MSO - IAD

$184 Find Cheap Flights from Missoula to Washington Dulles Airport

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 3/24. 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 Washington, D.C. Dulles Intl Airport

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

Cheapest round-trip
$321
Overall average: $473
Delta
Tue 2/24Tue 3/3
MSO - IAD • 1 stop
Cheapest one-way
$184
United Airlines
Tue 3/24
MSO - IAD • 1 stop
Top airlines
Delta
Cheapest • from $321 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
June
Cheapest • 36% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Tue, Feb 24 - Tue, Mar 3
Delta Logo
1:16 pm - 11:46 pm
MSO
-
IAD
8h 30m
1 stop
Delta Logo
7:05 am - 12:26 pm
IAD
-
MSO
7h 21m
1 stop
$321Delta
Tue, Feb 24 - Tue, Mar 3
Delta Logo
6:10 pm - 9:13 am
MSO
-
IAD
13h 03m
2 stops
Delta Logo
7:05 am - 12:26 pm
IAD
-
MSO
7h 21m
1 stop
$326Delta
Tue, Feb 24 - Tue, Mar 3
Delta Logo
6:10 pm - 9:13 am
MSO
-
IAD
13h 03m
2 stops
Delta Logo
10:08 am - 8:01 pm
IAD
-
MSO
11h 53m
2 stops
$332Delta
Tue, Feb 24 - Mon, Mar 9
Delta Logo
1:16 pm - 11:46 pm
MSO
-
IAD
8h 30m
1 stop
Delta Logo
2:15 pm - 8:02 pm
IAD
-
MSO
7h 47m
1 stop
$341Delta
Tue, Feb 24 - Sun, Mar 1
Alaska Airlines Logo
6:23 am - 5:20 pm
MSO
-
IAD
8h 57m
1 stop
Alaska Airlines Logo
6:27 pm - 12:21 pm
IAD
-
MSO
19h 54m
1 stop
$345Alaska Airlines
Tue, Feb 24 - Mon, Mar 9
Delta Logo
6:10 pm - 9:13 am
MSO
-
IAD
13h 03m
2 stops
Delta Logo
2:15 pm - 8:02 pm
IAD
-
MSO
7h 47m
1 stop
$346Delta
Tue, Feb 24 - Mon, Mar 9
Delta Logo
6:10 pm - 9:13 am
MSO
-
IAD
13h 03m
2 stops
Delta Logo
5:32 pm - 12:24 am
IAD
-
MSO
8h 52m
2 stops
$352Delta
Thu, Feb 26 - Mon, Mar 9
Delta Logo
1:16 pm - 11:46 pm
MSO
-
IAD
8h 30m
1 stop
Delta Logo
2:15 pm - 8:02 pm
IAD
-
MSO
7h 47m
1 stop
$361Delta
Thu, Feb 26 - Mon, Mar 9
Delta Logo
1:16 pm - 11:46 pm
MSO
-
IAD
8h 30m
1 stop
Delta Logo
5:32 pm - 12:24 am
IAD
-
MSO
8h 52m
2 stops
$366Delta
Wed, Feb 25 - Tue, Mar 3
Delta Logo
1:16 pm - 11:44 am
MSO
-
IAD
20h 28m
2 stops
Delta Logo
10:08 am - 8:01 pm
IAD
-
MSO
11h 53m
2 stops
$369Delta
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 June, where tickets cost $339 (return) on average. On the other hand, the most expensive months are March and October, where the average cost of round-trip tickets is $1,161 and $635 respectively.

Good to know

Low seasonMarch
Cheapest flight$184
Best time to beat the crowds but there is an average 118% increase in price.
Most popular time to fly and prices are also 19% 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 3 days, the lowest price for a flight from Missoula to Washington, D.C. Dulles Intl Airport was $184 for a one-way ticket and $321 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?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Missoula and Washington Dulles Airport, with oneworld 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 $495 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $410 and an overall rating of 7.9.

  • 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.
8.0
Alaska AirlinesOverall score based on 11808 reviews
8.1Boarding
7.0Entertainment
7.1Food
7.8Comfort
8.5Crew
Airline reviews

Departed on time and had an efficient boarding process. The inflight wifi was not working on one of the flights.

10.0 ExcellentAnonymous, Jan 2026
SEA - DCA
Read more Alaska Airlines reviews

Departed on time and had an efficient boarding process. The inflight wifi was not working on one of the flights.

No communication with delayed and canceled flights. Completely in the dark for the whole experience.

Honestly the bathroom cabinet under sink fell out and was completely broken. The floor or walkway was worn out and it smelled wierd. But the seats were terrible for comfort. I truly hope that my trip home in February is better.

We sat on the tarmac for so long when we got to SeaTac that half the plane missed their connections.

Poor, no one with Alaska Airlines is in a hurry to do anything. Slow, lack of intent, inconsistent.

The flights were all late and they would not refund my money

Comfort level was below par. Food selection was non-existent. Paying $35 for 1st bag is never appreciated. I will not fly them again. I am actually trying to change my return flight.

I liked that the crew was friendly, we left and arrived at near scheduled times, plenty of on-board crew to handle the cabin service for the flight and I found the price of my airline ticket to be excellent!

Had no way to see what gate came in on or what gate connecting flight would take off.

The small ej plane didn’t have any entertainment aside from the stuff on the Alaska website that has to be accessed from your own device. But everything else was just great.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Connection through Atlanta was difficult. Mechanical issue on plane caused a two hour delay. New gate was a mile away.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

The seats were comfortable and we had leg room. Great entertainment.

The flight crew where really good. Better then the crew from BNE to SFO

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

l really enjoy very much the flight was very pleasant

The flight was delayed for 1:30 hours for maintenance issues. They should give more information about connecting flights. For a Business Cabin the Crew was mediocre.

The food is terrible. The same pasta or chicken with bad taste and presentation

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

Information on your arrival and departure airports