$119 Cheap Flights from Boise (BOI) to Missoula (MSO)

View $119 flight on Sat, Aug 23, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Missoula Intl. Airport (MSO)

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Cheap Flights from Boise to Missoula (BOI-MSO)

Prices were available within the past 7 days and start at $119 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Aug 12 - Wed, Aug 13
BOI
Boise
MSO
Missoula
$238 Roundtrip, found 8 hours ago
$238
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Tue, Aug 12 from Boise to Missoula, returning Wed, Aug 13, priced at $238 found 8 hours ago
Delta
Sat, Sep 27 - Wed, Oct 1
BOI
Boise
MSO
Missoula
$239 Roundtrip, found 1 day ago
$239
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep 27 from Boise to Missoula, returning Wed, Oct 1, priced at $239 found 1 day ago
Alaska Airlines
Sat, Aug 16 - Sat, Aug 23
BOI
Boise
MSO
Missoula
$241 Roundtrip, found 1 day ago
$241
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug 16 from Boise to Missoula, returning Sat, Aug 23, priced at $241 found 1 day ago
Hawaiian Airlines
Wed, Sep 17 - Wed, Oct 1
BOI
Boise
MSO
Missoula
$250 Roundtrip, found 1 day ago
$250
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Sep 17 from Boise to Missoula, returning Wed, Oct 1, priced at $250 found 1 day ago
Alaska Airlines
Tue, Sep 9 - Tue, Sep 16
BOI
Boise
MSO
Missoula
$262 Roundtrip, found 11 hours ago
$262
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Tue, Sep 9 from Boise to Missoula, returning Tue, Sep 16, priced at $262 found 11 hours ago
Alaska Airlines
Tue, Aug 12 - Wed, Aug 13
BOI
Boise
MSO
Missoula
$267 Roundtrip, found 8 hours ago
$267
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Tue, Aug 12 from Boise to Missoula, returning Wed, Aug 13, priced at $267 found 8 hours ago
Alaska Airlines
Sat, Aug 16 - Sat, Aug 23
BOI
Boise
MSO
Missoula
$268 Roundtrip, found 14 hours ago
$268
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Sat, Aug 16 from Boise to Missoula, returning Sat, Aug 23, priced at $268 found 14 hours ago
Alaska Airlines
Sat, Oct 11 - Tue, Oct 14
BOI
Boise
MSO
Missoula
$270 Roundtrip, found 6 days ago
$270
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Oct 11 from Boise to Missoula, returning Tue, Oct 14, priced at $270 found 6 days ago
American Airlines
Sat, Aug 16 - Sat, Aug 23
BOI
Boise
MSO
Missoula
$389 Roundtrip, found 1 day ago
$389
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Aug 16 from Boise to Missoula, returning Sat, Aug 23, priced at $389 found 1 day ago
United
Tue, Aug 19 - Sat, Aug 23
BOI
Boise
MSO
Missoula
$455 Roundtrip, found 4 days ago
$455
Roundtrip
found 4 days ago
Select United flight, departing Tue, Aug 19 from Boise to Missoula, returning Sat, Aug 23, priced at $455 found 4 days ago

Find the cheapest month to fly from Boise (BOI) to Missoula (MSO)

April is typically the cheapest month to fly

From $174 - $428 per traveler.

Graph displaying average flight prices per month

Alternative airports near Missoula

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Missoula Intl. MSO. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $367
MSO
Missoula Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $367
Flights from Boise (BOI) to Missoula (MSO)
Origin airport
Boise
Destination airport
Missoula Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$231
Distance
253 mi

Boise to Missoula Flights

The cheapest times to fly from Boise to Missoula

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boise to Missoula are during the month of August. You can find some of the cheapest flights from Boise to Missoula with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Missoula

Sunday is one of the best days to book for cheap flights from Boise to Missoula: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boise to Missoula

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boise to Missoula in 2025. You can also book with separate airlines for your outbound and return journeys, from $119 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boise to Missoula flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boise to Missoula airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Missoula Intl. Airport (MSO) cost?
Discover the latest flight deals from BOI to MSO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BOI to MSO?
The cheapest flights from BOI to MSO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BOI to MSO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BOI to MSO. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Boise Airport (BOI) to Missoula Intl. Airport (MSO)?
Nonstop flights from Boise Airport (BOI) to Missoula Intl. Airport (MSO) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BOI to MSO?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to Missoula Intl. Airport (MSO)?
To avoid potential delays on the Boise Airport (BOI) to Missoula Intl. Airport (MSO) route, travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Missoula Intl. Airport (MSO) last-minute?
Last-minute bookings from BOI to MSO are generally more expensive. For the lowest rates, start looking for flights early. That said, if you're flexible with your travel plans, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book a BOI to MSO flight and hotel package?
Compared with arranging flights and hotels separately, booking a BOI to MSO flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the stress out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Missoula Intl. Airport (MSO)?
If you reserved your BOI to MSO flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.