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$120+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BZN
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$197
(Delta)

One-way from

$120
(Delta)

Popular in

July

Cheapest in

March

Average price

$434

Good round-trip deal

$147 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Bozeman Gallatin Field flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Bozeman Gallatin Field flights.
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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. 22% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Idaho to Montana.
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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 April 22, 2025.

This Delta deal was found by Cheapflights users on 4/22. 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 6/126:10 pmBOI - BZN
1 stop5h 51mDelta
Thu 6/195:30 amBZN - BOI
1 stop3h 59mDelta
Deal found 4/22$197
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/279:30 amGEG - MSO
1 stop3h 51mAlaska Airlines
Wed 6/46:39 pmMSO - GEG
1 stop6h 15mAlaska Airlines
Deal found 4/21$238
This Southwest deal was found by Cheapflights users on 4/21. 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.
Mon 9/295:45 amBOI - BZN
1 stop7h 00mSouthwest
Thu 10/26:00 amBZN - BOI
2 stops7h 35mSouthwest
Deal found 4/21$253
This SmartFares deal was found by Cheapflights users on 4/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/35:39 pmBOI - MSO
1 stop5h 57mAlaska Airlines
Tue 6/106:39 pmMSO - BOI
1 stop4h 03mAlaska Airlines
Deal found 4/21$254
This Hawaiian Airlines deal was found by Cheapflights users on 4/21. 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 5/177:45 amBOI - MSO
1 stop4h 28mHawaiian Airlines
Sat 5/246:39 pmMSO - BOI
1 stop4h 05mHawaiian Airlines
Deal found 4/21$260
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 5/147:45 amBOI - BZN
1 stop6h 14mAlaska Airlines
Tue 5/205:32 amBZN - BOI
2 stops8h 33mAlaska Airlines
Deal found 4/21$261
This Trip.com deal was found by Cheapflights users on 4/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/187:45 amBOI - MSO
1 stop4h 28mMultiple Airlines
Tue 5/206:42 amMSO - BOI
1 stop4h 04mMultiple Airlines
Deal found 4/21$262
This Delta deal was found by Cheapflights users on 4/21. 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 5/197:00 pmGEG - BZN
1 stop4h 04mDelta
Mon 5/265:40 amBZN - GEG
1 stop4h 15mDelta
Deal found 4/21$265
This Delta deal was found by Cheapflights users on 4/21. 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 6/37:18 pmBOI - FCA
1 stop5h 12mDelta
Sun 6/85:30 amFCA - BOI
1 stop3h 59mDelta
Deal found 4/21$271
This Delta deal was found by Cheapflights users on 4/21. 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 6/67:18 pmBOI - MSO
1 stop5h 03mDelta
Thu 6/126:24 pmMSO - BOI
1 stop5h 50mDelta
Deal found 4/21$281
This Delta deal was found by Cheapflights users on 4/21. 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 5/217:40 pmBOI - BIL
1 stop4h 39mDelta
Thu 5/225:20 amBIL - BOI
1 stop4h 46mDelta
Deal found 4/21$305
This Delta deal was found by Cheapflights users on 4/22. 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 5/147:00 pmGEG - BIL
1 stop4h 19mDelta
Mon 5/195:20 amBIL - GEG
1 stop4h 35mDelta
Deal found 4/22$312

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 April 22, 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

Thu 6/12

6:10 pm-12:01 am

1 stop5h 51m

Bozeman Gallatin Field

Thu 6/19

5:30 am-9:29 am

1 stop3h 59m

$197

SpokaneMissoula

GEG - MSO

GEGMSO

Spokane

Tue 5/27

9:30 am-2:21 pm

1 stop3h 51m

Missoula Johnson-Bell Field

Wed 6/4

6:39 pm-11:54 pm

1 stop6h 15m

$238

BoiseMissoula

BOI - MSO

BOIMSO

Boise Air Term. Gowen Fld

Tue 6/3

5:39 pm-11:36 pm

1 stop5h 57m

Missoula Johnson-Bell Field

Tue 6/10

6:39 pm-10:42 pm

1 stop4h 03m

$254

BoiseMissoula

BOI - MSO

BOIMSO

Boise Air Term. Gowen Fld

Sat 5/17

7:45 am-12:13 pm

1 stop4h 28m

Missoula Johnson-Bell Field

Sat 5/24

6:39 pm-10:44 pm

1 stop4h 05m

$260

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Wed 5/14

7:45 am-1:59 pm

1 stop6h 14m

Bozeman Gallatin Field

Tue 5/20

5:32 am-2:05 pm

2 stops8h 33m

$261

BoiseMissoula

BOI - MSO

BOIMSO

Boise Air Term. Gowen Fld

Sun 5/18

7:45 am-12:13 pm

1 stop4h 28m

Missoula Johnson-Bell Field

Tue 5/20

6:42 am-10:46 am

1 stop4h 04m

$262

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Mon 5/19

7:00 pm-12:04 am

1 stop4h 04m

Bozeman Gallatin Field

Mon 5/26

5:40 am-8:55 am

1 stop4h 15m

$265

BoiseKalispell

BOI - FCA

BOIFCA

Boise Air Term. Gowen Fld

Tue 6/3

7:18 pm-12:30 am

1 stop5h 12m

Kalispell Glacier Park

Sun 6/8

5:30 am-9:29 am

1 stop3h 59m

$271

BoiseMissoula

BOI - MSO

BOIMSO

Boise Air Term. Gowen Fld

Fri 6/6

7:18 pm-12:21 am

1 stop5h 03m

Missoula Johnson-Bell Field

Thu 6/12

6:24 pm-12:14 am

1 stop5h 50m

$281

SpokaneKalispell

GEG - FCA

GEGFCA

Spokane

Fri 5/30

11:11 am-7:07 pm

1 stop6h 56m

Kalispell Glacier Park

Sun 6/1

10:25 am-5:13 pm

2 stops31h 48m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 47 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 June is currently the most expensive (average of $520). 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 April 22, 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.

Rainfall in Montana by month

Plan your trip to Montana by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Montana ranges from 0.4 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Montana when rainfall is around 0.4 in.

Temperature in Montana by month

Plan your trip to Montana by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Montana, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

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 April 22, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Idaho to Montana have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,906 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,286 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,392 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,683 reviews
Alaska Airlines
8.0
Very good
9,906 reviews

Entertainment

7.1

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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?

    $120 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Alaska Airlines and Hawaiian Airlines, with prices starting from $132 and $147, 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 June is currently the most expensive (average of $520). 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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$136Average$370FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$147Average$437FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$161Average$446FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$288Average$444FlexibilityNo cancel feeOn-time69%

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