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

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

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

Prices for flights from Idaho to Montana refresh daily.

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

The number of operators available for flights from Idaho to Montana is 2 as of June 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Montana.

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

The required travel and health documents for your Montana trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montana. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$129 Cheap Flights from Idaho to Montana in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Montana

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:44 pm - 12:15 am

BOI

BZN

5h 31m

1 stop

6:00 am - 9:51 am

BZN

BOI

3h 51m

1 stop

$187Delta

Fri, Sep 11 - Mon, Sep 14

5:45 pm - 12:10 am

BOI

BZN

6h 25m

1 stop

5:45 am - 10:19 am

BZN

BOI

4h 34m

1 stop

$212Delta

Fri, Oct 9 - Wed, Oct 14

5:15 pm - 10:03 pm

BOI

BZN

4h 48m

1 stop

6:00 pm - 10:41 pm

BZN

BOI

4h 41m

1 stop

$237Delta

Sat, Jul 25 - Sat, Aug 1

3:57 pm - 5:03 pm

BOI

BZN

1h 06mnonstop

5:43 pm - 6:55 pm

BZN

BOI

1h 12mnonstop

$292Alaska Airlines

Fri, Oct 23 - Sun, Oct 25

11:15 am - 10:00 pm

GEG

BZN

9h 45m

2 stops

4:10 pm - 9:25 pm

BZN

GEG

6h 15m

1 stop

$292Southwest

Sat, Aug 1 - Sat, Aug 15

5:10 pm - 11:40 pm

GEG

BZN

5h 30m

1 stop

4:10 pm - 9:25 pm

BZN

GEG

6h 15m

1 stop

$295Southwest

Mon, Aug 24 - Sat, Aug 29

3:57 pm - 5:03 pm

BOI

BZN

1h 06mnonstop

8:00 am - 12:35 pm

BZN

BOI

4h 35m

1 stop

$297Alaska Airlines

Fri, Oct 9 - Wed, Oct 14

9:14 pm - 9:10 am

GEG

BIL

10h 56m

1 stop

5:53 pm - 11:02 am

BIL

GEG

18h 09m

1 stop

$317Allegiant Air

Thu, Aug 6 - Sun, Aug 9

11:58 am - 2:50 pm

GEG

BIL

25h 52m

1 stop

5:56 pm - 11:08 am

BIL

GEG

18h 12m

1 stop

$408Allegiant Air

Fri, Jul 17 - Sun, Jul 19

11:58 am - 10:36 am

GEG

FCA

21h 38m

1 stop

10:14 am - 5:31 pm

FCA

GEG

8h 17m

1 stop

$500Multiple Airlines

Fri, Jul 10 - Sun, Jul 12

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Delta flights from Idaho to Montana

Our best Delta deals on Idaho to Montana flight tickets

Delta

Sep 11

BOI6:44 pmBoise Air Term. Gowen Fld

5h 31m

1 stop

BZN12:15 amBozeman Gallatin Field

Sep 14

BZN6:00 amBozeman Gallatin Field

3h 51m

1 stop

BOI9:51 amBoise Air Term. Gowen Fld

$187

Delta

Oct 9

BOI5:45 pmBoise Air Term. Gowen Fld

6h 25m

1 stop

BZN12:10 amBozeman Gallatin Field

Oct 14

BZN5:45 amBozeman Gallatin Field

4h 34m

1 stop

BOI10:19 amBoise Air Term. Gowen Fld

$212

Delta

Jul 25

BOI5:15 pmBoise Air Term. Gowen Fld

4h 48m

1 stop

BZN10:03 pmBozeman Gallatin Field

Aug 1

BZN6:00 pmBozeman Gallatin Field

4h 41m

1 stop

BOI10:41 pmBoise Air Term. Gowen Fld

$237

Southwest flights from Idaho to Montana

Our best Southwest deals on Idaho to Montana flight tickets

Southwest

Aug 1

GEG11:15 amSpokane

9h 45m

2 stops

BZN10:00 pmBozeman Gallatin Field

Aug 15

BZN4:10 pmBozeman Gallatin Field

6h 15m

1 stop

GEG9:25 pmSpokane

$292

Southwest

Aug 24

GEG5:10 pmSpokane

5h 30m

1 stop

BZN11:40 pmBozeman Gallatin Field

Aug 29

BZN4:10 pmBozeman Gallatin Field

6h 15m

1 stop

GEG9:25 pmSpokane

$295

Southwest

Aug 24

GEG5:30 amSpokane

10h 00m

2 stops

BZN4:30 pmBozeman Gallatin Field

Aug 29

BZN4:10 pmBozeman Gallatin Field

6h 15m

1 stop

GEG9:25 pmSpokane

$300

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 9/11

6:44 pm-12:15 am

1 stop5h 31m

Bozeman Gallatin Field

Mon 9/14

6:00 am-9:51 am

1 stop3h 51m

$187

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 10/9

5:45 pm-12:10 am

1 stop6h 25m

Bozeman Gallatin Field

Wed 10/14

5:45 am-10:19 am

1 stop4h 34m

$212

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Sat 7/25

5:15 pm-10:03 pm

1 stop4h 48m

Bozeman Gallatin Field

Sat 8/1

6:00 pm-10:41 pm

1 stop4h 41m

$237

Quickest round-trip

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 10/23

3:57 pm-5:03 pm

Nonstop1h 06m

Bozeman Gallatin Field

Sun 10/25

5:43 pm-6:55 pm

Nonstop1h 12m

$292

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Sat 8/1

11:15 am-10:00 pm

2 stops9h 45m

Bozeman Gallatin Field

Sat 8/15

4:10 pm-9:25 pm

1 stop6h 15m

$292

SpokaneBozeman

GEG - BZN

GEGBZN

Spokane

Mon 8/24

5:10 pm-11:40 pm

1 stop5h 30m

Bozeman Gallatin Field

Sat 8/29

4:10 pm-9:25 pm

1 stop6h 15m

$295

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 10/9

3:57 pm-5:03 pm

Nonstop1h 06m

Bozeman Gallatin Field

Wed 10/14

8:00 am-12:35 pm

1 stop4h 35m

$297

SpokaneBillings

GEG - BIL

GEGBIL

Spokane

Thu 8/6

9:14 pm-9:10 am

1 stop10h 56m

Billings Logan Intl

Sun 8/9

5:53 pm-11:02 am

1 stop18h 09m

$317

SpokaneBillings

GEG - BIL

GEGBIL

Spokane

Fri 7/17

11:58 am-2:50 pm

1 stop25h 52m

Billings Logan Intl

Sun 7/19

5:56 pm-11:08 am

1 stop18h 12m

$408

SpokaneKalispell

GEG - FCA

GEGFCA

Spokane

Fri 7/10

11:58 am-10:36 am

1 stop21h 38m

Kalispell Glacier Park

Sun 7/12

10:14 am-5:31 pm

1 stop8h 17m

$500

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 Idaho to Montana

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

What is the cheapest month to fly to Montana?

The cheapest month to fly to Montana from Idaho is in October. Flight prices, which tend to average around $78, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Montana, with average flight prices from Idaho averaging around $92.

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

Our data shows that Friday is the least expensive day to fly to Montana. Tickets to fly out on this day can be as low as $137. The most expensive day to fly to Montana is Monday, with ticket prices averaging around $377.

What is the cheapest Idaho to Montana flight route?

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

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

There are 2 cabin classes available to choose from on Idaho to Montana 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 Idaho to Montana flights?

You could potentially save up to 30% on your flight if you consider stops on a Idaho to Montana flight.

Cheap Idaho to Montana flight deals and tips

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

Fastest flight time	3h 35m
Direct flights	Fri and Sat
Airports in Montana	32 airports

The fastest flight from Idaho to Montana takes 3h 35m

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

There are 32 airports in Montana. From Idaho there are direct flights to Bozeman Gallatin Field (BZN).

Search flight deals

Frequently asked questions about flying from Idaho to Montana

When did momondo last update prices for flights from Idaho to Montana?
Prices for flights from Idaho to Montana refresh daily.
How many operators does momondo search for flights from Idaho to Montana?
The number of operators available for flights from Idaho to Montana is 2 as of June 2026.
How old do you have to be to fly from Idaho to Montana?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Montana.
What documentation or ID do you need to fly to Montana?
The required travel and health documents for your Montana trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montana. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Idaho to Montana?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Idaho to Montana is Embraer 175 (100.00% of total bookings).

Best airlines flying from Idaho to Montana

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $88	Free Cancellation	Rating 7.8 8,453 reviews		Search Delta flights
Alaska Airlines	PriceFrom $99	Free Cancellation	Rating 7.9 12,590 reviews		Search Alaska Airlines flights

Why use momondo?

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

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

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

momondo does allow users to show only those flights to Montana from Idaho which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Idaho and Montana by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Montana from Idaho 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.