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$141+ Cheap flights from Dulles Intl (IAD) to Montana

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BZN
May 18 — May 251
Mon 5/18
Mon 5/25
1 adult, Economy
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Cheap flight deals from Dulles Intl to Montana

Cheapest flights from Dulles Intl to Montana
Explore the most affordable flight options available from Dulles Intl to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.

This Delta deal was found by Cheapflights users on 4/15. 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.
Fri 5/296:00 am
IAD
-
FCA
1 stop9h 33m
Delta
Wed 6/31:20 pm
FCA
-
IAD
1 stop8h 12m
Delta
Deal found 4/15$309
This Delta deal was found by Cheapflights users on 4/15. 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 6/312:40 pm
IAD
-
FCA
2 stops12h 34m
Delta
Tue 6/93:33 pm
FCA
-
IAD
1 stop5h 47m
Delta
Deal found 4/15$314
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Thu 5/285:35 pm
IAD
-
FCA
1 stop8h 23m
Alaska Airlines
Tue 6/211:33 am
FCA
-
IAD
1 stop10h 26m
Alaska Airlines
Deal found 4/15$334
This Delta deal was found by Cheapflights users on 4/18. 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 6/311:15 am
IAD
-
FCA
2 stops13h 59m
Delta
Thu 6/113:33 pm
FCA
-
IAD
1 stop5h 47m
Delta
Deal found 4/18$339
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 5/266:30 am
IAD
-
GTF
1 stop9h 11m
United Airlines
Sat 5/3012:30 pm
GTF
-
IAD
1 stop6h 52m
United Airlines
Deal found 4/15$346
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/611:07 am
IAD
-
BIL
2 stops31h 38m
Multiple Airlines
Mon 6/1510:00 am
BIL
-
IAD
1 stop20h 25m
Multiple Airlines
Deal found 4/17$347
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:53 pm
IAD
-
BIL
1 stop9h 51m
American Airlines
Wed 9/97:00 am
BIL
-
IAD
1 stop8h 54m
American Airlines
Deal found 4/14$351
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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 6/36:00 am
IAD
-
GTF
1 stop14h 12m
Alaska Airlines
Mon 6/86:52 pm
GTF
-
IAD
1 stop10h 42m
Alaska Airlines
Deal found 4/16$352
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:46 pm
IAD
-
BIL
1 stop9h 55m
American Airlines
Tue 9/151:13 pm
BIL
-
IAD
2 stops8h 38m
American Airlines
Deal found 4/14$356
This Delta deal was found by Cheapflights users on 4/16. 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 6/37:30 am
IAD
-
GTF
1 stop6h 57m
Delta
Mon 6/86:35 pm
GTF
-
IAD
2 stops13h 45m
Delta
Deal found 4/16$358
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 11/89:00 am
IAD
-
FCA
1 stop8h 35m
Alaska Airlines
Sun 11/152:10 pm
FCA
-
IAD
1 stop7h 49m
Alaska Airlines
Deal found 4/17$359
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:10 am
IAD
-
BIL
1 stop8h 31m
American Airlines
Sat 9/127:00 am
BIL
-
IAD
1 stop8h 54m
American Airlines
Deal found 4/14$360

Find flight deals from Dulles Intl to Montana

Keep the following information in mind while searching for Dulles Intl to Montana flight deals. Data was last updated April 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(Delta)

One-way from

$141
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$403

Good round-trip deal

$518 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Bozeman Gallatin Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Bozeman Gallatin Field flights.
Search Deals
From Washington, D.C. Dulles Intl to Montana
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Montana
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Montana.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Montana 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 April 18, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Montana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Fri 5/8

5:20 pm-10:45 pm

1 stop7h 25m

Billings Logan Intl

Sun 5/10

5:05 am-1:21 pm

1 stop6h 16m

$369

Washington, D.C.Missoula

IAD - MSO

IADMSO

Washington, D.C. Dulles Intl

Sat 8/29

7:00 am-3:17 pm

1 stop10h 17m

Missoula Johnson-Bell Field

Wed 9/9

4:13 pm-5:40 am

1 stop11h 27m

$369

Washington, D.C.Billings

IAD - BIL

IADBIL

Washington, D.C. Dulles Intl

Tue 7/7

5:41 pm-10:51 pm

1 stop7h 10m

Billings Logan Intl

Tue 7/14

2:25 pm-12:45 am

1 stop8h 20m

$369

Washington, D.C.Missoula

IAD - MSO

IADMSO

Washington, D.C. Dulles Intl

Sat 8/29

5:15 pm-12:24 am

2 stops9h 09m

Missoula Johnson-Bell Field

Wed 9/9

3:27 pm-11:29 pm

1 stop6h 02m

$374

Washington, D.C.Kalispell

IAD - FCA

IADFCA

Washington, D.C. Dulles Intl

Wed 6/3

11:15 am-11:14 pm

2 stops13h 59m

Kalispell Glacier Park

Tue 6/9

6:55 am-9:04 pm

2 stops12h 09m

$385

Washington, D.C.Missoula

IAD - MSO

IADMSO

Washington, D.C. Dulles Intl

Thu 5/28

6:00 am-2:43 pm

1 stop10h 43m

Missoula Johnson-Bell Field

Sat 5/30

2:03 pm-11:59 pm

1 stop7h 56m

$385

Washington, D.C.Bozeman

IAD - BZN

IADBZN

Washington, D.C. Dulles Intl

Tue 5/26

6:00 am-3:32 pm

1 stop11h 32m

Bozeman Gallatin Field

Sat 6/6

7:59 pm-7:34 am

1 stop9h 35m

$399

Washington, D.C.Missoula

IAD - MSO

IADMSO

Washington, D.C. Dulles Intl

Wed 5/27

6:58 pm-11:40 pm

1 stop6h 42m

Missoula Johnson-Bell Field

Sat 5/30

3:30 pm-11:39 pm

1 stop6h 09m

$403

Washington, D.C.Bozeman

IAD - BZN

IADBZN

Washington, D.C. Dulles Intl

Sat 7/11

3:30 pm-10:43 pm

1 stop9h 13m

Bozeman Gallatin Field

Thu 7/16

4:29 pm-12:45 am

1 stop6h 16m

$411

Washington, D.C.Helena

IAD - HLN

IADHLN

Washington, D.C. Dulles Intl

Thu 4/30

9:00 am-5:45 pm

1 stop10h 45m

Helena

Mon 5/4

6:22 pm-5:50 am

1 stop9h 28m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/18

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Dulles Intl to Montana

Have a flexible travel schedule? Discover the best time to fly to Montana from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Montana

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Montana (average of $145). Flying from Washington, D.C. Dulles Intl Airport to Montana in March is currently the most expensive (average of $328). 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.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Montana?

Reviews of airlines servicing Montana

Get insights into the airlines that provide service to Montana. 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 Montana. Reviews last updated April 18, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Montana to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,330 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,330 reviews
Southwest
8.0
Very good
4,330 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,424 reviews
Southwest
8.0
Very good
4,330 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,605 reviews
Southwest
8.0
Very good
4,330 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,604 reviews
Southwest
8.0
Very good
4,330 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

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

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

    Departing from Washington, D.C. Dulles Intl Airport to Montana will take you 7h 25m. Airlines will cover a distance of 1643 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Montana one-way?

    $115 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $128 and $144, respectively.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Montana?

    Most travelers choose Washington, D.C. Dulles Intl - Bozeman Gallatin Field, Washington, D.C. Dulles Intl - Kalispell Glacier Park or Washington, D.C. Dulles Intl - Missoula Johnson-Bell Field when deciding on the best route from Washington, D.C. Dulles Intl Airport to Montana.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Montana?

    On average you can expect to pay $489 for a flight from Washington, D.C. Dulles Intl Airport to Montana. The cheapest flight overall is $283 while the most popular route, (Washington, D.C. Dulles Intl - Bozeman Gallatin Field) is currently priced at $329.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Montana 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 Washington, D.C. Dulles Intl Airport to Montana?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Montana (average of $145). Flying from Washington, D.C. Dulles Intl Airport to Montana in March is currently the most expensive (average of $328). 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

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Alternative routes for Dulles Intl to Montana

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
Dulles Intl to Seattle flights
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Baltimore to Dallas/Fort Worth flights
Reagan-National to Miami flights
Dulles Intl to Orlando flights
Reagan-National to Seattle flights
Dulles Intl to Miami flights
Baltimore to Miami flights
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Reagan-National to Las Vegas flights
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Baltimore to Las Vegas flights
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Dulles Intl to Denver flights
Reagan-National to Los Angeles flights
Baltimore to Atlanta flights
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Dulles Intl to Hobby flights
Reagan-National to Atlanta flights
Reagan-National to Dallas/Fort Worth flights
Dulles Intl to San Francisco flights
Baltimore to Orlando flights
Reagan-National to Orlando flights
Baltimore to Fort Lauderdale flights
Reagan-National to Hobby flights
Baltimore to Seattle flights
Baltimore to Hobby flights
Reagan-National to San Francisco flights
Dulles Intl to Boston flights
Dulles Intl to Tampa flights
Reagan-National to Boston flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to New Orleans flights
Baltimore to San Francisco flights
Dulles Intl to Fort Lauderdale flights
Reagan-National to George Bush Intcntl flights
Baltimore to Boston flights
Dulles Intl to Midway flights
Baltimore to Midway flights
Baltimore to Tampa flights
Reagan-National to Denver flights
Dulles Intl to San Diego flights
Reagan-National to Nashville flights
Dulles Intl to Sky Harbor Intl flights
Dulles Intl to Nashville flights
Baltimore to Detroit flights

Top 4 airlines flying from Dulles Intl to Montana

Discover the top 4 airlines that operate flights from Dulles Intl to Montana. 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 April 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$196Average$505FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$242Average$370FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$280Average$539FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$384FlexibilityNo cancel feeOn-time71%

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