What airlines fly to Idaho?

Alaska Airlines, Delta and Southwest 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 53% 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.

How long is the flight from Montana to Idaho?

Flight times from Montana to Idaho vary, but if you’re flying out of Kalispell and flying into Boise (one of the most popular routes), then the duration is 4h 21m on average. Another popular route from Montana to Idaho is flying from Billings to Boise, which will take roughly 4h 28m. Keep in mind that layovers or delays could extend your travel time.

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

Southwest, Delta, and Alaska Airlines are the most popular carriers operating 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 August 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.

$100 Cheap Flights from Montana to Idaho in 2026

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.

4:05 pm - 10:55 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

6h 50m1 stop Denver Intl

3:55 pm - 10:45 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 50m1 stop Denver Intl

$190Southwest

Fri, Nov 6 - Mon, Nov 9

4:05 pm - 10:55 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

6h 50m1 stop Denver Intl

1:45 pm - 6:50 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

5h 05m1 stop Las Vegas Harry Reid Intl

$190Southwest

Fri, Nov 6 - Sat, Nov 7

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

$197Alaska Airlines

Thu, Nov 5 - Mon, Nov 9

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

$197Alaska Airlines

Thu, Oct 15 - Sun, Oct 18

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

5h 12m1 stop Salt Lake City

6:50 pm - 12:27 amBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

5h 37m1 stop Salt Lake City

$207Delta

Fri, Oct 16 - Sun, Oct 18

1:12 pm - 6:00 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

4h 48m1 stop Salt Lake City

6:50 pm - 12:09 amBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

5h 19m1 stop Salt Lake City

$227Delta

Thu, Nov 5 - Tue, Nov 10

6:44 pm - 1:55 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

19h 11m1 stop Las Vegas Harry Reid Intl

2:50 pm - 8:52 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 02m1 stop Las Vegas Harry Reid Intl

$260Multiple Airlines

Thu, Sep 10 - Thu, Sep 17

5:00 am - 9:35 amBIL Billings Logan Intl-BOI Boise Air Term. Gowen Fld

4h 35m1 stop Denver Intl

5:00 am - 9:41 amBOI Boise Air Term. Gowen Fld-BIL Billings Logan Intl

4h 41m1 stop Denver Intl

$365United Airlines

Tue, Sep 15 - Tue, Sep 22

5:00 am - 9:34 amBIL Billings Logan Intl-BOI Boise Air Term. Gowen Fld

4h 34m1 stop Denver Intl

5:00 am - 9:46 amBOI Boise Air Term. Gowen Fld-BIL Billings Logan Intl

4h 46m1 stop Denver Intl

$365United Airlines

Wed, Oct 14 - Wed, Oct 21

7:05 pm - 5:45 pmMSO Missoula Johnson-Bell Field-GEG Spokane

23h 40m1 stop Phoenix-Mesa Gateway

10:09 am - 8:59 pmGEG Spokane-MSO Missoula Johnson-Bell Field

9h 50m1 stop Las Vegas Harry Reid Intl

$469Allegiant Air

Sun, Sep 6 - Sun, Sep 13

Cheap last minute flights

Enter your travel dates to find the best prices.

2:30 pm - 8:40 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

6h 10m1 stop San Diego

12:30 pm - 5:05 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

4h 35m1 stop Denver Intl

$577Southwest

Fri, Aug 14 - Sun, Aug 16

5:05 pm - 11:35 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

6h 30m1 stop Las Vegas Harry Reid Intl

2:25 pm - 9:15 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 50m1 stop Denver Intl

$577Southwest

Thu, Aug 13 - Sat, Aug 15

3:30 pm - 11:55 pmBZN Bozeman Gallatin Field-BOI Boise Air Term. Gowen Fld

8h 25m2 stops Denver Intl Phoenix Sky Harbor Intl

2:25 pm - 9:15 pmBOI Boise Air Term. Gowen Fld-BZN Bozeman Gallatin Field

6h 50m1 stop Denver Intl

$582Southwest

Thu, Aug 13 - Sat, Aug 15

1:50 pm - 11:07 pmBZN Bozeman Gallatin Field-GEG Spokane

10h 17m1 stop San Diego

3:44 pm - 10:59 pmGEG Spokane-BZN Bozeman Gallatin Field

6h 15m1 stop Seattle/Tacoma Intl

$612Alaska Airlines

Thu, Aug 13 - Sat, Aug 22

1:50 pm - 11:59 pmBZN Bozeman Gallatin Field-GEG Spokane

11h 09m2 stops San Diego Seattle/Tacoma Intl

6:21 pm - 10:59 pmGEG Spokane-BZN Bozeman Gallatin Field

3h 38m1 stop Seattle/Tacoma Intl

$657Alaska Airlines

Thu, Aug 13 - Sat, Aug 22

1:08 pm - 5:55 pmGTF Great Falls-BOI Boise Air Term. Gowen Fld

4h 47m1 stop Salt Lake City

6:45 pm - 10:38 pmBOI Boise Air Term. Gowen Fld-GTF Great Falls

3h 53m1 stop Salt Lake City

$754Delta

Mon, Aug 17 - Wed, Aug 19

1:08 pm - 5:55 pmGTF Great Falls-BOI Boise Air Term. Gowen Fld

4h 47m1 stop Salt Lake City

6:45 pm - 10:38 pmBOI Boise Air Term. Gowen Fld-GTF Great Falls

3h 53m1 stop Salt Lake City

$754Delta

Mon, Aug 17 - Tue, Aug 18

4:40 pm - 8:46 pmBIL Billings Logan Intl-GEG Spokane

5h 06m1 stop Denver Intl

1:37 pm - 9:00 pmGEG Spokane-BIL Billings Logan Intl

6h 23m1 stop Denver Intl

$820United Airlines

Fri, Aug 14 - Tue, Aug 18

5:07 am - 9:35 amBIL Billings Logan Intl-BOI Boise Air Term. Gowen Fld

4h 28m1 stop Denver Intl

2:44 pm - 10:07 pmBOI Boise Air Term. Gowen Fld-BIL Billings Logan Intl

7h 23m1 stop Denver Intl

$820United Airlines

Thu, Aug 13 - Sun, Aug 16

5:52 pm - 10:58 pmMSO Missoula Johnson-Bell Field-BOI Boise Air Term. Gowen Fld

29h 06m2 stops Los Angeles Phoenix Sky Harbor Intl

1:55 pm - 5:20 pmBOI Boise Air Term. Gowen Fld-MSO Missoula Johnson-Bell Field

27h 25m2 stops Phoenix Sky Harbor Intl Los Angeles

$1,196American Airlines

Sat, Aug 15 - Mon, Aug 17

Cheap direct flights

Enter your travel dates to find the best prices.

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

$197Alaska Airlines

Thu, Nov 5 - Mon, Nov 9

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

$197Alaska Airlines

Thu, Oct 15 - Sun, Oct 18

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

Thu, Nov 5 - Sun, Nov 8

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 - 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

$257Alaska Airlines

Mon, Nov 2 - Thu, Nov 5

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

$337Alaska Airlines

Fri, Nov 6 - Sun, Nov 8

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

$347Alaska Airlines

Fri, Oct 16 - Sun, Oct 18

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

$347Alaska Airlines

Fri, Nov 13 - Sun, Nov 15

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

$419Alaska Airlines

Wed, Jan 27 - Wed, Feb 3

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Southwest flights from Montana to Idaho

Our best Southwest deals on Montana to Idaho flight tickets

Southwest

Nov 6

BZN4:05 pmBozeman Gallatin Field

6h 50m

1 stop

BOI10:55 pmBoise Air Term. Gowen Fld

Nov 9

BOI3:55 pmBoise Air Term. Gowen Fld

6h 50m

1 stop

BZN10:45 pmBozeman Gallatin Field

$190

Southwest

Nov 6

BZN4:05 pmBozeman Gallatin Field

6h 50m

1 stop

BOI10:55 pmBoise Air Term. Gowen Fld

Nov 9

BOI12:30 pmBoise Air Term. Gowen Fld

10h 15m

2 stops

BZN10:45 pmBozeman Gallatin Field

$195

Southwest

Nov 6

BZN7:55 amBozeman Gallatin Field

9h 05m

2 stops

BOI5:00 pmBoise Air Term. Gowen Fld

Nov 7

BOI11:45 amBoise Air Term. Gowen Fld

7h 05m

2 stops

BZN6:50 pmBozeman Gallatin Field

$201

Delta flights from Montana to Idaho

Our best Delta deals on Montana to Idaho flight tickets

Delta

Oct 16

BZN5:30 amBozeman Gallatin Field

5h 12m

1 stop

BOI10:42 amBoise Air Term. Gowen Fld

Oct 18

BOI6:50 pmBoise Air Term. Gowen Fld

5h 37m

1 stop

BZN12:27 amBozeman Gallatin Field

$207

Delta

Nov 5

BZN1:12 pmBozeman Gallatin Field

4h 48m

1 stop

BOI6:00 pmBoise Air Term. Gowen Fld

Nov 10

BOI6:50 pmBoise Air Term. Gowen Fld

5h 19m

1 stop

BZN12:09 amBozeman Gallatin Field

$227

Delta

Oct 10

BZN5:30 amBozeman Gallatin Field

5h 12m

1 stop

BOI10:42 amBoise Air Term. Gowen Fld

Oct 12

BOI6:50 pmBoise Air Term. Gowen Fld

5h 37m

1 stop

BZN12:27 amBozeman Gallatin Field

$237

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 11/6

4:05 pm-10:55 pm

1 stop6h 50m

Boise Air Term. Gowen Fld

Mon 11/9

3:55 pm-10:45 pm

1 stop6h 50m

$190

BozemanBoise

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

BZNBOI

Bozeman Gallatin Field

Fri 11/6

4:05 pm-10:55 pm

1 stop6h 50m

Boise Air Term. Gowen Fld

Sat 11/7

1:45 pm-6:50 pm

1 stop5h 05m

$190

BozemanBoise

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

BZNBOI

Bozeman Gallatin Field

Thu 11/5

2:54 pm-4:08 pm

Nonstop1h 14m

Boise Air Term. Gowen Fld

Mon 11/9

2:08 pm-3:14 pm

Nonstop1h 06m

$197

Quickest round-trip

BozemanBoise

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

BZNBOI

Bozeman Gallatin Field

Thu 10/15

2:55 pm-4:07 pm

Nonstop1h 12m

Boise Air Term. Gowen Fld

Sun 10/18

2:09 pm-3:15 pm

Nonstop1h 06m

$197

BozemanBoise

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

BZNBOI

Bozeman Gallatin Field

Fri 10/16

5:30 am-10:42 am

1 stop5h 12m

Boise Air Term. Gowen Fld

Sun 10/18

6:50 pm-12:27 am

1 stop5h 37m

$207

BozemanBoise

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

BZNBOI

Bozeman Gallatin Field

Thu 11/5

1:12 pm-6:00 pm

1 stop4h 48m

Boise Air Term. Gowen Fld

Tue 11/10

6:50 pm-12:09 am

1 stop5h 19m

$227

BozemanBoise

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

BZNBOI

Bozeman Gallatin Field

Thu 9/10

6:44 pm-1:55 pm

1 stop19h 11m

Boise Air Term. Gowen Fld

Thu 9/17

2:50 pm-8:52 pm

1 stop6h 02m

$260

BillingsBoise

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

BILBOI

Billings Logan Intl

Tue 9/15

5:00 am-9:35 am

1 stop4h 35m

Boise Air Term. Gowen Fld

Tue 9/22

5:00 am-9:41 am

1 stop4h 41m

$365

BillingsBoise

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

BILBOI

Billings Logan Intl

Wed 10/14

5:00 am-9:34 am

1 stop4h 34m

Boise Air Term. Gowen Fld

Wed 10/21

5:00 am-9:46 am

1 stop4h 46m

$365

MissoulaSpokane

MSO Missoula Johnson-Bell Field - GEG Spokane

MSOGEG

Missoula Johnson-Bell Field

Sun 9/6

7:05 pm-5:45 pm

1 stop23h 40m

Spokane

Sun 9/13

10:09 am-8:59 pm

1 stop9h 50m

$469

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, April 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 $212. If you don’t want to visit Idaho in April, then you should wait until October to fly from Montana, when ticket prices are also cheap, with an average price of $274.

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 $172. 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 $723.

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 $212. 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 $219 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 is only 1 cabin class 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

Fastest flight time	3h 41m
Direct flights	Mon, Tue, Thu, Fri and Sat
Airports in Idaho	27 airports

The fastest flight from Montana to Idaho takes 3h 41m

Direct flights go from Montana to Idaho on Monday, Tuesday, Thursday, Friday and Saturday. The only airline offering direct flights is Alaska Airlines.

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 August 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 Boeing 737-800 Passenger/BBJ2 (winglets), making up 50.00% of the total bookings. Other popular models include Embraer 175 with 16.67%, Boeing 737 MAX 8 with 8.33%, and Embraer 175 (Enhanced Winglets) with 8.33%.

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 12,797 reviews	Search Alaska Airlines flights
Delta	PriceFrom $132	Free Cancellation	Rating 7.8 8,506 reviews	Search Delta flights
United Airlines	PriceFrom $148	Free Cancellation	Rating 7.4 10,109 reviews	Search United Airlines flights
Southwest	PriceFrom $158	Free Cancellation	Rating 8.0 4,220 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.