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

Southwest, Delta, 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 May 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.

$114 Cheap Flights from Idaho to Montana in 2026

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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.

6:42 pm - 12:23 am

BOI

BZN

5h 41m

1 stop

5:15 am - 9:32 am

BZN

BOI

4h 17m

1 stop

$237Delta

Fri, Jun 19 - Sun, Jun 21

6:42 pm - 12:23 am

BOI

BZN

5h 41m

1 stop

6:00 am - 9:29 am

BZN

BOI

3h 29m

1 stop

$258Delta

Thu, Jul 16 - Sat, Jul 18

7:40 pm - 1:10 am

BOI

BZN

5h 30m

1 stop

7:15 pm - 1:10 am

BZN

BOI

5h 55m

1 stop

$277Southwest

Fri, Jun 12 - Fri, Jun 19

4:25 pm - 1:10 am

BOI

BZN

8h 45m

2 stops

7:15 pm - 1:10 am

BZN

BOI

5h 55m

1 stop

$323Southwest

Fri, Jun 12 - Fri, Jun 19

6:00 am - 12:16 pm

GEG

MSO

5h 16m

1 stop

8:02 pm - 10:36 pm

MSO

GEG

3h 34m

1 stop

$337Alaska Airlines

Wed, Jun 3 - Sat, Jun 6

9:09 am - 1:22 pm

BOI

BZN

4h 13m

1 stop

11:16 am - 6:17 pm

BZN

BOI

7h 01m

1 stop

$337Alaska Airlines

Tue, Oct 20 - Sat, Oct 24

5:46 pm - 10:30 pm

BOI

BTM

4h 44m

1 stop

10:15 am - 5:56 pm

BTM

BOI

7h 41m

1 stop

$384United Airlines

Sat, May 30 - Wed, Jun 3

5:46 pm - 10:30 pm

BOI

BTM

4h 44m

1 stop

10:15 am - 5:56 pm

BTM

BOI

7h 41m

1 stop

$450United Airlines

Thu, Jun 11 - Wed, Jun 17

8:47 pm - 9:10 am

GEG

BIL

11h 23m

1 stop

5:35 pm - 11:07 am

BIL

GEG

18h 32m

1 stop

$453Allegiant Air

Thu, Jun 11 - Thu, Jun 18

4:34 pm - 2:01 pm

GEG

MSO

20h 27m

1 stop

10:25 am - 7:57 pm

MSO

GEG

10h 32m

1 stop

$465Allegiant Air

Thu, Jun 4 - Sun, Jun 7

Delta flights from Idaho to Montana

Our best Delta deals on Idaho to Montana flight tickets

Delta

Jun 19

BOI6:42 pmBoise Air Term. Gowen Fld

5h 41m

1 stop

BZN12:23 amBozeman Gallatin Field

Jun 21

BZN5:15 amBozeman Gallatin Field

4h 17m

1 stop

BOI9:32 amBoise Air Term. Gowen Fld

$237

Delta

Jul 16

BOI6:42 pmBoise Air Term. Gowen Fld

5h 41m

1 stop

BZN12:23 amBozeman Gallatin Field

Jul 18

BZN6:00 amBozeman Gallatin Field

3h 29m

1 stop

BOI9:29 amBoise Air Term. Gowen Fld

$258

Delta

Aug 23

BOI8:25 amBoise Air Term. Gowen Fld

6h 01m

1 stop

BZN2:26 pmBozeman Gallatin Field

Aug 27

BZN6:00 amBozeman Gallatin Field

6h 10m

1 stop

BOI12:10 pmBoise Air Term. Gowen Fld

$297

Southwest flights from Idaho to Montana

Our best Southwest deals on Idaho to Montana flight tickets

Southwest

Jun 12

BOI7:40 pmBoise Air Term. Gowen Fld

5h 30m

1 stop

BZN1:10 amBozeman Gallatin Field

Jun 19

BZN7:15 pmBozeman Gallatin Field

5h 55m

1 stop

BOI1:10 amBoise Air Term. Gowen Fld

$277

Southwest

Jun 12

BOI4:25 pmBoise Air Term. Gowen Fld

8h 45m

2 stops

BZN1:10 amBozeman Gallatin Field

Jun 19

BZN7:15 pmBozeman Gallatin Field

5h 55m

1 stop

BOI1:10 amBoise Air Term. Gowen Fld

$323

Southwest

Jun 11

BOI7:40 pmBoise Air Term. Gowen Fld

5h 30m

1 stop

BZN1:10 amBozeman Gallatin Field

Jun 17

BZN3:55 pmBozeman Gallatin Field

8h 30m

2 stops

BOI12:25 amBoise Air Term. Gowen Fld

$333

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 6/19

6:42 pm-12:23 am

1 stop5h 41m

Bozeman Gallatin Field

Sun 6/21

5:15 am-9:32 am

1 stop4h 17m

$237

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Thu 7/16

6:42 pm-12:23 am

1 stop5h 41m

Bozeman Gallatin Field

Sat 7/18

6:00 am-9:29 am

1 stop3h 29m

$258

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 6/12

7:40 pm-1:10 am

1 stop5h 30m

Bozeman Gallatin Field

Fri 6/19

7:15 pm-1:10 am

1 stop5h 55m

$277

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Fri 6/12

4:25 pm-1:10 am

2 stops8h 45m

Bozeman Gallatin Field

Fri 6/19

7:15 pm-1:10 am

1 stop5h 55m

$323

Quickest round-trip

SpokaneMissoula

GEG - MSO

GEGMSO

Spokane

Wed 6/3

6:00 am-12:16 pm

1 stop5h 16m

Missoula Johnson-Bell Field

Sat 6/6

8:02 pm-10:36 pm

1 stop3h 34m

$337

BoiseBozeman

BOI - BZN

BOIBZN

Boise Air Term. Gowen Fld

Tue 10/20

9:09 am-1:22 pm

1 stop4h 13m

Bozeman Gallatin Field

Sat 10/24

11:16 am-6:17 pm

1 stop7h 01m

$337

BoiseButte

BOI - BTM

BOIBTM

Boise Air Term. Gowen Fld

Sat 5/30

5:46 pm-10:30 pm

1 stop4h 44m

Butte Silver Bow Co

Wed 6/3

10:15 am-5:56 pm

1 stop7h 41m

$384

BoiseButte

BOI - BTM

BOIBTM

Boise Air Term. Gowen Fld

Thu 6/11

5:46 pm-10:30 pm

1 stop4h 44m

Butte Silver Bow Co

Wed 6/17

10:15 am-5:56 pm

1 stop7h 41m

$450

SpokaneBillings

GEG - BIL

GEGBIL

Spokane

Thu 6/11

8:47 pm-9:10 am

1 stop11h 23m

Billings Logan Intl

Thu 6/18

5:35 pm-11:07 am

1 stop18h 32m

$453

SpokaneMissoula

GEG - MSO

GEGMSO

Spokane

Thu 6/4

4:34 pm-2:01 pm

1 stop20h 27m

Missoula Johnson-Bell Field

Sun 6/7

10:25 am-7:57 pm

1 stop10h 32m

$465

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 August is another great option to travel to Montana, with average flight prices from Idaho averaging around $78.

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 $353.

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

Can stopping save me money on Idaho to Montana flights?

You could potentially save up to 22% 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	1h 08m
Direct flights	Fri
Airports in Montana	32 airports

The fastest flight from Idaho to Montana takes 1h 08m

Direct flights go from Idaho to Montana on Friday. 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 May 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 7.9 8,453 reviews		Search Delta flights
Alaska Airlines	PriceFrom $99	Free Cancellation	Rating 7.9 12,367 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.