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$157+ Cheap flights from Montana to Baltimore (BWI)

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — BWI
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
1 adult, Economy
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Cheap flight deals from Montana to Baltimore

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

This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:18 pm
GTF
-
BWI
1 stop9h 42m
Delta
Thu 10/297:15 am
BWI
-
GTF
1 stop7h 18m
Delta
Deal found 7/14$338
This Delta deal was found by Cheapflights users on 7/15. 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.
Sat 10/246:09 pm
FCA
-
BWI
1 stop9h 51m
Delta
Wed 10/287:30 am
BWI
-
FCA
1 stop9h 11m
Delta
Deal found 7/15$349
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:24 pm
BIL
-
BWI
1 stop9h 56m
Delta
Sun 9/67:39 am
BWI
-
BIL
1 stop6h 36m
Delta
Deal found 7/14$349
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:34 pm
HLN
-
BWI
1 stop6h 23m
United Airlines
Wed 11/184:16 pm
BWI
-
HLN
1 stop7h 23m
United Airlines
Deal found 7/16$349
This Delta deal was found by Cheapflights users on 7/16. 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.
Mon 12/145:40 am
MSO
-
BWI
2 stops12h 01m
Delta
Tue 1/53:00 pm
BWI
-
MSO
1 stop7h 12m
Delta
Deal found 7/16$354
This Delta deal was found by Cheapflights users on 7/13. 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 10/216:18 pm
GTF
-
BWI
1 stop9h 42m
Delta
Fri 10/307:15 am
BWI
-
GTF
1 stop7h 18m
Delta
Deal found 7/13$363
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 10/246:30 am
BZN
-
BWI
1 stop6h 37m
United Airlines
Wed 10/288:20 am
BWI
-
BZN
1 stop7h 08m
United Airlines
Deal found 7/15$372
This Delta deal was found by Cheapflights users on 7/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:17 pm
MSO
-
BWI
1 stop10h 01m
Delta
Wed 10/77:15 am
BWI
-
MSO
1 stop7h 15m
Delta
Deal found 7/17$374
This Delta deal was found by Cheapflights users on 7/13. 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.
Tue 10/66:38 pm
BZN
-
BWI
1 stop9h 22m
Delta
Tue 10/138:10 am
BWI
-
BZN
1 stop7h 10m
Delta
Deal found 7/13$377
This Delta deal was found by Cheapflights users on 7/16. 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.
Sat 8/156:24 pm
BIL
-
BWI
2 stops12h 55m
Delta
Tue 8/257:17 pm
BWI
-
BIL
1 stop6h 13m
Delta
Deal found 7/16$379
This Delta deal was found by Cheapflights users on 7/13. 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 8/286:27 pm
MSO
-
BWI
1 stop9h 53m
Delta
Sat 8/2912:17 pm
BWI
-
MSO
2 stops12h 55m
Delta
Deal found 7/13$379
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:36 pm
BZN
-
BWI
1 stop9h 42m
Delta
Sat 10/36:10 am
BWI
-
BZN
2 stops10h 27m
Delta
Deal found 7/14$380

Find flight deals from Montana to Baltimore

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$338
(Delta)

One-way from

$157
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$493
Provider with most accurate pricing for Bozeman Gallatin Field-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Washington, D.C. (WAS) flights.
Search Deals
From Montana to Baltimore/Washington
Search Deals
One-way flight from Montana to Baltimore/Washington
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to Baltimore 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 July 18, 2026.
Use the filters below to find and compare flights from Montana to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsBaltimore

GTF - BWI

GTFBWI

Great Falls

Tue 10/20

6:18 pm-6:00 am

1 stop9h 42m

Baltimore/Washington

Thu 10/29

7:15 am-12:33 pm

1 stop7h 18m

$338

Great FallsBaltimore

GTF - BWI

GTFBWI

Great Falls

Wed 10/21

6:18 pm-6:00 am

1 stop9h 42m

Baltimore/Washington

Fri 10/30

7:15 am-12:33 pm

1 stop7h 18m

$338
Quickest round-trip

BillingsBaltimore

BIL - BWI

BILBWI

Billings Logan Intl

Sat 8/15

6:26 am-1:57 pm

1 stop5h 31m

Baltimore/Washington

Tue 8/25

7:17 pm-11:30 pm

1 stop6h 13m

$349

BillingsBaltimore

BIL - BWI

BILBWI

Billings Logan Intl

Thu 9/3

6:24 pm-6:20 am

1 stop9h 56m

Baltimore/Washington

Sun 9/6

7:39 am-12:15 pm

1 stop6h 36m

$349

HelenaBaltimore

HLN - BWI

HLNBWI

Helena

Mon 11/9

2:34 pm-10:57 pm

1 stop6h 23m

Baltimore/Washington

Wed 11/18

12:35 pm-9:39 pm

2 stops11h 04m

$354

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Tue 11/17

7:00 am-5:12 pm

1 stop8h 12m

Baltimore/Washington

Wed 11/18

7:00 am-2:14 pm

1 stop9h 14m

$377

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 10/7

6:38 pm-6:00 am

1 stop9h 22m

Baltimore/Washington

Sat 10/10

7:15 am-12:05 pm

1 stop6h 50m

$377

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Thu 8/20

8:35 am-4:30 pm

1 stop5h 55m

Baltimore/Washington

Mon 8/24

6:40 am-1:55 pm

2 stops9h 15m

$382

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Tue 10/20

2:07 pm-9:32 pm

1 stop5h 25m

Baltimore/Washington

Thu 10/29

12:25 pm-10:37 pm

2 stops12h 12m

$382

BozemanBaltimore

BZN - BWI

BZNBWI

Bozeman Gallatin Field

Wed 9/23

6:36 pm-6:18 am

1 stop9h 42m

Baltimore/Washington

Tue 9/29

5:40 pm-12:15 am

2 stops8h 35m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Montana to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore 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 Baltimore

What is the cheapest month to book a flight from Montana to Baltimore?

Currently, January is the cheapest month in which you can book a flight from Montana to Baltimore (average of $420). Flying from Montana to Baltimore in December is currently the most expensive (average of $590). 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.

Weekly flight availability from Montana to Baltimore

Explore weekly flight availability from Montana to Baltimore. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 18, 2026.

The most flights from USMT to BWI are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Montana to Baltimore?

Related info for your journey

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

  • What airport do you fly into for flights to Baltimore from Montana?

    Most people fly into Baltimore/Washington (BWI) if they book a flight to Baltimore from Montana. Baltimore/Washington is conveniently located just 8.5 mi from Baltimore’s city center.

  • How long is the flight from Montana to Baltimore?

    Delta, United Airlines, and Alaska Airlines can get you from Montana to Baltimore in just under 6h 23m. Your travel time can differ by up to 3h 19m. The distance from Montana to Baltimore is about 1842 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Montana to Baltimore?

    The most popular flight routes from Montana to Baltimore are Billings Logan Intl - Baltimore/Washington, Missoula Johnson-Bell Field - Baltimore/Washington and Bozeman Gallatin Field - Baltimore/Washington.

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

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

  • How can I find direct flights from Montana to Baltimore?

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

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

    Yes. Cheapflights offers flight deals from Montana to Baltimore 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 Baltimore?

    Currently, January is the cheapest month in which you can book a flight from Montana to Baltimore (average of $420). Flying from Montana to Baltimore in December is currently the most expensive (average of $590). 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 Montana to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Montana to Baltimore

Discover the top 3 airlines that operate flights from Montana to Baltimore. 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 July 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$248Average$575FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$377FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$308Average$471FlexibilityNo cancel feeOn-time63%

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