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$108+ Cheap flights from Idaho 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BZN
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from Idaho to Montana

Keep the following information in mind while searching for Idaho to Montana flight deals. Data was last updated August 1, 2025.

Round-trip from

$147
(Delta)

One-way from

$108
(Delta)

Popular in

August

Cheapest in

March

Average price

$437
From Idaho to Montana
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One-way flight from Idaho to Montana
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Highest demand for flights based on searches. 20% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Idaho to Montana

Cheapest flights from Idaho to Montana
Explore the most affordable flight options available from Idaho to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 11/152:16 pmBOI - BZN
Nonstop1h 06mAlaska Airlines
Sun 11/161:42 pmBZN - BOI
Nonstop1h 15mAlaska Airlines
Deal found 7/30$127
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/152:16 pmBOI - BZN
Nonstop1h 06mHawaiian Airlines
Sun 11/163:02 pmBZN - BOI
1 stop7h 18mHawaiian Airlines
Deal found 7/30$137
This Delta deal was found by Cheapflights users on 7/30. 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 9/116:00 amBOI - BZN
1 stop5h 05mDelta
Sat 9/135:30 amBZN - BOI
1 stop5h 18mDelta
Deal found 7/30$147
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:45 amBOI - BZN
1 stop7h 00mSouthwest
Sun 9/145:40 amBZN - BOI
1 stop5h 10mSouthwest
Deal found 7/30$197
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 9/238:51 pmGEG - BZN
1 stop12h 55mAlaska Airlines
Sat 9/273:08 pmBZN - GEG
1 stop4h 42mAlaska Airlines
Deal found 7/31$238
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Tue 9/1611:22 amBOI - MSO
1 stop3h 56mAlaska Airlines
Sat 9/204:14 pmMSO - BOI
1 stop6h 36mAlaska Airlines
Deal found 7/29$238
This Delta deal was found by Cheapflights users on 7/30. 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 8/206:00 pmBOI - MSO
1 stop6h 15mDelta
Tue 8/265:30 amMSO - BOI
1 stop4h 15mDelta
Deal found 7/30$239
This Delta deal was found by Cheapflights users on 7/31. 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 9/239:15 amGEG - BZN
2 stops7h 21mDelta
Sat 9/275:28 pmBZN - GEG
1 stop6h 45mDelta
Deal found 7/31$244
This Delta deal was found by Cheapflights users on 7/30. 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 8/1410:45 amBOI - BTM
1 stop6h 21mDelta
Mon 8/186:14 pmBTM - BOI
1 stop6h 01mDelta
Deal found 7/30$269
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/206:00 amBOI - BIL
1 stop7h 24mAlaska Airlines
Mon 9/227:18 pmBIL - BOI
1 stop20h 36mAlaska Airlines
Deal found 7/31$274
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/68:00 amBOI - HLN
1 stop7h 21mAlaska Airlines
Sat 9/134:02 pmHLN - BOI
1 stop6h 48mAlaska Airlines
Deal found 7/31$284
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 9/95:45 pmGEG - BIL
1 stop5h 26mAlaska Airlines
Sun 9/146:00 amBIL - GEG
1 stop4h 00mAlaska Airlines
Deal found 7/31$287

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 August 1, 2025.
Use the filters below to find and compare flights from Idaho to Montana that are best for you.

Fly from

Idaho

Fly to

Montana

Route

Depart

Return

Price

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Sat 11/15

2:16 pm-3:22 pm

Nonstop1h 06m

Bozeman Gallatin Field

Sun 11/16

1:42 pm-2:57 pm

Nonstop1h 15m

$127

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Sat 11/15

2:16 pm-3:22 pm

Nonstop1h 06m

Bozeman Gallatin Field

Sun 11/16

3:02 pm-10:20 pm

1 stop7h 18m

$137

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Thu 9/11

6:00 am-11:05 am

1 stop5h 05m

Bozeman Gallatin Field

Sat 9/13

5:30 am-10:48 am

1 stop5h 18m

$147

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 9/12

5:45 am-12:45 pm

1 stop7h 00m

Bozeman Gallatin Field

Sun 9/14

5:40 am-10:50 am

1 stop5h 10m

$197

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Tue 9/23

8:51 pm-10:46 am

1 stop12h 55m

Bozeman Gallatin Field

Sat 9/27

3:08 pm-6:50 pm

1 stop4h 42m

$238

BoiseMissoula

BOI - MSO

BOIMSO

Boise Air Term. Gowen Fld

Tue 9/16

11:22 am-3:18 pm

1 stop3h 56m

Missoula Johnson-Bell Field

Sat 9/20

4:14 pm-10:50 pm

1 stop6h 36m

$238

BoiseMissoula

BOI - MSO

BOIMSO

Boise Air Term. Gowen Fld

Wed 8/20

6:00 pm-12:15 am

1 stop6h 15m

Missoula Johnson-Bell Field

Tue 8/26

5:30 am-9:45 am

1 stop4h 15m

$239

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Tue 9/23

9:15 am-5:36 pm

2 stops7h 21m

Bozeman Gallatin Field

Sat 9/27

5:28 pm-11:13 pm

1 stop6h 45m

$244

BoiseButte

BOI - BTM

BOIBTM

Boise Air Term. Gowen Fld

Thu 8/14

10:45 am-5:06 pm

1 stop6h 21m

Butte Silver Bow Co

Mon 8/18

6:14 pm-12:15 am

1 stop6h 01m

$269

BoiseBillings

BOI - BIL

BOIBIL

Boise Air Term. Gowen Fld

Sat 9/20

6:00 am-1:24 pm

1 stop7h 24m

Billings Logan Intl

Mon 9/22

7:18 pm-3:54 pm

1 stop20h 36m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 53 results
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Best time to book a flight from Idaho to Montana

Have a flexible travel schedule? Discover the best time to fly to Montana from Idaho 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 Idaho to Montana

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

Currently, October is the cheapest month in which you can book a flight from Idaho to Montana (average of $371). Flying from Idaho to Montana in May is currently the most expensive (average of $478). 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 ID to MT?

Find hourly flight availability from Idaho to Montana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Montana as you normally would.

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 August 1, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Idaho to Montana have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,904 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

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

  • What are the cheapest airlines to fly from Idaho to Montana one-way?

    $108 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and United Airlines, with prices starting from $119 and $135, respectively.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Idaho to Montana (average of $371). Flying from Idaho to Montana in May is currently the most expensive (average of $478). 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 Idaho to Montana

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Idaho to Montana

Discover the top 4 airlines that operate flights from Idaho 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$126Average$376FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$137Average$383FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$161Average$446FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$288Average$424FlexibilityNo cancel feeOn-time69%

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