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Cheap flights from Montana to Washington, D.C. from $165

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Washington, D.C. departing on 12/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Delta Logo
2:51 pm - 12:02 amFCA-IAD
7h 11m1 stop
Delta Logo
6:03 am - 1:56 pmIAD-FCA
9h 53m1 stop
$249Delta
Find Deal
Fri, Dec 5 - Fri, Dec 12
Hawaiian Airlines Logo
7:00 am - 5:20 pmBZN-IAD
8h 20m1 stop
Hawaiian Airlines Logo
7:05 am - 2:08 pmIAD-BZN
9h 03m1 stop
$269Hawaiian Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
6:42 pm - 5:49 amFCA-IAD
9h 07m1 stop
Alaska Airlines Logo
7:00 am - 5:51 pmIAD-FCA
12h 51m1 stop
$298Alaska Airlines
Find Deal
Thu, Apr 23 - Mon, Apr 27
United Airlines Logo
4:14 pm - 12:15 amBZN-IAD
6h 01m1 stop
United Airlines Logo
8:15 am - 3:10 pmIAD-BZN
8h 55m1 stop
$309United Airlines
Find Deal
Tue, Dec 23 - Wed, Dec 31
Alaska Airlines Logo
7:56 pm - 6:13 amBZN-IAD
8h 17m1 stop
Alaska Airlines Logo
6:29 pm - 12:03 pmIAD-BZN
19h 34m1 stop
$319Alaska Airlines
Find Deal
Mon, Dec 29 - Mon, Jan 5
United Airlines Logo
6:22 pm - 5:19 amBZN-IAD
8h 57m1 stop
United Airlines Logo
6:30 am - 11:39 amIAD-BZN
7h 09m1 stop
$323United Airlines
Find Deal
Sun, Dec 28 - Sun, Jan 4
Southwest Logo
10:15 am - 7:05 pmBZN-IAD
6h 50m1 stop
Southwest Logo
5:45 pm - 10:45 pmIAD-BZN
7h 00m1 stop
$349Southwest
Find Deal
Fri, Dec 12 - Mon, Dec 15
Southwest Logo
5:00 am - 1:05 pmBZN-IAD
6h 05m1 stop
Southwest Logo
7:50 pm - 12:25 amIAD-BZN
6h 35m1 stop
$384Southwest
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Tue, Dec 30 - Sun, Jan 4
American Airlines Logo
1:50 pm - 10:15 pmBZN-IAD
6h 25m1 stop
American Airlines Logo
6:40 am - 2:36 pmIAD-BZN
9h 56m1 stop
$504American Airlines
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Wed, Mar 18 - Sat, Mar 21
American Airlines Logo
7:00 am - 7:31 pmMSO-IAD
10h 31m2 stops
American Airlines Logo
9:15 am - 8:02 pmIAD-MSO
12h 47m2 stops
$519American Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13

Delta flights from Montana to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Montana to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Dec 5
FCA2:51 pmKalispell Glacier Park
7h 11m
1 stop
IAD12:02 amWashington, D.C. Dulles Intl
Dec 12
IAD6:03 amWashington, D.C. Dulles Intl
9h 53m
1 stop
FCA1:56 pmKalispell Glacier Park
$249
Find similar
Delta
Apr 15
FCA3:00 pmKalispell Glacier Park
6h 29m
1 stop
IAD11:29 pmWashington, D.C. Dulles Intl
Apr 18
IAD6:15 amWashington, D.C. Dulles Intl
9h 30m
1 stop
FCA1:45 pmKalispell Glacier Park
$274
Find similar
Delta
Jan 15
BZN2:39 pmBozeman Gallatin Field
6h 58m
1 stop
IAD11:37 pmWashington, D.C. Dulles Intl
Jan 20
IAD7:30 amWashington, D.C. Dulles Intl
8h 50m
1 stop
BZN2:20 pmBozeman Gallatin Field
$307
Find similar

Alaska Airlines flights from Montana to Washington, D.C. Dulles Intl Airport

Our best Alaska Airlines deals on Montana to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Apr 23
FCA6:42 pmKalispell Glacier Park
9h 07m
1 stop
IAD5:49 amWashington, D.C. Dulles Intl
Apr 27
IAD7:00 amWashington, D.C. Dulles Intl
12h 51m
1 stop
FCA5:51 pmKalispell Glacier Park
$298
Find similar
Alaska Airlines
Dec 29
BZN7:56 pmBozeman Gallatin Field
8h 17m
1 stop
IAD6:13 amWashington, D.C. Dulles Intl
Jan 5
IAD6:29 pmWashington, D.C. Dulles Intl
19h 34m
1 stop
BZN12:03 pmBozeman Gallatin Field
$319
Find similar
Alaska Airlines
Dec 6
MSO6:29 amMissoula Johnson-Bell Field
8h 07m
1 stop
IAD4:36 pmWashington, D.C. Dulles Intl
Dec 13
IAD7:34 amWashington, D.C. Dulles Intl
9h 58m
1 stop
MSO3:32 pmMissoula Johnson-Bell Field
$324
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Montana to Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated November 10, 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

Fly to

Route

Depart

Return

Price

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Fri 12/5

2:51 pm-12:02 am

1 stop7h 11m

Washington, D.C. Dulles Intl

Fri 12/12

6:03 am-1:56 pm

1 stop9h 53m

$249

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Thu 2/26

7:00 am-5:20 pm

1 stop8h 20m

Washington, D.C. Dulles Intl

Mon 3/2

7:05 am-2:08 pm

1 stop9h 03m

$269

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Thu 4/23

6:42 pm-5:49 am

1 stop9h 07m

Washington, D.C. Dulles Intl

Mon 4/27

7:00 am-5:51 pm

1 stop12h 51m

$298

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Tue 12/23

4:14 pm-12:15 am

1 stop6h 01m

Washington, D.C. Dulles Intl

Wed 12/31

8:15 am-3:10 pm

1 stop8h 55m

$309

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Mon 12/29

7:56 pm-6:13 am

1 stop8h 17m

Washington, D.C. Dulles Intl

Mon 1/5

6:29 pm-12:03 pm

1 stop19h 34m

$319

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sun 12/28

6:22 pm-5:19 am

1 stop8h 57m

Washington, D.C. Dulles Intl

Sun 1/4

6:30 am-11:39 am

1 stop7h 09m

$323

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Fri 12/12

10:15 am-7:05 pm

1 stop6h 50m

Washington, D.C. Dulles Intl

Mon 12/15

5:45 pm-10:45 pm

1 stop7h 00m

$349

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Tue 12/30

5:00 am-1:05 pm

1 stop6h 05m

Washington, D.C. Dulles Intl

Sun 1/4

7:50 pm-12:25 am

1 stop6h 35m

$384

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Wed 3/18

1:50 pm-10:15 pm

1 stop6h 25m

Washington, D.C. Dulles Intl

Sat 3/21

6:40 am-2:36 pm

1 stop9h 56m

$504

MissoulaWashington, D.C.

MSO - IAD

MSOIAD

Missoula Johnson-Bell Field

Sat 12/6

7:00 am-7:31 pm

2 stops10h 31m

Washington, D.C. Dulles Intl

Sat 12/13

9:15 am-8:02 pm

2 stops12h 47m

$519

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Montana to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $396. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Montana to Washington, D.C. Dulles Intl Airport for around $824.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Montana at noon is the least expensive time of day to depart. momondo users have found prices as low as $554 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $892 on average. Flights to Washington, D.C. Dulles Intl Airport from Montana in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Montana to Washington, D.C. Dulles Intl flight route?

Fly from Bozeman Gallatin Field to Washington, D.C. Dulles Intl for the best Montana - Washington, D.C. Dulles Intl flight prices

What cabin class options are available on Montana to Washington, D.C. Dulles Intl flights?

There are 3 cabin classes available to choose from on Montana to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Montana to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 8% on your flight if you consider stops on a Montana to Washington, D.C. Dulles Intl Airport flight.

Cheap Montana to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Washington, D.C. Dulles Intl Airport

Fastest flight time

3h 48m

Direct flights

Sun
The fastest flight from Montana to Washington, D.C. Dulles Intl Airport takes 3h 48m
Direct flights go from Montana to Washington, D.C. Dulles Intl Airport on Sunday. There are no airlines offering direct flights.
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  • When did momondo last update prices for flights from Montana to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Montana to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Montana to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Montana to Washington, D.C. Dulles Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Montana to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Montana to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Montana to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $220Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
DeltaPriceFrom $231Free CancellationRating
7.9
8,004 reviews
Search Delta flights
United AirlinesPriceFrom $312Free CancellationRating
7.4
9,011 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Washington, D.C.?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montana to Washington, D.C.. momondo saves you time and could save you money on your trip.

Can I find flights from Montana to Washington, D.C. with flexible booking policies on momondo?

All flight searches from Montana to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Montana to Washington, D.C.?

momondo provides multiple filters to help you find the best flight to Washington, D.C. from Montana. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Montana to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Montana to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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