$146 Cheap Flights from Billings (BIL) to Boise (BOI)

View $146 flight on Tue, Nov 18, 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 $146 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
Tue, Oct 28 - Tue, Nov 4
BIL
Billings
BOI
Boise
$262 Roundtrip, found 11 hours ago
$262
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Tue, Oct 28 from Billings to Boise, returning Tue, Nov 4, priced at $262 found 11 hours ago
Alaska Airlines
Sat, Sep 27 - Sat, Oct 4
BIL
Billings
BOI
Boise
$272 Roundtrip, found 3 hours ago
$272
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Sat, Sep 27 from Billings to Boise, returning Sat, Oct 4, priced at $272 found 3 hours ago
Delta
Sat, Oct 25 - Tue, Nov 4
BIL
Billings
BOI
Boise
$274 Roundtrip, found 11 hours ago
$274
Roundtrip
found 11 hours ago
Select Delta flight, departing Sat, Oct 25 from Billings to Boise, returning Tue, Nov 4, priced at $274 found 11 hours ago
Hawaiian Airlines
Tue, Oct 14 - Tue, Oct 21
BIL
Billings
BOI
Boise
$277 Roundtrip, found 1 day ago
$277
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Oct 14 from Billings to Boise, returning Tue, Oct 21, priced at $277 found 1 day ago
Alaska Airlines
Sat, Sep 27 - Sat, Oct 4
BIL
Billings
BOI
Boise
$282 Roundtrip, found 3 hours ago
$282
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Sat, Sep 27 from Billings to Boise, returning Sat, Oct 4, priced at $282 found 3 hours ago
Delta
Wed, Oct 15 - Tue, Oct 28
BIL
Billings
BOI
Boise
$283 Roundtrip, found 1 day ago
$283
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Oct 15 from Billings to Boise, returning Tue, Oct 28, priced at $283 found 1 day ago
Hawaiian Airlines
Mon, Oct 27 - Tue, Nov 4
BIL
Billings
BOI
Boise
$292 Roundtrip, found 11 hours ago
$292
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Mon, Oct 27 from Billings to Boise, returning Tue, Nov 4, priced at $292 found 11 hours ago
United
Tue, Sep 30 - Sat, Oct 4
BIL
Billings
BOI
Boise
$293 Roundtrip, found 6 hours ago
$293
Roundtrip
found 6 hours ago
Select United flight, departing Tue, Sep 30 from Billings to Boise, returning Sat, Oct 4, priced at $293 found 6 hours ago
Delta
Tue, Nov 25 - Tue, Dec 2
BIL
Billings
BOI
Boise
$295 Roundtrip, found 14 hours ago
$295
Roundtrip
found 14 hours ago
Select Delta flight, departing Tue, Nov 25 from Billings to Boise, returning Tue, Dec 2, priced at $295 found 14 hours ago
American Airlines
Sun, Aug 31 - Wed, Sep 17
BIL
Billings
BOI
Boise
$489 Roundtrip, found 5 days ago
$489
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Aug 31 from Billings to Boise, returning Wed, Sep 17, priced at $489 found 5 days ago

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

February is typically the cheapest month to fly

From $228 - $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 $146 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?
Get a cheap one-way flight from $146 or cheap return flight from $262 from Logan Intl. Airport (BIL) to Boise Airport (BOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BIL) to Boise Airport (BOI)?
October is the least expensive month to fly from BIL to BOI. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from Logan Intl. Airport (BIL) to Boise Airport (BOI)?
To find the cheapest airline that'll fly you from BIL to BOI, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
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.