$145 Cheap Flights from Billings (BIL) to Boise (BOI)

View $145 flight on Sat, Sep 6, 2025Opens in a new window

Popular airlines from Billings Logan Intl. Airport (BIL) to Boise Airport (BOI)

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Cheap Flights from Billings to Boise (BIL-BOI)

Prices were available within the past 7 days and start at $145 for one-way flights and $262 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Sat, Oct 4 - Tue, Oct 21
BIL
Billings
BOI
Boise
$262 Roundtrip, found 6 hours ago
$262
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from Billings to Boise, returning Tue, Oct 21, priced at $262 found 6 hours ago
Alaska Airlines
Wed, Sep 10 - Tue, Sep 16
BIL
Billings
BOI
Boise
$269 Roundtrip, found 4 days ago
$269
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, Sep 10 from Billings to Boise, returning Tue, Sep 16, priced at $269 found 4 days ago
Hawaiian Airlines
Sat, Oct 4 - Sat, Oct 18
BIL
Billings
BOI
Boise
$272 Roundtrip, found 6 hours ago
$272
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from Billings to Boise, returning Sat, Oct 18, priced at $272 found 6 hours ago
Delta
Wed, Aug 20 - Tue, Aug 26
BIL
Billings
BOI
Boise
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 20 from Billings to Boise, returning Tue, Aug 26, priced at $274 found 1 day ago
Delta
Sat, Aug 30 - Wed, Sep 3
BIL
Billings
BOI
Boise
$282 Roundtrip, found 23 hours ago
$282
Roundtrip
found 23 hours ago
Select Delta flight, departing Sat, Aug 30 from Billings to Boise, returning Wed, Sep 3, priced at $282 found 23 hours ago
Alaska Airlines
Tue, Sep 2 - Wed, Sep 3
BIL
Billings
BOI
Boise
$290 Roundtrip, found 23 hours ago
$290
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Tue, Sep 2 from Billings to Boise, returning Wed, Sep 3, priced at $290 found 23 hours ago
United
Wed, Sep 3 - Tue, Sep 9
BIL
Billings
BOI
Boise
$291 Roundtrip, found 22 hours ago
$291
Roundtrip
found 22 hours ago
Select United flight, departing Wed, Sep 3 from Billings to Boise, returning Tue, Sep 9, priced at $291 found 22 hours ago
Alaska Airlines
Tue, Sep 16 - Sat, Sep 20
BIL
Billings
BOI
Boise
$292 Roundtrip, found 7 hours ago
$292
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Tue, Sep 16 from Billings to Boise, returning Sat, Sep 20, priced at $292 found 7 hours ago
Hawaiian Airlines
Thu, Oct 2 - Tue, Oct 21
BIL
Billings
BOI
Boise
$292 Roundtrip, found 6 hours ago
$292
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Thu, Oct 2 from Billings to Boise, returning Tue, Oct 21, priced at $292 found 6 hours ago
American Airlines
Wed, Sep 3 - Tue, Sep 9
BIL
Billings
BOI
Boise
$409 Roundtrip, found 22 hours ago
$409
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Wed, Sep 3 from Billings to Boise, returning Tue, Sep 9, priced at $409 found 22 hours ago

Find the cheapest month to fly from Billings (BIL) to Boise (BOI)

February is typically the cheapest month to fly

From $227 - $543 per traveler.

Graph displaying average flight prices per month

Flights from Billings (BIL) to Boise (BOI)
Origin airport
Logan Intl.
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$259
Distance
407 mi

Billings to Boise Flights

The cheapest times to fly from Billings to Boise

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 Billings to Boise are during the month of October. You can find some of the cheapest flights from Billings to Boise with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Billings to Boise

Sunday is one of the best days to book for cheap flights from Billings to Boise: 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 Billings to Boise

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 Billings to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $145 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 Billings to Boise 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 Billings to Boise 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 Logan Intl. Airport (BIL) to Boise Airport (BOI) cost?
Discover the latest flight deals from BIL to BOI 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 BIL to BOI?
The cheapest flights from BIL to BOI 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 BIL to BOI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BIL to BOI. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Logan Intl. Airport (BIL) to Boise Airport (BOI)?
Direct flights from Logan Intl. Airport (BIL) to Boise Airport (BOI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BIL to BOI?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a number of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BIL) to Boise Airport (BOI)?
To avoid potential delays on the Logan Intl. Airport (BIL) to Boise Airport (BOI) route, travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 Logan Intl. Airport (BIL) to Boise Airport (BOI) last-minute?
Booking your plane ticket from BIL to BOI shortly before your journey is generally more expensive. But if there's some wiggle room with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a BIL to BOI flight and hotel package?
Compared with arranging hotels and flights separately, booking a BIL to BOI flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the hassle 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 Logan Intl. Airport (BIL) to Boise Airport (BOI)?
In most instances, you're able to reschedule or cancel your BIL to BOI flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you need further information, head to our Customer Service portal.

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*Available to One Key members.