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Dulles Intl

$125+ Cheap flights from Montana 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — IAD
dic. 4 — dic. 111
jue. 12/4
jue. 12/11
1 adult, Economy
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Cheap flight deals from Montana to Dulles Intl

Keep the following information in mind while searching for Montana to Dulles Intl flight deals. Data was last updated noviembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Delta)

One-way from

$125
(Southwest)

Popular in

August

Cheapest in

September

Average price

$303
Provider with most accurate pricing for Bozeman Gallatin Field-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Washington, D.C. (WAS) flights.
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From Montana to Washington, D.C. Dulles Intl
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One-way flight from Montana to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Montana to Dulles Intl

Cheapest flights from Montana to Dulles Intl
Explore the most affordable flight options available from Montana to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 4, 2025.

This Delta deal was found by Cheapflights users on 11/2. 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.
vie. 12/52:51 pmFCA - IAD
1 stop7h 11mDelta
vie. 12/126:03 amIAD - FCA
1 stop9h 53mDelta
Deal found 11/2$249
This Delta deal was found by Cheapflights users on 11/2. 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.
sáb. 12/65:00 amFCA - IAD
2 stops10h 00mDelta
vie. 12/126:03 amIAD - FCA
1 stop9h 53mDelta
Deal found 11/2$254
This Delta deal was found by Cheapflights users on 11/2. 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.
sáb. 12/65:00 amFCA - IAD
2 stops10h 00mDelta
mié. 12/1010:08 amIAD - FCA
2 stops15h 02mDelta
Deal found 11/2$259
This Delta deal was found by Cheapflights users on 11/2. 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.
vie. 12/52:51 pmFCA - IAD
1 stop7h 11mDelta
lun. 12/156:03 amIAD - FCA
1 stop9h 53mDelta
Deal found 11/2$274
This Delta deal was found by Cheapflights users on 11/2. 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.
lun. 12/86:06 pmFCA - IAD
2 stops13h 05mDelta
lun. 12/156:03 amIAD - FCA
1 stop9h 53mDelta
Deal found 11/2$279
This Delta deal was found by Cheapflights users on 11/2. 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.
lun. 12/86:06 pmFCA - IAD
2 stops13h 05mDelta
sáb. 12/136:55 amIAD - FCA
2 stops12h 30mDelta
Deal found 11/2$284
This Delta deal was found by Cheapflights users on 11/2. 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.
lun. 12/82:51 pmFCA - IAD
1 stop7h 11mDelta
mié. 12/106:03 amIAD - FCA
1 stop9h 53mDelta
Deal found 11/2$299
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
mié. 12/106:28 pmHLN - IAD
1 stop20h 08mAlaska Airlines
sáb. 12/137:34 amIAD - HLN
1 stop12h 17mAlaska Airlines
Deal found 11/3$324
This Delta deal was found by Cheapflights users on 11/2. 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.
vie. 12/52:51 pmFCA - IAD
1 stop7h 11mDelta
jue. 12/1110:08 amIAD - FCA
2 stops15h 02mDelta
Deal found 11/2$329
This Delta deal was found by Cheapflights users on 11/2. 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.
sáb. 12/65:00 amFCA - IAD
2 stops10h 00mDelta
jue. 12/1110:08 amIAD - FCA
2 stops15h 02mDelta
Deal found 11/2$334
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
mar. 12/97:35 pmGTF - IAD
1 stop19h 01mAlaska Airlines
mar. 12/167:34 amIAD - GTF
1 stop13h 21mAlaska Airlines
Deal found 11/2$362
This United Airlines deal was found by Cheapflights users on 11/3. 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.
mar. 12/96:15 amMSO - IAD
1 stop6h 46mUnited Airlines
jue. 12/112:30 pmIAD - MSO
1 stop8h 48mUnited Airlines
Deal found 11/3$377

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana 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 noviembre 4, 2025.
Use the filters below to find and compare flights from Montana to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Montana

Fly to

Dulles Intl

Route

Depart

Return

Price

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

vie. 12/5

2:51 pm-12:02 am

1 stop7h 11m

Washington, D.C. Dulles Intl

vie. 12/12

6:03 am-1:56 pm

1 stop9h 53m

$249

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

mié. 1/21

3:21 pm-11:57 pm

1 stop6h 36m

Washington, D.C. Dulles Intl

lun. 1/26

7:00 am-2:25 pm

1 stop9h 25m

$249

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

mié. 4/8

3:00 pm-11:35 pm

1 stop6h 35m

Washington, D.C. Dulles Intl

mar. 4/14

6:15 am-1:45 pm

1 stop9h 30m

$249

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

mié. 4/15

3:00 pm-11:29 pm

1 stop6h 29m

Washington, D.C. Dulles Intl

sáb. 4/18

6:15 am-1:45 pm

1 stop9h 30m

$249

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

vie. 12/5

2:51 pm-12:02 am

1 stop7h 11m

Washington, D.C. Dulles Intl

mié. 12/10

10:08 am-11:10 pm

2 stops15h 02m

$254

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

vie. 1/23

3:21 pm-11:57 pm

1 stop6h 36m

Washington, D.C. Dulles Intl

mar. 1/27

10:11 am-10:54 pm

2 stops14h 43m

$254

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

jue. 1/22

3:21 pm-11:57 pm

1 stop6h 36m

Washington, D.C. Dulles Intl

sáb. 1/24

12:32 pm-11:19 pm

2 stops12h 47m

$254

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

mar. 12/9

12:11 pm-11:29 pm

1 stop9h 18m

Washington, D.C. Dulles Intl

mié. 12/10

10:08 am-11:10 pm

2 stops15h 02m

$254

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

mié. 1/21

3:21 pm-11:57 pm

1 stop6h 36m

Washington, D.C. Dulles Intl

mar. 1/27

10:11 am-10:54 pm

2 stops14h 43m

$254

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

jue. 2/26

8:00 am-5:55 pm

1 stop7h 55m

Washington, D.C. Dulles Intl

lun. 3/2

7:00 am-2:25 pm

1 stop9h 25m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 60 results
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Best time to book a flight from Montana to Dulles Intl

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

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

Currently, June is the cheapest month in which you can book a flight from Montana to Washington, D.C. Dulles Intl Airport (average of $218). Flying from Montana to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $461). 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.

What is the cheapest time of day to fly from MT to IAD?

Find hourly flight availability from Montana to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 4, 2025.

It’s optimal to fly from Montana to Washington, D.C. Dulles Intl Airport in the evening. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Montana to Dulles Intl. 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 Montana to Washington, D.C. Dulles Intl Airport?

    Delta, Alaska Airlines, and Hawaiian Airlines can get you from Montana to Washington, D.C. Dulles Intl Airport in just under 7h 11m. Your travel time can differ by up to 44m. The distance between Montana and Washington, D.C. Dulles Intl Airport is about 1928 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $125. Users have also found prices from $165 and $170 on United Airlines and Delta, respectively.

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

    While some choose either Missoula Johnson-Bell Field - Washington, D.C. Dulles Intl or Great Falls - Washington, D.C. Dulles Intl, Bozeman Gallatin Field - Washington, D.C. Dulles Intl is the most popular route from Montana to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from Montana to Washington, D.C. Dulles Intl Airport (average of $218). Flying from Montana to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $461). 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
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

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Alternative routes for Montana to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Reagan-National flights
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O'Hare Intl to Baltimore flights
O'Hare Intl to Dulles Intl flights
Boston to Baltimore flights
Dallas/Fort Worth to Baltimore flights
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Boston to Reagan-National flights
Hobby to Baltimore flights
Fort Lauderdale to Baltimore flights
Atlanta to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
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Seattle to Dulles Intl flights
San Francisco to Reagan-National flights
Denver to Baltimore flights
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Midway to Baltimore flights
Midway to Dulles Intl flights
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George Bush Intcntl to Dulles Intl flights
Atlanta to Baltimore flights
San Francisco to Baltimore flights
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Orlando to Reagan-National flights
Boston to Dulles Intl flights
Seattle to Baltimore flights
Minneapolis to Baltimore flights
Detroit to Baltimore flights
George Bush Intcntl to Reagan-National flights
Austin to Dulles Intl flights
Orlando to Dulles Intl flights
Miami to Dulles Intl flights
Denver to Reagan-National flights
Tampa to Reagan-National flights
Orlando to Baltimore flights
George Bush Intcntl to Baltimore flights
John F Kennedy Intl to Reagan-National flights
Minneapolis to Dulles Intl flights
Minneapolis to Reagan-National flights
Tampa to Baltimore flights
Midway to Reagan-National flights
Miami to Reagan-National flights

Top 3 airlines flying from Montana to Dulles Intl

Discover the top 3 airlines that operate flights from Montana 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 noviembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$220Average$288FlexibilityNo cancel feeOn-time63%
DeltaCheapest$231Average$394FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$312Average$618FlexibilityNo cancel feeOn-time69%

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