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$79+ 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 12/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BZN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 12/22:10 pmBOI - BZN
Nonstop1h 08mAlaska Airlines
Tue 12/91:44 pmBZN - BOI
Nonstop1h 15mAlaska Airlines
Deal found 10/29$117
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:58 pmBOI - BZN
1 stop6h 20mDelta
Thu 12/116:33 pmBZN - BOI
1 stop6h 09mDelta
Deal found 10/29$147
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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.
Sun 12/212:08 pmBOI - BZN
Nonstop1h 09mAlaska Airlines
Thu 12/2511:37 amBZN - BOI
1 stop4h 29mAlaska Airlines
Deal found 10/29$167
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 11/282:10 pmBOI - BZN
Nonstop1h 07mAlaska Airlines
Fri 12/51:44 pmBZN - BOI
Nonstop1h 15mAlaska Airlines
Deal found 10/30$173
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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.
Mon 12/82:10 pmBOI - BZN
Nonstop1h 08mAlaska Airlines
Thu 12/111:44 pmBZN - BOI
Nonstop1h 15mAlaska Airlines
Deal found 10/30$177
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:05 amGEG - GTF
2 stops9h 25mDelta
Thu 12/41:12 pmGTF - GEG
2 stops6h 44mDelta
Deal found 10/29$215
This Delta deal was found by Cheapflights users on 10/28. 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 12/36:05 amGEG - BZN
1 stop7h 14mDelta
Sun 12/77:25 amBZN - GEG
1 stop4h 14mDelta
Deal found 10/28$215
This Expedia deal was found by Cheapflights users on 10/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/282:10 pmBOI - BZN
Nonstop1h 07mAlaska Airlines
Mon 12/11:43 pmBZN - BOI
Nonstop1h 16mAlaska Airlines
Deal found 10/29$223
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:33 pmGEG - BIL
1 stop9h 35mAlaska Airlines
Wed 12/102:02 pmBIL - GEG
1 stop6h 03mAlaska Airlines
Deal found 10/30$223
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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.
Wed 12/35:51 amGEG - MSO
1 stop17h 35mAlaska Airlines
Wed 12/104:22 pmMSO - GEG
1 stop9h 02mAlaska Airlines
Deal found 10/29$224
This Delta deal was found by Cheapflights users on 10/30. 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 11/277:05 amGEG - BZN
1 stop6h 15mDelta
Thu 12/47:25 amBZN - GEG
1 stop6h 05mDelta
Deal found 10/30$225
This Delta deal was found by Cheapflights users on 10/30. 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 12/41:10 pmGEG - BIL
2 stops10h 13mDelta
Wed 12/105:14 amBIL - GEG
2 stops8h 15mDelta
Deal found 10/30$226

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$117
(Alaska Airlines)

One-way from

$79
(Alaska Airlines)

Popular in

September

Cheapest in

March

Average price

$157

Good round-trip deal

$101 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. 11% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip 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 October 30, 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 12/2

2:10 pm-3:18 pm

Nonstop1h 08m

Bozeman Gallatin Field

Tue 12/9

1:44 pm-2:59 pm

Nonstop1h 15m

$117

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Tue 1/27

2:15 pm-3:23 pm

Nonstop1h 08m

Bozeman Gallatin Field

Fri 2/6

1:46 pm-3:03 pm

Nonstop1h 17m

$127

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Mon 12/8

5:58 pm-12:18 am

1 stop6h 20m

Bozeman Gallatin Field

Thu 12/11

6:33 pm-12:42 am

1 stop6h 09m

$147

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Wed 3/4

6:00 pm-10:48 pm

1 stop4h 48m

Bozeman Gallatin Field

Thu 3/5

8:00 am-1:45 pm

1 stop5h 45m

$156

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Sat 1/3

2:08 pm-3:17 pm

Nonstop1h 09m

Bozeman Gallatin Field

Tue 1/6

2:57 pm-9:10 pm

1 stop6h 13m

$157

SpokaneGreat Falls

GEG - GTF

GEGGTF

Spokane

Thu 11/27

7:05 am-5:30 pm

2 stops9h 25m

Great Falls

Thu 12/4

1:12 pm-6:56 pm

2 stops6h 44m

$215

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Sat 12/6

7:10 am-10:26 pm

1 stop14h 16m

Bozeman Gallatin Field

Sun 12/7

7:25 am-10:39 am

1 stop4h 14m

$215

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Wed 12/3

6:05 am-2:19 pm

1 stop7h 14m

Bozeman Gallatin Field

Sun 12/7

7:25 am-10:39 am

1 stop4h 14m

$215

SpokaneBillings

GEG - BIL

GEGBIL

Spokane

Thu 12/4

1:33 pm-12:08 am

1 stop9h 35m

Billings Logan Intl

Wed 12/10

2:02 pm-7:05 pm

1 stop6h 03m

$223

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Fri 12/5

3:35 pm-10:26 pm

1 stop5h 51m

Bozeman Gallatin Field

Sun 12/7

7:25 am-10:39 am

1 stop4h 14m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 54 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 $87). 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 October 30, 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.

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

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 October 30, 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
11,214 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,214 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,993 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,998 reviews
Alaska Airlines
8.0
Very good
11,214 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 $117, Alaska Airlines can have you in Montana from Idaho in 1h 08m. There are 292 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?

    $79 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $119 and $162, 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 $87). 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$99Average$356FlexibilityNo cancel feeOn-time75%
DeltaCheapest$108Average$363FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$290Average$558FlexibilityNo cancel feeOn-time69%

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