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Dulles Intl

$139+ Cheap flights from Missoula (MSO) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — IAD
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Missoula to Dulles Intl

Cheapest flights from Missoula to Dulles Intl
Explore the most affordable flight options available from Missoula to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/241:16 pm
MSO
-
IAD
1 stop8h 30m
Delta
Mon 3/22:17 pm
IAD
-
MSO
1 stop7h 44m
Delta
Deal found 1/26$319
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/142:44 pm
MSO
-
IAD
1 stop8h 24m
United Airlines
Wed 2/183:58 pm
IAD
-
MSO
1 stop7h 59m
United Airlines
Deal found 1/24$367
This Alaska Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:55 pm
MSO
-
IAD
1 stop11h 55m
Alaska Airlines
Thu 4/307:10 am
IAD
-
MSO
1 stop9h 49m
Alaska Airlines
Deal found 1/26$387
This Delta deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:04 pm
MSO
-
IAD
2 stops13h 06m
Delta
Tue 4/147:20 am
IAD
-
MSO
1 stop18h 56m
Delta
Deal found 1/25$402
This Expedia deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:23 am
MSO
-
IAD
1 stop8h 57m
Alaska Airlines
Sun 3/16:20 pm
IAD
-
MSO
2 stops31h 39m
Alaska Airlines
Deal found 1/25$405
This Alaska Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:53 pm
MSO
-
IAD
1 stop8h 06m
Alaska Airlines
Thu 9/36:30 am
IAD
-
MSO
1 stop8h 02m
Alaska Airlines
Deal found 1/26$411
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:16 pm
MSO
-
IAD
1 stop8h 30m
Delta
Sat 2/2112:38 pm
IAD
-
MSO
2 stops9h 23m
Delta
Deal found 1/26$425

Find flight deals from Missoula to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Missoula (MSO) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(Alaska Airlines)

One-way from

$139
(Expedia)

Popular in

March

Cheapest in

June

Average price

$495
Provider with most accurate pricing for Missoula Johnson-Bell Field-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Missoula Johnson-Bell Field-Washington, D.C. Dulles Intl flights.
Search Deals
From Missoula Johnson-Bell Field to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Missoula Johnson-Bell Field to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($191 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missoula to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from Missoula to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Missoula

Fly to

Dulles Intl

Route

Depart

Return

Price

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Thu 2/19

2:34 pm-11:19 pm

1 stop6h 45m

Washington, D.C. Dulles Intl

Sat 2/21

2:12 pm-9:57 pm

1 stop9h 45m

$319

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Tue 2/24

6:10 pm-9:13 am

2 stops13h 03m

Washington, D.C. Dulles Intl

Mon 3/2

2:17 pm-8:01 pm

1 stop7h 44m

$324

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Sat 2/14

2:44 pm-1:08 am

1 stop8h 24m

Washington, D.C. Dulles Intl

Wed 2/18

3:58 pm-9:57 pm

1 stop7h 59m

$367

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Wed 4/8

6:04 pm-9:10 am

2 stops13h 06m

Washington, D.C. Dulles Intl

Tue 4/14

6:00 am-12:16 am

2 stops20h 16m

$408

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Wed 5/13

7:55 pm-7:34 am

1 stop9h 39m

Washington, D.C. Dulles Intl

Thu 9/3

6:30 am-12:32 pm

1 stop8h 02m

$411

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Thu 2/19

1:16 pm-11:46 pm

1 stop8h 30m

Washington, D.C. Dulles Intl

Sat 2/21

12:38 pm-8:01 pm

2 stops9h 23m

$425

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Sun 4/26

3:55 pm-5:50 am

1 stop11h 55m

Washington, D.C. Dulles Intl

Thu 4/30

6:47 pm-2:59 pm

2 stops22h 12m

$433

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Wed 7/22

6:36 pm-7:32 am

1 stop10h 56m

Washington, D.C. Dulles Intl

Mon 7/27

6:55 pm-12:19 pm

1 stop19h 24m

$466

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Wed 3/4

6:23 am-5:20 pm

1 stop8h 57m

$139

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Sun 5/31

7:55 pm-7:34 am

1 stop9h 39m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 16 results
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Compare providers for flights from Missoula to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Missoula to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Missoula-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Missoula-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Missoula-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Missoula-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Missoula-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Missoula to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Missoula with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missoula to Washington, D.C. Dulles Intl Airport

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

Currently, July is the cheapest month in which you can book a flight from Missoula to Washington, D.C. Dulles Intl Airport (average of $310). Flying from Missoula to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $1,161). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated January 26, 2026.
Read through reviews of airlines operating flights from Missoula to Washington, D.C. Dulles Intl Airport, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,792 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,792 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,113 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,199 reviews
Alaska Airlines
8.0
Very good
11,792 reviews

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Related info for your journey

Find useful and relevant information for your journey from Missoula to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Missoula to Washington, D.C. Dulles Intl?

    Missoula Johnson-Bell Field (MSO), located 5.5 mi from the city center, is the airport you fly out of when you book flights from Missoula to Washington, D.C. Dulles Intl. 3 airlines have flights from Johnson-Bell Field to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Missoula Johnson-Bell Field to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

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

    Airlines like United Airlines and Delta fly from Missoula to Washington, D.C. Dulles Intl Airport in about 6h 45m. The time it takes to get you to your destination can typically vary by up to 6h 18m. Missoula and Washington, D.C. Dulles Intl Airport are separated by a distance of 1913 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Missoula to Washington, D.C. Dulles Intl Airport round-trip?

    Delta, at $338, was found to be the cheapest airline from Missoula to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include United Airlines and Alaska Airlines. Delta is currently priced 36% below the average price you’ll pay for this route.

  • Can I find deals for flights from Missoula to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Missoula to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missoula to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missoula to Dulles Intl.

  • Can I find deals for business class flights from Missoula to Dulles Intl?

    Yes. Cheapflights offers flight deals from Missoula to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, July is the cheapest month in which you can book a flight from Missoula to Washington, D.C. Dulles Intl Airport (average of $310). Flying from Missoula to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $1,161). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Missoula to Dulles Intl

Discover the top 3 airlines that operate flights from Missoula to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$338Average$410FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$360Average$493FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$385Average$495FlexibilityNo cancel feeOn-time75%

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