What is the cheapest airline that flies from Montana to Idaho?

Southwest, Alaska Airlines, and Delta are the most popular carriers operating from Montana to Idaho

How long is the flight from Montana to Idaho?

Flight times from Montana to Idaho vary, but if you’re flying out of Great Falls and flying into Boise (one of the most popular routes), then the duration is 3h 39m on average. Another popular route from Montana to Idaho is flying from Billings to Boise, which will take roughly 4h 27m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Idaho?

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Idaho from Montana according to our data. Alaska Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Montana to Idaho?

Prices for flights from Montana to Idaho are refreshed on a daily basis.

How many operators does momondo search for flights from Montana to Idaho?

The number of operators available for flights from Montana to Idaho is 4 as of October 2026.

How old do you have to be to fly from Montana to Idaho?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana to Idaho.

What documentation or ID do you need to fly to Idaho?

The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$109 Cheap Flights from Montana to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montana to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:50 am - 11:50 amBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

5h 00m1 stop Las Vegas Harry Reid Intl

2:45 pm - 9:35 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 50m1 stop Denver Intl

$217Southwest

Fri, Nov 13 - Sat, Nov 14

2:53 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 14mnonstop

2:08 pm - 3:17 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 09mnonstop

$232Alaska Airlines

Sun, Dec 13 - Sat, Dec 19

1:00 pm - 5:55 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

4h 55m1 stop Salt Lake City

6:45 pm - 12:19 amBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

5h 34m1 stop Salt Lake City

$237Delta

Fri, Nov 13 - Sun, Nov 15

5:30 am - 10:42 amBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

5h 12m1 stop Salt Lake City

6:00 am - 12:07 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 07m1 stop Salt Lake City

$237Delta

Thu, Nov 5 - Sun, Nov 8

7:14 pm - 11:59 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

4h 45m1 stop Seattle/Tacoma Intl

2:05 pm - 3:13 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 08mnonstop

$240Alaska Airlines

Fri, Dec 4 - Sun, Dec 6

4:05 pm - 11:00 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

6h 55m1 stop Denver Intl

11:30 am - 9:35 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

10h 05m2 stops Las Vegas Harry Reid Intl Denver Intl

$283Southwest

Fri, Nov 13 - Sat, Nov 14

2:05 pm - 1:53 pmMSO Missoula Johnson-Bell Field-BOI Boise Air Term. Gowen Fld

23h 48m1 stop Phoenix-Mesa Gateway

7:55 pm - 9:17 amBOI Boise Air Term. Gowen Fld-MSO Missoula Johnson-Bell Field

13h 22m1 stop Las Vegas Harry Reid Intl

$417Multiple Airlines

Thu, Nov 12 - Sat, Nov 21

5:00 am - 9:52 amBIL Billings Logan Intl-BOI Boise Air Term. Gowen Fld

4h 52m1 stop Denver Intl

6:30 am - 1:29 pmBOI Boise Air Term. Gowen Fld-BIL Billings Logan Intl

6h 59m1 stop Denver Intl

$465United Airlines

Wed, Oct 28 - Fri, Oct 30

5:00 am - 9:52 amBIL Billings Logan Intl-BOI Boise Air Term. Gowen Fld

4h 52m1 stop Denver Intl

6:30 am - 1:29 pmBOI Boise Air Term. Gowen Fld-BIL Billings Logan Intl

6h 59m1 stop Denver Intl

$505United Airlines

Wed, Oct 28 - Fri, Oct 30

10:17 am - 1:55 pmMSO Missoula Johnson-Bell Field-BOI Boise Air Term. Gowen Fld

27h 38m1 stop Las Vegas Harry Reid Intl

1:30 pm - 11:29 amBOI Boise Air Term. Gowen Fld-MSO Missoula Johnson-Bell Field

21h 59m1 stop Phoenix-Mesa Gateway

$575Multiple Airlines

Thu, Oct 15 - Mon, Oct 19

Cheap last minute flights

Enter your travel dates to find the best prices.

6:10 pm - 11:59 pmBTM Butte Silver Bow Co-BOI Boise Air Term. Gowen Fld

5h 49m1 stop Salt Lake City

1:06 pm - 5:00 pmBOI Boise Air Term. Gowen Fld-BTM Butte Silver Bow Co

3h 54m1 stop Salt Lake City

$404Delta

Fri, Oct 9 - Sat, Oct 10

2:55 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 12mnonstop

2:09 pm - 3:15 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 06mnonstop

$457Alaska Airlines

Fri, Oct 9 - Sun, Oct 11

5:30 am - 10:42 amBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

5h 12m1 stop Salt Lake City

11:32 am - 5:51 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 19m1 stop Salt Lake City

$477Delta

Fri, Oct 9 - Mon, Oct 12

5:30 am - 10:42 amBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

5h 12m1 stop Salt Lake City

1:06 pm - 5:51 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

4h 45m1 stop Salt Lake City

$477Delta

Fri, Oct 9 - Sat, Oct 10

2:55 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 12mnonstop

12:58 pm - 6:19 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

5h 21m1 stop Seattle/Tacoma Intl

$497Alaska Airlines

Fri, Oct 9 - Mon, Oct 12

2:55 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 12mnonstop

9:12 am - 1:15 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

4h 03m1 stop Portland

$497Alaska Airlines

Fri, Oct 9 - Sat, Oct 10

5:50 am - 12:10 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

6h 20m1 stop Las Vegas Harry Reid Intl

3:20 pm - 10:10 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 50m1 stop Denver Intl

$498Southwest

Mon, Oct 5 - Wed, Oct 7

5:50 am - 12:10 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

6h 20m1 stop Las Vegas Harry Reid Intl

11:20 am - 7:45 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

8h 25m2 stops Las Vegas Harry Reid Intl Denver Intl

$503Southwest

Mon, Oct 5 - Wed, Oct 7

4:00 pm - 9:35 pmBIL Billings Logan Intl-BOI Boise Air Term. Gowen Fld

5h 35m1 stop Denver Intl

6:25 am - 1:15 pmBOI Boise Air Term. Gowen Fld-BIL Billings Logan Intl

6h 50m1 stop Denver Intl

$811United Airlines

Fri, Oct 9 - Mon, Oct 12

9:45 am - 12:58 pmBTM Butte Silver Bow Co-BOI Boise Air Term. Gowen Fld

27h 13m2 stops Denver Intl San Francisco

5:30 pm - 10:30 pmBOI Boise Air Term. Gowen Fld-BTM Butte Silver Bow Co

5h 00m1 stop Denver Intl

$938United Airlines

Fri, Oct 9 - Sat, Oct 10

Cheap direct flights

Enter your travel dates to find the best prices.

2:53 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 14mnonstop

2:08 pm - 3:17 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 09mnonstop

$232Alaska Airlines

Sun, Dec 13 - Sat, Dec 19

2:59 pm - 4:14 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 15mnonstop

2:12 pm - 3:19 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 07mnonstop

$252Alaska Airlines

Sat, Nov 21 - Fri, Nov 27

2:54 pm - 4:08 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 14mnonstop

2:08 pm - 3:14 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 06mnonstop

$257Alaska Airlines

Mon, Nov 2 - Thu, Nov 5

2:52 pm - 4:09 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 17mnonstop

2:08 pm - 3:17 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 09mnonstop

$267Alaska Airlines

Mon, Dec 28 - Fri, Jan 1

4:48 pm - 5:55 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 07mnonstop

3:00 pm - 4:08 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 08mnonstop

$267Alaska Airlines

Fri, Feb 12 - Sun, Feb 14

2:55 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 12mnonstop

2:08 pm - 3:14 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 06mnonstop

$267Alaska Airlines

Fri, Oct 30 - Fri, Nov 6

2:54 pm - 4:08 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 14mnonstop

2:08 pm - 3:14 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 06mnonstop

$297Alaska Airlines

Mon, Nov 2 - Fri, Nov 6

2:55 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 12mnonstop

2:09 pm - 3:15 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 06mnonstop

$322Alaska Airlines

Fri, Oct 23 - Sun, Oct 25

2:55 pm - 4:07 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

1h 12mnonstop

2:09 pm - 3:15 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

1h 06mnonstop

$337Alaska Airlines

Fri, Oct 23 - Sun, Oct 25

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Alaska Airlines flights from Montana to Idaho

Our best Alaska Airlines deals on Montana to Idaho flight tickets

Alaska Airlines

Dec 13

BZN2:53 pmBozeman Gallatin Field

1h 14m

BOI4:07 pmBoise Air Term. Gowen Fld

Dec 19

BOI2:08 pmBoise Air Term. Gowen Fld

1h 09m

BZN3:17 pmBozeman Gallatin Field

$232

Alaska Airlines

Dec 4

BZN7:14 pmBozeman Gallatin Field

4h 45m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

Dec 6

BOI2:05 pmBoise Air Term. Gowen Fld

1h 08m

BZN3:13 pmBozeman Gallatin Field

$240

Alaska Airlines

Oct 30

BZN2:55 pmBozeman Gallatin Field

1h 12m

BOI4:07 pmBoise Air Term. Gowen Fld

Nov 3

BOI6:21 pmBoise Air Term. Gowen Fld

4h 31m

1 stop

BZN10:52 pmBozeman Gallatin Field

$247

Delta flights from Montana to Idaho

Our best Delta deals on Montana to Idaho flight tickets

Delta

Nov 5

BZN5:30 amBozeman Gallatin Field

5h 12m

1 stop

BOI10:42 amBoise Air Term. Gowen Fld

Nov 8

BOI6:00 amBoise Air Term. Gowen Fld

6h 07m

1 stop

BZN12:07 pmBozeman Gallatin Field

$237

Delta

Oct 30

BZN5:30 amBozeman Gallatin Field

5h 12m

1 stop

BOI10:42 amBoise Air Term. Gowen Fld

Nov 6

BOI11:32 amBoise Air Term. Gowen Fld

6h 19m

1 stop

BZN5:51 pmBozeman Gallatin Field

$262

Delta

Oct 23

BZN1:12 pmBozeman Gallatin Field

4h 47m

1 stop

BOI5:59 pmBoise Air Term. Gowen Fld

Oct 25

BOI6:49 pmBoise Air Term. Gowen Fld

5h 38m

1 stop

BZN12:27 amBozeman Gallatin Field

$287

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BozemanBoise

BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld

BZNBOI

Bozeman Gallatin Field

Fri 11/13

6:50 am-11:50 am

1 stop5h 00m

Boise Air Term. Gowen Fld

Sat 11/14

2:45 pm-9:35 pm

1 stop6h 50m

$217

Quickest round-trip

BozemanBoise

BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld

BZNBOI

Bozeman Gallatin Field

Sun 12/13

2:53 pm-4:07 pm

Nonstop1h 14m

Boise Air Term. Gowen Fld

Sat 12/19

2:08 pm-3:17 pm

Nonstop1h 09m

$232

BozemanBoise

BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld

BZNBOI

Bozeman Gallatin Field

Fri 11/13

1:00 pm-5:55 pm

1 stop4h 55m

Boise Air Term. Gowen Fld

Sun 11/15

6:45 pm-12:19 am

1 stop5h 34m

$237

BozemanBoise

BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld

BZNBOI

Bozeman Gallatin Field

Thu 11/5

5:30 am-10:42 am

1 stop5h 12m

Boise Air Term. Gowen Fld

Sun 11/8

6:00 am-12:07 pm

1 stop6h 07m

$237

BozemanBoise

BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld

BZNBOI

Bozeman Gallatin Field

Fri 12/4

7:14 pm-11:59 pm

1 stop4h 45m

Boise Air Term. Gowen Fld

Sun 12/6

2:05 pm-3:13 pm

Nonstop1h 08m

$240

BozemanBoise

BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld

BZNBOI

Bozeman Gallatin Field

Fri 11/13

4:05 pm-11:00 pm

1 stop6h 55m

Boise Air Term. Gowen Fld

Sat 11/14

11:30 am-9:35 pm

2 stops10h 05m

$283

MissoulaBoise

MSO Missoula Johnson-Bell Field - BOI Boise Air Term. Gowen Fld

MSOBOI

Missoula Johnson-Bell Field

Thu 11/12

2:05 pm-1:53 pm

1 stop23h 48m

Boise Air Term. Gowen Fld

Sat 11/21

7:55 pm-9:17 am

1 stop13h 22m

$417

BillingsBoise

BIL Billings Logan Intl - BOI Boise Air Term. Gowen Fld

BILBOI

Billings Logan Intl

Wed 10/28

5:00 am-9:52 am

1 stop4h 52m

Boise Air Term. Gowen Fld

Fri 10/30

6:30 am-1:29 pm

1 stop6h 59m

$465

BillingsBoise

BIL Billings Logan Intl - BOI Boise Air Term. Gowen Fld

BILBOI

Billings Logan Intl

Wed 10/28

5:00 am-9:52 am

1 stop4h 52m

Boise Air Term. Gowen Fld

Fri 10/30

6:30 am-1:29 pm

1 stop6h 59m

$505

MissoulaBoise

MSO Missoula Johnson-Bell Field - BOI Boise Air Term. Gowen Fld

MSOBOI

Missoula Johnson-Bell Field

Thu 10/15

10:17 am-1:55 pm

1 stop27h 38m

Boise Air Term. Gowen Fld

Mon 10/19

1:30 pm-11:29 am

1 stop21h 59m

$575

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana to Idaho

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Idaho?

In general, January is the cheapest month to fly from Montana to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $216. If you don’t want to visit Idaho in January, then you should wait until March to fly from Montana, when ticket prices are also cheap, with an average price of $281.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Thursday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $187. On the other hand, Sunday is the most expensive day to depart from Montana because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $543.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is in the afternoon. momondo users have found flights departing from Montana to Idaho in the afternoon for as low as $172. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Idaho, so prices are often more expensive at around $276 per ticket.

What is the cheapest Montana to Idaho flight route?

Fly from Bozeman Gallatin Field to Boise Air Term. Gowen Fld for the best Montana - Idaho flight prices

What cabin class options are available on Montana to Idaho flights?

There are 2 cabin classes available to choose from on Montana to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Montana to Idaho flights?

No. A direct flight is the cheapest option for a flight between Montana to Idaho.

Cheap Montana to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Idaho

Best Price Found	$109
Fastest flight time	3h 27m
Direct flights	Every day
Airports in Idaho	27 airports

The best one-way flight to Idaho from Montana in the past 72 hours is $109. The best round-trip flight deal from Montana to Idaho found on momondo in the last 72 hours is $217.

The fastest flight from Montana to Idaho takes 3h 27m

Direct flights go from Montana to Idaho every day.

There are 27 airports in Idaho. From Montana there are direct flights to Boise Air Term. Gowen Fld (BOI).

Search flight deals

Frequently asked questions about flying from Montana to Idaho

When did momondo last update prices for flights from Montana to Idaho?
Prices for flights from Montana to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from Montana to Idaho?
The number of operators available for flights from Montana to Idaho is 4 as of October 2026.
How old do you have to be to fly from Montana to Idaho?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana to Idaho.
What documentation or ID do you need to fly to Idaho?
The necessary travel and health documents for your Idaho trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Montana to Idaho?
Based on momondo bookings for flights between Montana and Idaho, the leading plane model is Embraer 175, making up 52.38% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 28.57%, Boeing 737 MAX 8 with 4.76%, and Embraer 175 (Enhanced Winglets) with 4.76%.

Best airlines flying from Montana to Idaho

Compare and see reviews for airlines that fly from Montana to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $117	Free Cancellation	Rating 7.9 13,009 reviews	Search Alaska Airlines flights
Delta	PriceFrom $132	Free Cancellation	Rating 7.8 8,626 reviews	Search Delta flights
United Airlines	PriceFrom $148	Free Cancellation	Rating 7.4 10,283 reviews	Search United Airlines flights
Southwest	PriceFrom $286	Free Cancellation	Rating 7.9 4,215 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Idaho?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montana to Idaho. momondo saves you time and could save you money on your trip.

Can I find flights from Montana to Idaho with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Montana to Idaho flights to just show those with flexible booking policies.

How can momondo help me find flights from Montana to Idaho?

Once all potential Montana to Idaho flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Montana to Idaho right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho from Montana are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.