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

Delta, Southwest, and Alaska Airlines 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 Bozeman and flying into Boise (one of the most popular routes), then the duration is 3h 48m on average. Another popular route from Montana to Idaho is flying from Missoula to Boise, which will take roughly 3h 54m. Keep in mind that layovers or delays could extend your travel time.

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 54% 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 July 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.

$144 Cheap Flights from Montana to Idaho in 2026

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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.

2:54 pm - 4:08 pm

BZN

BOI

1h 14mnonstop

2:08 pm - 3:14 pm

BOI

BZN

1h 06mnonstop

$177Alaska Airlines

Thu, Nov 5 - Thu, Nov 12

6:00 am - 9:48 am

BZN

BOI

3h 48m

1 stop

8:45 am - 2:26 pm

BOI

BZN

5h 41m

1 stop

$187Delta

Thu, Aug 27 - Sun, Aug 30

5:15 am - 9:29 am

BZN

BOI

4h 14m

1 stop

6:00 am - 11:17 am

BOI

BZN

5h 17m

1 stop

$237Delta

Fri, Jul 24 - Sun, Jul 26

6:00 am - 9:48 am

BZN

BOI

3h 48m

1 stop

6:00 am - 12:05 pm

BOI

BZN

6h 05m

1 stop

$242Delta

Thu, Aug 20 - Sun, Aug 23

10:27 am - 3:27 pm

BZN

BOI

5h 00m

1 stop

2:08 pm - 3:14 pm

BOI

BZN

1h 06mnonstop

$257Alaska Airlines

Thu, Nov 5 - Thu, Nov 12

3:25 pm - 10:25 pm

BZN

GEG

8h 00m

1 stop

7:30 pm - 1:40 am

GEG

BZN

5h 10m

1 stop

$327Southwest

Wed, Sep 30 - Sun, Oct 4

5:05 pm - 11:15 pm

BZN

GEG

7h 10m

1 stop

7:05 am - 5:05 pm

GEG

BZN

9h 00m

2 stops

$328Southwest

Thu, Aug 27 - Sun, Aug 30

4:10 pm - 10:37 pm

BIL

BOI

6h 27m

1 stop

5:46 pm - 10:10 pm

BOI

BIL

4h 24m

1 stop

$375United Airlines

Tue, Aug 4 - Sat, Aug 8

5:07 am - 9:53 am

BIL

BOI

4h 46m

1 stop

5:46 pm - 10:10 pm

BOI

BIL

4h 24m

1 stop

$397United Airlines

Sat, Aug 1 - Wed, Aug 5

10:24 am - 8:01 pm

MSO

GEG

10h 37m

1 stop

4:38 pm - 1:06 pm

GEG

MSO

19h 28m

1 stop

$449Allegiant Air

Sun, Jul 26 - Sun, Aug 2

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Alaska Airlines flights from Montana to Idaho

Our best Alaska Airlines deals on Montana to Idaho flight tickets

Alaska Airlines

Nov 5

BZN2:54 pmBozeman Gallatin Field

1h 14m

BOI4:08 pmBoise Air Term. Gowen Fld

Nov 12

BOI2:08 pmBoise Air Term. Gowen Fld

1h 06m

BZN3:14 pmBozeman Gallatin Field

$177

Alaska Airlines

Nov 5

BZN10:27 amBozeman Gallatin Field

5h 00m

1 stop

BOI3:27 pmBoise Air Term. Gowen Fld

Nov 12

BOI2:08 pmBoise Air Term. Gowen Fld

1h 06m

BZN3:14 pmBozeman Gallatin Field

$257

Alaska Airlines

Nov 13

BZN2:54 pmBozeman Gallatin Field

1h 14m

BOI4:08 pmBoise Air Term. Gowen Fld

Nov 15

BOI2:08 pmBoise Air Term. Gowen Fld

1h 06m

BZN3:14 pmBozeman Gallatin Field

$292

Delta flights from Montana to Idaho

Our best Delta deals on Montana to Idaho flight tickets

Delta

Aug 27

BZN6:00 amBozeman Gallatin Field

3h 48m

1 stop

BOI9:48 amBoise Air Term. Gowen Fld

Aug 30

BOI8:45 amBoise Air Term. Gowen Fld

5h 41m

1 stop

BZN2:26 pmBozeman Gallatin Field

$187

Delta

Jul 24

BZN5:15 amBozeman Gallatin Field

4h 14m

1 stop

BOI9:29 amBoise Air Term. Gowen Fld

Jul 26

BOI6:00 amBoise Air Term. Gowen Fld

5h 17m

1 stop

BZN11:17 amBozeman Gallatin Field

$237

Delta

Aug 20

BZN6:00 amBozeman Gallatin Field

3h 48m

1 stop

BOI9:48 amBoise Air Term. Gowen Fld

Aug 23

BOI6:00 amBoise Air Term. Gowen Fld

6h 05m

1 stop

BZN12:05 pmBozeman Gallatin Field

$242

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

BozemanBoise

BZN - BOI

BZNBOI

Bozeman Gallatin Field

Thu 11/5

2:54 pm-4:08 pm

Nonstop1h 14m

Boise Air Term. Gowen Fld

Thu 11/12

2:08 pm-3:14 pm

Nonstop1h 06m

$177

BozemanBoise

BZN - BOI

BZNBOI

Bozeman Gallatin Field

Thu 8/27

6:00 am-9:48 am

1 stop3h 48m

Boise Air Term. Gowen Fld

Sun 8/30

8:45 am-2:26 pm

1 stop5h 41m

$187

BozemanBoise

BZN - BOI

BZNBOI

Bozeman Gallatin Field

Fri 7/24

5:15 am-9:29 am

1 stop4h 14m

Boise Air Term. Gowen Fld

Sun 7/26

6:00 am-11:17 am

1 stop5h 17m

$237

BozemanBoise

BZN - BOI

BZNBOI

Bozeman Gallatin Field

Thu 8/20

6:00 am-9:48 am

1 stop3h 48m

Boise Air Term. Gowen Fld

Sun 8/23

6:00 am-12:05 pm

1 stop6h 05m

$242

BozemanBoise

BZN - BOI

BZNBOI

Bozeman Gallatin Field

Thu 11/5

10:27 am-3:27 pm

1 stop5h 00m

Boise Air Term. Gowen Fld

Thu 11/12

2:08 pm-3:14 pm

Nonstop1h 06m

$257

BozemanSpokane

BZN - GEG

BZNGEG

Bozeman Gallatin Field

Wed 9/30

3:25 pm-10:25 pm

1 stop8h 00m

Spokane

Sun 10/4

7:30 pm-1:40 am

1 stop5h 10m

$327

BozemanSpokane

BZN - GEG

BZNGEG

Bozeman Gallatin Field

Thu 8/27

5:05 pm-11:15 pm

1 stop7h 10m

Spokane

Sun 8/30

7:05 am-5:05 pm

2 stops9h 00m

$328

BillingsBoise

BIL - BOI

BILBOI

Billings Logan Intl

Tue 8/4

4:10 pm-10:37 pm

1 stop6h 27m

Boise Air Term. Gowen Fld

Sat 8/8

5:46 pm-10:10 pm

1 stop4h 24m

$375

BillingsBoise

BIL - BOI

BILBOI

Billings Logan Intl

Sat 8/1

5:07 am-9:53 am

1 stop4h 46m

Boise Air Term. Gowen Fld

Wed 8/5

5:46 pm-10:10 pm

1 stop4h 24m

$397

MissoulaSpokane

MSO - GEG

MSOGEG

Missoula Johnson-Bell Field

Sun 7/26

10:24 am-8:01 pm

1 stop10h 37m

Spokane

Sun 8/2

4:38 pm-1:06 pm

1 stop19h 28m

$449

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, October 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 $109. If you don’t want to visit Idaho in October, then you should wait until November to fly from Montana, when ticket prices are also cheap, with an average price of $111.

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 $232 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	1h 14m
Direct flights	Fri and Sat
Airports in Idaho	27 airports

The fastest flight from Montana to Idaho takes 1h 14m

Direct flights go from Montana to Idaho on Friday and Saturday. There are no airlines offering direct flights.

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 July 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 40.00% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 20.00%, Embraer 175 with 20.00%, and Boeing 737 MAX 8 with 6.67%.

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 12,602 reviews	Search Alaska Airlines flights
Delta	PriceFrom $132	Free Cancellation	Rating 7.8 8,454 reviews	Search Delta flights
United Airlines	PriceFrom $148	Free Cancellation	Rating 7.4 9,908 reviews	Search United Airlines flights
Southwest	PriceFrom $158	Free Cancellation	Rating 7.9 4,246 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.