HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Montana

$138+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BZN
Jun 24 — Jul 11
Wed 6/24
Wed 7/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Montana with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 25, 2026.

This United Airlines deal was found by Cheapflights users on 5/23. 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 8/251:13 pm
IAD
-
FCA
1 stop7h 41m
United Airlines
Sat 8/294:17 pm
FCA
-
IAD
1 stop6h 27m
United Airlines
Deal found 5/23$309
This Delta deal was found by Cheapflights users on 5/21. 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.
Mon 9/216:40 pm
IAD
-
FCA
1 stop7h 06m
Delta
Thu 9/246:12 pm
FCA
-
IAD
2 stops12h 58m
Delta
Deal found 5/21$314
This United Airlines deal was found by Cheapflights users on 5/23. 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 8/186:15 am
IAD
-
FCA
1 stop7h 12m
United Airlines
Fri 8/214:17 pm
FCA
-
IAD
1 stop6h 27m
United Airlines
Deal found 5/23$338
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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.
Sat 9/269:03 am
IAD
-
GTF
1 stop9h 36m
Alaska Airlines
Wed 9/305:19 pm
GTF
-
IAD
1 stop10h 21m
Alaska Airlines
Deal found 5/20$338
This Delta deal was found by Cheapflights users on 5/23. 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.
Sun 9/207:00 am
IAD
-
FCA
1 stop6h 55m
Delta
Thu 9/246:10 pm
FCA
-
IAD
2 stops13h 00m
Delta
Deal found 5/23$339
This United Airlines deal was found by Cheapflights users on 5/23. 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 8/252:43 pm
IAD
-
FCA
1 stop8h 38m
United Airlines
Sun 8/304:17 pm
FCA
-
IAD
1 stop6h 27m
United Airlines
Deal found 5/23$342
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Mon 6/86:10 am
IAD
-
FCA
1 stop7h 19m
United Airlines
Thu 6/112:33 pm
FCA
-
IAD
1 stop8h 12m
United Airlines
Deal found 5/20$344
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am
IAD
-
GTF
2 stops13h 43m
Delta
Wed 10/281:10 pm
GTF
-
IAD
1 stop8h 36m
Delta
Deal found 5/24$344
This Delta deal was found by Cheapflights users on 5/20. 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.
Sat 9/127:00 am
IAD
-
BZN
1 stop6h 55m
Delta
Sat 9/191:05 pm
BZN
-
IAD
1 stop8h 46m
Delta
Deal found 5/20$349
This American Airlines deal was found by Cheapflights users on 5/23. 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 5/23$349
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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 9/97:00 am
IAD
-
HLN
1 stop11h 41m
Alaska Airlines
Wed 9/235:18 pm
HLN
-
IAD
1 stop10h 22m
Alaska Airlines
Deal found 5/20$349
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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.
Sat 10/247:00 am
IAD
-
MSO
1 stop9h 50m
Alaska Airlines
Wed 10/282:06 pm
MSO
-
IAD
1 stop7h 53m
Alaska Airlines
Deal found 5/20$349

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 May 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(United Airlines)

One-way from

$138
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$460

Good round-trip deal

$428 or less

Good one-way deal

$303 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. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Montana.
Search Deals
Price to beat on a one-way 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 May 25, 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.Kalispell

IAD - FCA

IADFCA

Washington, D.C. Dulles Intl

Sat 8/22

2:43 pm-9:21 pm

1 stop8h 38m

Kalispell Glacier Park

Fri 8/28

4:17 pm-12:44 am

1 stop6h 27m

$309

Washington, D.C.Kalispell

IAD - FCA

IADFCA

Washington, D.C. Dulles Intl

Mon 9/21

6:40 pm-11:46 pm

1 stop7h 06m

Kalispell Glacier Park

Thu 9/24

6:12 pm-9:10 am

2 stops12h 58m

$314

Washington, D.C.Kalispell

IAD - FCA

IADFCA

Washington, D.C. Dulles Intl

Fri 9/11

6:00 am-5:42 pm

2 stops13h 42m

Kalispell Glacier Park

Thu 9/17

6:12 pm-9:10 am

2 stops12h 58m

$319

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

Sat 10/24

6:00 am-5:43 pm

2 stops13h 43m

Great Falls

Wed 10/28

1:10 pm-11:46 pm

1 stop8h 36m

$344

Washington, D.C.Bozeman

IAD - BZN

IADBZN

Washington, D.C. Dulles Intl

Tue 10/27

5:33 pm-11:59 pm

1 stop8h 26m

Bozeman Gallatin Field

Sat 10/31

7:25 pm-5:40 am

1 stop8h 15m

$349

Washington, D.C.Bozeman

IAD - BZN

IADBZN

Washington, D.C. Dulles Intl

Fri 8/14

3:02 pm-8:43 pm

1 stop7h 41m

Bozeman Gallatin Field

Mon 8/24

4:32 pm-12:32 am

1 stop6h 00m

$349

Washington, D.C.Missoula

IAD - MSO

IADMSO

Washington, D.C. Dulles Intl

Sat 8/29

6:59 am-12:33 pm

1 stop7h 34m

Missoula Johnson-Bell Field

Wed 9/9

6:10 pm-9:10 am

2 stops13h 00m

$354

Washington, D.C.Great Falls

IAD - GTF

IADGTF

Washington, D.C. Dulles Intl

Mon 9/28

7:15 am-12:23 pm

1 stop7h 08m

Great Falls

Tue 10/6

6:20 pm-9:11 am

2 stops12h 51m

$364

Washington, D.C.Kalispell

IAD - FCA

IADFCA

Washington, D.C. Dulles Intl

Tue 8/18

6:56 pm-11:51 pm

1 stop6h 55m

Kalispell Glacier Park

Fri 8/28

5:10 am-6:27 pm

2 stops11h 17m

$379

Washington, D.C.Bozeman

IAD - BZN

IADBZN

Washington, D.C. Dulles Intl

Wed 9/30

6:15 am-12:29 pm

1 stop8h 14m

Bozeman Gallatin Field

Sun 10/4

1:45 pm-11:29 pm

1 stop7h 44m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/23

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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?

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Montana?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Montana may vary depending on when you book. For the best chance of a lower fare, look to book 55 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 May 25, 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
7.9
Good
4,270 reviews

Entertainment

7.5

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

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
7.9
Good
4,270 reviews
Southwest
7.9
Good
4,270 reviews

Entertainment

7.5

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

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
8,434 reviews
Southwest
7.9
Good
4,270 reviews

Entertainment

7.5

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

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
9,747 reviews
Southwest
7.9
Good
4,270 reviews

Entertainment

7.5

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

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
11,629 reviews
Southwest
7.9
Good
4,270 reviews

Entertainment

7.5

Overall

7.9

Comfort

8.0

Boarding

8.1

Crew

8.6

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 8h 38m. Airlines will cover a distance of 1928 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 $138 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 - Missoula Johnson-Bell Field or Washington, D.C. Dulles Intl - Kalispell Glacier Park 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 $455 for a flight from Washington, D.C. Dulles Intl Airport to Montana. The cheapest flight overall is $303 while the most popular route, (Washington, D.C. Dulles Intl - Bozeman Gallatin Field) is currently priced at $339.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Reagan-National to Seattle flights
Dulles Intl to Las Vegas flights
Baltimore to Dallas/Fort Worth flights
Dulles Intl to Los Angeles flights
Baltimore to O'Hare Intl flights
Baltimore to Seattle flights
Reagan-National to Los Angeles flights
Reagan-National to O'Hare Intl flights
Dulles Intl to Orlando flights
Dulles Intl to O'Hare Intl flights
Baltimore to Hobby flights
Baltimore to Los Angeles flights
Baltimore to Miami flights
Reagan-National to Dallas/Fort Worth flights
Reagan-National to Las Vegas flights
Dulles Intl to Miami flights
Dulles Intl to Denver flights
Baltimore to Las Vegas flights
Dulles Intl to Boston flights
Baltimore to Fort Lauderdale flights
Reagan-National to Miami flights
Reagan-National to Boston flights
Baltimore to Atlanta flights
Baltimore to Denver flights
Baltimore to Orlando flights
Dulles Intl to Fort Lauderdale flights
Dulles Intl to San Francisco flights
Dulles Intl to Atlanta flights
Reagan-National to Hobby flights
Reagan-National to Orlando flights
Baltimore to Boston flights
Dulles Intl to Midway flights
Dulles Intl to Tampa flights
Reagan-National to Fort Lauderdale flights
Reagan-National to Atlanta flights
Dulles Intl to Hobby flights
Baltimore to George Bush Intcntl flights
Baltimore to San Francisco flights
Reagan-National to San Francisco flights
Baltimore to Tampa flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to San Diego flights
Baltimore to Midway flights
Reagan-National to George Bush Intcntl flights
Dulles Intl to New Orleans flights
Reagan-National to Nashville flights
Dulles Intl to Sky Harbor Intl 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 May 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$241Average$335FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$248Average$474FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$276Average$536FlexibilityNo cancel feeOn-time69%
DeltaCheapest$282Average$426FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights