Cheap flights from Montana to Washington, D.C. from $142

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 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Montana to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:33 pm - 12:45 am
FCA
-
IAD
8h 12m
1 stop
United Airlines Logo
6:30 am - 1:30 pm
IAD
-
FCA
9h 00m
1 stop
$309United Airlines
Fri, May 22 - Mon, May 25
Delta Logo
6:35 pm - 5:45 am
BZN
-
BWI
9h 10m
1 stop
Delta Logo
7:13 pm - 11:58 pm
BWI
-
BZN
6h 45m
1 stop
$309Delta
Thu, Jun 4 - Wed, Jun 10
Delta Logo
1:45 pm - 11:46 pm
BZN
-
BWI
8h 01m
1 stop
Delta Logo
5:32 pm - 12:23 am
BWI
-
BZN
8h 51m
2 stops
$314Delta
Wed, Jun 3 - Mon, Jun 8
American Airlines Logo
1:25 pm - 12:13 am
FCA
-
IAD
8h 48m
2 stops
American Airlines Logo
6:20 am - 4:03 pm
IAD
-
FCA
11h 43m
2 stops
$319American Airlines
Fri, May 22 - Mon, May 25
Delta Logo
8:00 am - 11:46 pm
BZN
-
BWI
13h 46m
2 stops
Delta Logo
5:32 pm - 12:23 am
BWI
-
BZN
8h 51m
2 stops
$319Delta
Wed, Jun 3 - Mon, Jun 8
Southwest Logo
7:20 am - 11:25 pm
BZN
-
BWI
14h 05m
2 stops
Southwest Logo
6:30 am - 10:40 am
BWI
-
BZN
6h 10m
1 stop
$345Southwest
Thu, Aug 20 - Wed, Aug 26
Alaska Airlines Logo
11:43 am - 11:59 pm
BZN
-
IAD
10h 16m
1 stop
Alaska Airlines Logo
6:03 am - 2:09 pm
IAD
-
BZN
10h 06m
1 stop
$349Alaska Airlines
Thu, Jun 4 - Wed, Jun 10
Alaska Airlines Logo
3:40 pm - 3:34 pm
BZN
-
BWI
21h 54m
1 stop
Alaska Airlines Logo
4:34 pm - 1:24 pm
BWI
-
BZN
22h 50m
1 stop
$349Alaska Airlines
Wed, Sep 16 - Wed, Sep 23
Multiple Airlines Logo
4:47 pm - 8:12 am
BZN
-
IAD
13h 25m
1 stop
Multiple Airlines Logo
1:38 pm - 3:57 pm
IAD
-
BZN
28h 19m
2 stops
$363Multiple Airlines
Sun, Jun 7 - Wed, Jun 10
American Airlines Logo
12:42 pm - 12:13 am
BIL
-
IAD
9h 31m
2 stops
American Airlines Logo
6:18 am - 12:53 pm
IAD
-
BIL
8h 35m
1 stop
$395American Airlines
Sat, May 23 - Wed, May 27

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Alaska Airlines flights from Montana to Washington, D.C.

Our best Alaska Airlines deals on Montana to Washington, D.C. flight tickets
Alaska Airlines
Sep 16
BZN3:40 pmBozeman Gallatin Field
21h 54m
1 stop
BWI3:34 pmBaltimore/Washington
Sep 23
BWI4:34 pmBaltimore/Washington
22h 50m
1 stop
BZN1:24 pmBozeman Gallatin Field
$349
Alaska Airlines
May 23
BIL6:00 amBillings Logan Intl
8h 38m
1 stop
IAD4:38 pmWashington, D.C. Dulles Intl
May 27
IAD6:00 amWashington, D.C. Dulles Intl
9h 21m
1 stop
BIL1:21 pmBillings Logan Intl
$351
Alaska Airlines
Oct 14
FCA8:00 pmKalispell Glacier Park
9h 28m
1 stop
IAD7:28 amWashington, D.C. Dulles Intl
Oct 19
IAD5:38 pmWashington, D.C. Dulles Intl
8h 21m
1 stop
FCA11:59 pmKalispell Glacier Park
$359

United Airlines flights from Montana to Washington, D.C.

Our best United Airlines deals on Montana to Washington, D.C. flight tickets
United Airlines
May 22
FCA2:33 pmKalispell Glacier Park
8h 12m
1 stop
IAD12:45 amWashington, D.C. Dulles Intl
May 25
IAD6:30 amWashington, D.C. Dulles Intl
9h 00m
1 stop
FCA1:30 pmKalispell Glacier Park
$309
United Airlines
Apr 29
BZN2:40 pmBozeman Gallatin Field
6h 44m
1 stop
BWI11:24 pmBaltimore/Washington
May 4
BWI6:05 amBaltimore/Washington
11h 17m
1 stop
BZN3:22 pmBozeman Gallatin Field
$359
United Airlines
May 19
BZN6:30 amBozeman Gallatin Field
9h 02m
1 stop
IAD5:32 pmWashington, D.C. Dulles Intl
May 26
IAD5:43 pmWashington, D.C. Dulles Intl
7h 00m
1 stop
BZN10:43 pmBozeman Gallatin Field
$375

momondo Fare Finder

 
Customize your flight search to find flights from Montana to Washington, D.C. 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 April 19, 2026.
Use the filters below to find and compare flights from Montana to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Fri 5/22

2:33 pm-12:45 am

1 stop8h 12m

Washington, D.C. Dulles Intl

Mon 5/25

6:30 am-1:30 pm

1 stop9h 00m

$309
Quickest round-trip

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Thu 6/4

6:35 pm-5:45 am

1 stop9h 10m

Baltimore/Washington

Wed 6/10

7:13 pm-11:58 pm

1 stop6h 45m

$309

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 6/3

1:45 pm-11:46 pm

1 stop8h 01m

Baltimore/Washington

Mon 6/8

5:32 pm-12:23 am

2 stops8h 51m

$314

KalispellWashington, D.C.

FCA - IAD

FCAIAD

Kalispell Glacier Park

Fri 5/22

1:25 pm-12:13 am

2 stops8h 48m

Washington, D.C. Dulles Intl

Mon 5/25

6:20 am-4:03 pm

2 stops11h 43m

$319

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 6/3

8:00 am-11:46 pm

2 stops13h 46m

Baltimore/Washington

Mon 6/8

5:32 pm-12:23 am

2 stops8h 51m

$319

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Thu 8/20

7:20 am-11:25 pm

2 stops14h 05m

Baltimore/Washington

Wed 8/26

6:30 am-10:40 am

1 stop6h 10m

$345

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Thu 6/4

11:43 am-11:59 pm

1 stop10h 16m

Washington, D.C. Dulles Intl

Wed 6/10

6:03 am-2:09 pm

1 stop10h 06m

$349

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 9/16

3:40 pm-3:34 pm

1 stop21h 54m

Baltimore/Washington

Wed 9/23

4:34 pm-1:24 pm

1 stop22h 50m

$349

BozemanWashington, D.C.

BZN - IAD

BZNIAD

Bozeman Gallatin Field

Sun 6/7

4:47 pm-8:12 am

1 stop13h 25m

Washington, D.C. Dulles Intl

Wed 6/10

1:38 pm-3:57 pm

2 stops28h 19m

$363

BillingsWashington, D.C.

BIL - IAD

BILIAD

Billings Logan Intl

Sat 5/23

12:42 pm-12:13 am

2 stops9h 31m

Washington, D.C. Dulles Intl

Wed 5/27

6:18 am-12:53 pm

1 stop8h 35m

$395

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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.

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 month to fly to Washington, D.C.?

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Montana, with most prices found around $288. If you’re not able to fly to Washington, D.C. in January, then September is your next best option. Flight prices from Montana to Washington, D.C. during September average around $288.

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

On average, the least expensive day to fly to Washington, D.C. from Montana is on a Friday. momondo users have found tickets for Friday departures for as low as $672. However, this price may fluctuate depending on the airline, the season, and holidays. 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. for around $844.

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

At noon is the cheapest time of day to fly from Montana to Washington, D.C. when you can find flight prices for as low as $649. Flying to Washington, D.C. at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $1,127. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

There are 3 cabin classes available to choose from on Montana to Washington, D.C. 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. flights?

You could potentially save up to 37% on your flight if you consider stops on a Montana to Washington, D.C. flight.

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

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

Best Price Found

$279

Fastest flight time

4h 05m

Direct flights

Mon and Sun

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from Montana in the past 72 hours is $279. The best round-trip flight deal from Montana to Washington, D.C. found on momondo in the last 72 hours is $571.
The fastest flight from Montana to Washington, D.C. takes 4h 05m
Direct flights go from Montana to Washington, D.C. on Monday and Sunday. There are no airlines offering direct flights.
There are 2 airports in Washington, D.C.. From Montana there are direct flights to Washington, D.C. Dulles Intl (IAD).

Frequently asked questions about flying from Montana to Washington, D.C.

  • When did momondo last update prices for flights from Montana to Washington, D.C.?

    Prices for flights from Montana to Washington, D.C. are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana to Washington, D.C..

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

    The travel and health documents you'll need for your trip to Washington, D.C. 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.. 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.?

Best airlines flying from Montana to Washington, D.C.

Compare and see reviews for airlines that fly from Montana to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $158Free CancellationRating
7.9
8,422 reviews
Search Delta flights
SouthwestPriceFrom $241Free CancellationRating
8.0
4,327 reviews
Search Southwest flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,604 reviews
Search United Airlines flights
American AirlinesPriceFrom $288Free CancellationRating
7.1
11,620 reviews
Search American 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
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Fredericksburg
Silver Spring
Rockville
Manassas
Tysons
Linthicum Heights
Bethesda
Fairfax
Springfield
College Park

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montana to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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 helps you find the best flight between Montana and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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1 adult
Tue 5/19
Tue 5/26

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.