394American Airlines
Wed, Jan 13 - Sat, Jan 16
Alaska Airlines Logo
6:40 am - 4:26 pm
MSO
-
IAD
7h 46m
1 stop
Alaska Airlines Logo
5:38 pm - 11:59 pm
IAD
-
MSO
8h 21m
1 stop
$394Alaska Airlines
Wed, Oct 14 - Sat, Oct 17
American Airlines Logo
1:05 pm - 11:23 pm
MSO
-
IAD
8h 18m
1 stop
American Airlines Logo
6:42 am - 1:15 pm
IAD
-
MSO
8h 33m
1 stop
$429American Airlines
Thu, Sep 3 - Wed, Sep 9
Alaska Airlines Logo
4:16 pm - 5:40 am
MSO
-
IAD
11h 24m
1 stop
Alaska Airlines Logo
9:03 am - 3:17 pm
IAD
-
MSO
8h 14m
1 stop
$444Alaska Airlines
Tue, Oct 13 - Fri, Oct 16
United Airlines Logo
12:21 pm - 10:52 pm
MSO
-
IAD
8h 31m
1 stop
United Airlines Logo
6:10 am - 11:24 am
IAD
-
MSO
7h 14m
1 stop
$598United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
6:15 am - 9:18 pm
MSO
-
IAD
13h 03m
2 stops
United Airlines Logo
6:15 am - 11:42 am
IAD
-
MSO
7h 27m
1 stop
$615United Airlines
Booking Insights

KAYAK's insights & trends for Missoula to Dulles Intl flights

Get data-powered insights and trends into flights from Missoula to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Missoula to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Missoula to Washington, D.C. Dulles Intl Airport, 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 Missoula to Washington, D.C. Dulles Intl Airport is July, where tickets cost $360 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $1,161 and $727 respectively.

Good to know

Low season

March

Cheapest flight

$185
Best time to beat the crowds but there is an average 102% increase in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Missoula to Washington Dulles Airport

When to book flights from Missoula to Dulles Intl

Are your dates flexible? Find out the best times to travel from Missoula to Dulles Intl 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 Missoula to Washington Dulles Airport flights

  • What is the cheapest flight from Missoula to Washington, D.C. Dulles Intl Airport?

    In the last 5 days, the lowest price for a flight from Missoula to Washington, D.C. Dulles Intl Airport was $185 for a one-way ticket and $359 for a round-trip.

  • Do I need a passport to fly between Missoula and Washington Dulles Airport?

    A passport is not required to fly from Missoula to Washington Dulles Airport.

  • Which aircraft models fly most regularly from Missoula to Washington Dulles Airport?

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

  • Which airline alliances offer flights from Missoula to Washington Dulles Airport?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Missoula and Washington Dulles Airport, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Missoula to Washington, D.C., Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Missoula to Washington, D.C. are Alaska Airlines and Delta. With an average price for the route of $484 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $496 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Missoula to Washington Dulles Airport?

    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 Missoula to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missoula to Washington Dulles Airport?

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

    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 Dulles Airport with an airline and back to Missoula with another airline. Booking your flights between Missoula and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missoula to Washington Dulles Airport?

    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 Dulles Airport from Missoula up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Missoula to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Missoula 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 Missoula to Dulles Intl? 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.
7.9
Alaska AirlinesOverall score based on 12739 reviews
7.0Food
8.5Crew
8.1Boarding
7.0Entertainment
7.8Comfort
Airline reviews

Baggage pickup in Seattle took over an hour. We were told one, then moved to another, and then back to the original. What should have taken 15 minutes took over an hour. When waiting to board our flight in Seattle to return to DC, we were sent to 4 different gates before finding the right gate. I have walked every inch of Sea-Tac Airport. The actual flights were great. The rest, not so good. "Ain't no way to run a railroad."

10.0 ExcellentMichael, Jul 2026
SEA - IAD
Read more Alaska Airlines reviews

Baggage pickup in Seattle took over an hour. We were told one, then moved to another, and then back to the original. What should have taken 15 minutes took over an hour. When waiting to board our flight in Seattle to return to DC, we were sent to 4 different gates before finding the right gate. I have walked every inch of Sea-Tac Airport. The actual flights were great. The rest, not so good. "Ain't no way to run a railroad."

This was my second time flying Alaska Airline in the 1st Class cabin. Everything was fine with the exception of the food and entertainment. The food was just ok but not what I was expecting from 1st Class. A BBQ pork sandwich and baked potato. There wasnt any in-flight entertainment. I found that odd since it was a coast to coast flight Seattle to Dulles. My sister flew 1st Class on Delta on a shorter flight ( Seattle to Cincinnati) and had an awesome meal and in-flight entertainment. I typically fly Delta but there wasn’t a flight with times that fit my schedule. I am by no means a primary donna. But when my upgrade cost over $900…I didn’t use any reward miles…I was expecting more than what I got. I will never fly Alaska Airline 1st Class again. I will stick with Delta for all my travel needs whether it’s in 1st Class or coach.

Very easy, stress free airline. Was a wonderful experience. Will use again

Seattle airport terminal was a nightmare to navigate. Coming g off a cruise boat etc. Lack of convient Restrooms a major issue. Once able to get to boarding Alaska Air it was good experience.

Appreciated the upgrade on the saver ticket. Made the 5 hour flight bearable.

There was no sitting place in Sea-Tac airport. Even airline didn’t provide any food or dinner. I will never take this airline in my future travel.

Crew was very rude and uncaring. When someone tried to place their bag in overhead bin and they asked for help, crew told them they could not assist. Crew member then told the customer if they couldn’t place into overhead bin on their own, they should have checked in bag. When other customer helped to place the bag in the overhead bin, they were given evil look by crew member and told to hurry back to their uncomfortable middle seat. This was despite the fact that the plane did not leave until 30 minutes later. The flight was ~80% full; when final people boarded, they were forced into middle seats with no room for comfort. There were a handful of emergency row seats unoccupied. When asked if any of the emergency row seats may be used, the crew said that they would cost extra. Normally if a flight is completely boarded and there are open seats, the crew at least gives thought to asking someone if they want to re-locate to the more comfortable seat, especially on a long flight.

Great flight, no bumps to speak of, pleasant crew, good inflight entertainment choices

6 hour flight from Seattle to Dulles airport without any WiFi and movies, as well as now snacks is crazy. We were told no WiFi and entertainment 5 hours before departure.

More leg room in back seats. Can you require people to smell good on planes? ha ha Staff was great! Plane was comfortable. I enjoyed the movies and TV. Smooth take off and landing.

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

Chaotic boarding at these gates, multiple gates squeezed in at the very end of a concourse, behind a restaurant. Agents gave up on boarding by individual zones. Flight itself was uneventful, which is all we hope for any more.

Flight delayed due to ground hold. Republic airways did a great job.

The flight was smooth, the crew was great but the plane was quite old

Flight was warm for first few hours and quite rough

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

Nothing unusual. It was fine. I hate having to pay extra for my seat.

1st flight had mechanical issues after we boarded and almost took off. They tried to fix on runway but couldn’t do we went back to the gate. They couldn’t fix it there either. So we had to deplane and board another plane 2 hrs later. All in all our flight was delayed 4 hrs so we had to cancel some business meeting we had in London for the morning since we were supposed to arrive at 7am and did not arrive until 11:45am. Also, the 2nd plane had mechanical issues as well but fortunately they were able to fix on runway.

Didn’t make the flight. My connecting flight was an hour late and I missed the flight. You rerouted me thru Atlanta and I arrived in Rome over 10 hour after my original Rome arrival time. You also left my luggage in Atlanta and it took you three day to get my bag to meI spent 4 days in the same cloths, I had packed my prescriptions in the lost bag and went 3 days withoutMy heart meds.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

It was terribly delayed with zero support from united airlines. I reached at 1 am in the night. They did not provide any option to change the flights.

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Everything you need to know for your flight from Missoula to Dulles Intl

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