BOI - BIL

$336 Find Cheap Flights from Boise to Billings

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Billings departing on 12/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Billings

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Billings, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Billings, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$336
Typical prices: $336-$449
Alaska Airlines
Wed 4/1Sun 4/5
BOI - BIL • 1 stop
Cheapest one-way
$333
Typical prices: $265-$475
American Airlines
Wed 12/24
BOI - BIL • 1 stop
Top airlines
Delta
Cheapest • from $504 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
August
Cheapest • 21% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Billings!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Billings (BOI-BIL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Billings that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Billings

Wed, Apr 1 - Sun, Apr 5
Alaska Airlines Logo
6:00 pm - 10:43 pm
BOI
-
BIL
4h 43m1 stop
Alaska Airlines Logo
6:00 am - 12:11 pm
BIL
-
BOI
6h 11m1 stop
$336Alaska Airlines
Wed, Apr 1 - Sun, Apr 5
Alaska Airlines Logo
7:00 am - 1:15 pm
BOI
-
BIL
6h 15m2 stops
Alaska Airlines Logo
6:00 am - 10:34 am
BIL
-
BOI
4h 34m1 stop
$426Alaska Airlines
Wed, Apr 1 - Sun, Apr 5
Alaska Airlines Logo
7:00 am - 1:15 pm
BOI
-
BIL
6h 15m2 stops
Alaska Airlines Logo
6:00 am - 12:11 pm
BIL
-
BOI
6h 11m1 stop
$436Alaska Airlines
Thu, Jan 1 - Sun, Jan 4
Multiple Airlines Logo
12:38 pm - 7:56 am
BOI
-
BIL
19h 18m2 stops
Multiple Airlines Logo
10:05 pm - 3:04 pm
BIL
-
BOI
16h 59m1 stop
$437Multiple Airlines
Wed, Dec 31 - Sun, Jan 4
Delta Logo
5:50 am - 11:12 am
BOI
-
BIL
5h 22m1 stop
Delta Logo
6:20 pm - 12:19 am
BIL
-
BOI
5h 59m1 stop
$504Delta
Wed, Apr 1 - Sun, Apr 5
Alaska Airlines Logo
7:00 am - 1:15 pm
BOI
-
BIL
6h 15m2 stops
Alaska Airlines Logo
3:35 pm - 10:21 pm
BIL
-
BOI
6h 46m2 stops
$536Alaska Airlines
Wed, Apr 1 - Sun, Apr 5
Alaska Airlines Logo
7:00 am - 1:15 pm
BOI
-
BIL
6h 15m2 stops
Alaska Airlines Logo
3:35 pm - 11:52 pm
BIL
-
BOI
8h 17m2 stops
$546Alaska Airlines
Thu, Jan 1 - Sun, Jan 4
United Airlines Logo
6:15 am - 1:24 pm
BOI
-
BIL
7h 09m1 stop
United Airlines Logo
5:50 pm - 9:41 pm
BIL
-
BOI
27h 51m1 stop
$680United Airlines
Wed, Dec 31 - Sun, Jan 4
United Airlines Logo
6:35 am - 9:24 pm
BOI
-
BIL
14h 49m2 stops
United Airlines Logo
2:40 pm - 10:01 am
BIL
-
BOI
19h 21m1 stop
$805United Airlines
Thu, Jan 1 - Sun, Jan 4
Alaska Airlines Logo
4:16 pm - 12:32 am
BOI
-
BIL
8h 16m2 stops
Alaska Airlines Logo
6:00 am - 12:42 pm
BIL
-
BOI
6h 42m2 stops
$989Alaska Airlines
Booking Insights

KAYAK's insights & trends for Boise to Billings flights

Get data-powered insights and trends into flights from Boise to Billings to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boise to Billings?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to Billings departing in April.

What’s the cheapest day of the week to fly from Boise to Billings?

The average price of all round-trip flights from Boise to Billings clicked on KAYAK for each day over the last 12 months.

For Boise to Billings, Friday is the cheapest day to fly on average and Monday is the most expensive. Flying from Billings back to Boise, the best deals are generally found on Saturday, with Monday being the most expensive.

What is the cheapest month to fly from Boise to Billings?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Billings, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boise to Billings is August, where tickets cost $351 (return) on average. On the other hand, the most expensive months are September and February, where the average cost of round-trip tickets is $606 and $554 respectively.

Good to know

Low seasonFebruary
Cheapest flight$333
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Boise to Billings

When to book flights from Boise to Billings

Are your dates flexible? Find out the best times to travel from Boise to Billings based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boise to Billings

  • What is the cheapest flight from Boise to Billings?

    In the last 3 days, the lowest price for a flight from Boise to Billings was $333 for a one-way ticket and $336 for a round-trip.

  • Do I need a passport to fly between Boise and Billings?

    No, a passport isn't needed to fly from Boise to Billings. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Boise to Billings?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boise to Billings?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Boise and Billings, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Boise to Billings, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Boise to Billings are Alaska Airlines and Delta. With an average price for the route of $399 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $363 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Boise to Billings?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boise to Billings.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to Billings?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings from Boise is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boise to Billings?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Billings with an airline and back to Boise with another airline. Booking your flights between Boise and BIL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to Billings?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Billings from Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Boise to Billings

 
See real verified KAYAK customer reviews for airlines flying from Boise to Billings. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boise to Billings? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11478 reviews
7.8Comfort
7.1Food
8.1Boarding
8.5Crew
7.0Entertainment
Airline reviews

Great …check-in was a little messy but went by quick.

10.0 ExcellentTony, Dec 2025
RDU - SEA
Read more Alaska Airlines reviews

Great …check-in was a little messy but went by quick.

I don’t think Alaska coordinates with Kayak. I did not get a “check-in” email inviting me to check in 24 hours in advance. Had to wait 20+ minutes to get a wheel chair.

Alaska Airlines has horrible customer service. After sitting in a packed airplane for over an hour, they decided to cancel our flight and had us deplane. Instead of helping us nearby, we had to ride two trains (in Seattle Airport), from the S-Gates to the C-Gates; only to stand in a line for 3 and a half hours. Throughout the 3 hours, there was often 1 agent at the customer service counter to help the passengers trying to get information and accommodation on a flight that they cancelled. Do better!

The plane was delayed which was annoying. No seat back screens is a bummer. Staff if great

I got my seat changed last minute so a parent coumd sit with their child wich i found out was a teenager

I was standing in line to use the restroom. A First Class passenger wanted to use the restroom after me, but Jaques made me wait on Flight 3418 from BOI to SJC on December 12, 2025. I felt this was inappropriate and rude.

Larger seats with a bit more room would be good! Thanks for all your hard work. I think we are all feeling a bit down these days economically and your positive attitudes, both from SJC to Seattle and from Seattle to Bozeman makes more of a difference than you can see! Thank you and Merry Christmas! I hope all your financial needs are met and that very good things come your way.

I purchased a 1st class ticket and unfortunately the main flight attendant was not the best and seemed more interested in her phone than the passengers at times. Then the plane didn’t get restocked and the only snacks for this flight were pretzels. However I would like to say that the rest of the flight crew and ground crew at the airport we’re great, especially the people that wheeled me around the airport some and then the one getting me to the plane and the automated wheelchair that wheeled me through the airport.

Both of my planes were delayed which is less than ideal but it's alright, unsurprising with very small flights.

Excellent, I traveled with my adult mom, she was happy for your service, especially, because you helped her with the reel chair. Only a little thing, in the airplane to Boise, the seat was very worn.

Great. I had to modify a flight. That was easy and free. Thank You

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Everything you need to know for your flight from Boise to Billings

Information on your arrival and departure airports