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$73+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BZN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:08 pmBOI - BZN
Nonstop1h 09mAlaska Airlines
Sun 1/41:43 pmBZN - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/16$227
This Delta deal was found by Cheapflights users on 12/16. 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.
Wed 12/315:50 amBOI - BZN
1 stop5h 27mDelta
Sun 1/45:20 amBZN - BOI
1 stop4h 48mDelta
Deal found 12/16$273
This Expedia deal was found by Cheapflights users on 12/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 pmBOI - BZN
1 stop5h 59mAlaska Airlines
Wed 12/317:00 amBZN - BOI
1 stop6h 49mAlaska Airlines
Deal found 12/17$296
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 pmBOI - BZN
1 stop5h 59mAlaska Airlines
Sun 12/281:43 pmBZN - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/17$357
This Delta deal was found by Cheapflights users on 12/17. 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.
Wed 12/245:50 amBOI - BZN
1 stop5h 27mDelta
Sun 12/285:20 amBZN - BOI
1 stop4h 48mDelta
Deal found 12/17$383
This Alaska Airlines deal was found by Cheapflights users on 12/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:10 amBOI - BZN
1 stop3h 54mAlaska Airlines
Wed 12/243:57 pmBZN - BOI
1 stop3h 44mAlaska Airlines
Deal found 12/16$416
This Alaska Airlines deal was found by Cheapflights users on 12/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/202:08 pmBOI - BZN
Nonstop1h 09mAlaska Airlines
Wed 12/241:43 pmBZN - BOI
Nonstop1h 22mAlaska Airlines
Deal found 12/17$437
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:20 pmBOI - BIL
1 stop18h 38mAllegiant Air
Sun 1/410:05 pmBIL - BOI
1 stop16h 59mAllegiant Air
Deal found 12/17$445
This Delta deal was found by Cheapflights users on 12/17. 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.
Sun 12/215:50 amBOI - BZN
1 stop5h 27mDelta
Wed 12/2412:15 pmBZN - BOI
1 stop5h 24mDelta
Deal found 12/17$453
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:20 pmBOI - BIL
1 stop18h 38mMultiple Airlines
Sun 1/410:05 pmBIL - BOI
2 stops22h 56mMultiple Airlines
Deal found 12/17$462
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:28 pmGEG - BZN
1 stop6h 00mAlaska Airlines
Sun 1/41:43 pmBZN - GEG
1 stop26h 05mAlaska Airlines
Deal found 12/15$474
This Delta deal was found by Cheapflights users on 12/15. 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.
Wed 12/315:50 amBOI - BIL
1 stop5h 22mDelta
Sun 1/46:20 pmBIL - BOI
1 stop5h 59mDelta
Deal found 12/15$504

Find flight deals from Idaho to Montana

Keep the following information in mind while searching for Idaho to Montana flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$146
(Alaska Airlines)

One-way from

$73
(Alaska Airlines)

Popular in

September

Cheapest in

November

Average price

$342

Good round-trip deal

$137 or less

Good one-way deal

$228 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Bozeman Gallatin Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Bozeman Gallatin Field flights.
Search Deals
From Idaho to Montana
Search Deals
One-way flight from Idaho to Montana
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Idaho to Montana.
Search Deals
Price to beat on a one-way flight from Idaho to Montana.
Search Deals

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 December 18, 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

Tue 1/20

11:35 am-6:45 pm

1 stop7h 10m

Bozeman Gallatin Field

Sat 1/24

11:22 am-6:22 pm

1 stop7h 00m

$146

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 1/23

2:15 pm-3:23 pm

Nonstop1h 08m

Bozeman Gallatin Field

Sat 1/31

7:20 am-3:10 pm

1 stop7h 50m

$162

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 1/16

2:15 pm-3:23 pm

Nonstop1h 08m

Bozeman Gallatin Field

Sun 1/18

1:46 pm-3:03 pm

Nonstop1h 17m

$182

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Fri 1/23

3:40 pm-10:27 pm

1 stop5h 47m

Bozeman Gallatin Field

Mon 1/26

7:23 am-10:45 am

1 stop4h 22m

$205

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Tue 1/13

9:20 am-2:20 pm

1 stop4h 00m

Bozeman Gallatin Field

Tue 1/20

3:00 pm-8:58 pm

1 stop6h 58m

$205

SpokaneGreat Falls

GEG - GTF

GEGGTF

Spokane

Wed 1/14

10:05 am-5:19 pm

1 stop6h 14m

Great Falls

Wed 1/21

5:59 pm-11:04 pm

1 stop6h 05m

$214

SpokaneGreat Falls

GEG - GTF

GEGGTF

Spokane

Wed 1/14

6:05 am-5:30 pm

2 stops10h 25m

Great Falls

Wed 1/21

1:12 pm-6:45 pm

2 stops6h 33m

$215

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Sat 1/24

7:30 am-2:09 pm

1 stop5h 39m

Bozeman Gallatin Field

Wed 1/28

7:20 am-12:44 pm

1 stop6h 24m

$216

SpokaneGreat Falls

GEG - GTF

GEGGTF

Spokane

Thu 1/29

12:10 pm-5:19 pm

1 stop4h 09m

Great Falls

Sat 1/31

5:59 pm-12:23 am

1 stop7h 24m

$224

SpokaneGreat Falls

GEG - GTF

GEGGTF

Spokane

Wed 2/25

5:40 am-5:48 pm

1 stop11h 08m

Great Falls

Mon 3/2

4:57 pm-11:59 pm

1 stop8h 02m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 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 $86). Flying from Idaho to Montana in May is currently the most expensive (average of $214). 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 December 18, 2025.

When flying from Idaho to Montana, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 28% versus a flight in the morning.

What is the cheapest day to fly from Idaho to Montana?

Use this chart to determine the cheapest time to fly round-trip from Idaho to Montana. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Idaho to Montana flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines 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
11,475 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,475 reviews
Alaska Airlines
8.0
Very good
11,475 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,475 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,090 reviews
Alaska Airlines
8.0
Very good
11,475 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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.

  • How long is the flight from Idaho to Montana?

    For as low as $205, Alaska Airlines can have you in Montana from Idaho in 5h 47m. There are 328 mi between Idaho and Montana. This flight may include one or multiple stops.

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

    $58 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 United Airlines, with prices starting from $78 and $179, 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 $86). Flying from Idaho to Montana in May is currently the most expensive (average of $214). 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 3 airlines flying from Idaho to Montana

Discover the top 3 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$101Average$355FlexibilityNo cancel feeOn-time75%
DeltaCheapest$103Average$327FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$290Average$558FlexibilityNo cancel feeOn-time69%

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