BOI - BIL

$198 Find Cheap Flights from Boise to Billings - Compare and Save

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 9/3. 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

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Everything you should know

Cheapest round-trip
$333
Typical prices: $423-$490
Alaska Airlines
Fri 10/30Wed 11/4
BOI - BIL • 1 stop
Cheapest one-way
$198
Alaska Airlines
Thu 9/3
BOI - BIL • 1 stop
Top airlines
Cheapest • from $333 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and Billings. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $431 (round-trip)
Shortest trip • 4h 37m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Fri, Oct 30 - Wed, Nov 4
Alaska Airlines Logo
8:22 pm - 11:25 am
BOI
-
BIL
15h 03m
1 stop
Alaska Airlines Logo
6:00 am - 2:27 pm
BIL
-
BOI
8h 27m
1 stop
$333Alaska Airlines
Fri, Oct 30 - Tue, Nov 3
Delta Logo
11:32 am - 5:49 pm
BOI
-
BIL
6h 17m
1 stop
Delta Logo
12:58 pm - 6:00 pm
BIL
-
BOI
5h 02m
1 stop
$385Delta
Fri, Oct 30 - Wed, Nov 4
Alaska Airlines Logo
6:04 pm - 11:25 am
BOI
-
BIL
17h 21m
1 stop
Alaska Airlines Logo
6:00 am - 4:44 pm
BIL
-
BOI
10h 44m
2 stops
$393Alaska Airlines
Fri, Oct 16 - Tue, Oct 20
Alaska Airlines Logo
8:22 pm - 11:25 am
BOI
-
BIL
15h 03m
1 stop
Alaska Airlines Logo
7:41 am - 2:11 pm
BIL
-
BOI
6h 30m
1 stop
$394Alaska Airlines
Thu, Oct 8 - Sun, Oct 11
Alaska Airlines Logo
9:12 am - 3:04 pm
BOI
-
BIL
5h 52m
1 stop
Alaska Airlines Logo
7:32 pm - 1:50 pm
BIL
-
BOI
18h 18m
1 stop
$409Alaska Airlines
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
5:44 pm - 10:07 pm
BOI
-
BIL
4h 23m
1 stop
United Airlines Logo
7:00 am - 1:38 pm
BIL
-
BOI
6h 38m
1 stop
$415United Airlines
Sat, Aug 22 - Sat, Aug 29
Delta Logo
1:06 pm - 5:44 pm
BOI
-
BIL
4h 38m
1 stop
Delta Logo
6:24 pm - 10:46 pm
BIL
-
BOI
4h 22m
1 stop
$447Delta
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
5:00 am - 9:41 am
BOI
-
BIL
4h 41m
1 stop
United Airlines Logo
7:00 am - 1:38 pm
BIL
-
BOI
6h 38m
1 stop
$455United Airlines
Mon, Aug 24 - Fri, Aug 28
Delta Logo
6:45 pm - 10:25 pm
BOI
-
BIL
3h 40m
1 stop
Delta Logo
11:51 am - 5:55 pm
BIL
-
BOI
6h 04m
1 stop
$455Delta
Sun, Aug 16 - Fri, Aug 21
United Airlines Logo
5:44 pm - 10:07 pm
BOI
-
BIL
4h 23m
1 stop
United Airlines Logo
5:07 am - 9:35 am
BIL
-
BOI
4h 28m
1 stop
$580United 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 October.

Flight prices are typical for this route right now.

Flights to Billings from Boise usually cost between $330 and $387 in October.
The lowest price found in the past 5 days was $333 on Alaska Airlines (Oct 30-Nov 4).

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 February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are September and January, where the average cost of round-trip tickets is $598 and $550 respectively.

Good to know

Low season

August

Cheapest flight

$198
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 25% 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 5 days, the lowest price for a flight from Boise to Billings was $198 for a one-way ticket and $333 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?

    oneworld, and SkyTeam are the airline alliances operating flights between Boise and Billings, with oneworld 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 $444 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $418 and an overall rating of 7.8.

  • 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 airlines flying 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.
7.9
Alaska AirlinesOverall score based on 12749 reviews
8.5Crew
7.8Comfort
7.0Food
8.1Boarding
7.0Entertainment
Airline reviews

Eva Airlines attendants were wonderful. I really enjoyed the hot meals. They always greeted me with a warm smile. I'm looking forward to flying back to the USA with them again!

10.0 ExcellentPamela, Jun 2026
BOI - SEA
Read more Alaska Airlines reviews

Eva Airlines attendants were wonderful. I really enjoyed the hot meals. They always greeted me with a warm smile. I'm looking forward to flying back to the USA with them again!

Flight was cancelled which destroyed the rest of our journey.

WOuld have liked coffee or pretzels but other than that, crew and pilot and flight were great. Seat was great, too.

The overhead storage was already packed full when I boarded (I fly peasant class), but the attendant played some Tetris and made a spot for my small suitcase. Thanks!

The flight 2161 was cancelled after repeated delays; for some reason the crew and not the tower located in Billings, Montana made the call. A cancelled flight is not a big deal, it happens. It was very disappointing that upon cancelling the flight it was a free for all to get to the counter for rebooking. Priority seating and first class ticket holders should have been giving priority to get on the next available flight. Most would agree that the process of moving states away, w/a cat, is stressful. A cancelled flight, 90 minutes to rebook, no place to stay, medication that was to be refrigerated and trying to find a local pet friendly hotel significantly added to the stress. Had I been able to rebook (per priority boarding SOP) I could have called the place I had just checked out of as my room most likely was just as I'd left it, including with pet supplies (which also had to be repurchased). While waiting to rebook, many of us called Alaska Airlines 800 number hoping to get a new flight; the waiting time -- this is not a joke -- was eight (8) hours, which dropped to "just" two (2) hours about 45-minutes later. Due to the cancellation I had to spend $268.75 and I still have not been refunded for the change in ticket (first class to regular). Each time I've call, five times now, the wait time was absurd, or a message of call back is given. Hopefully visiting the airport and talking with an agent face to face will be the final chapter to this experience. Alaska has been my go to air travel for years, hopefully this trip was just a hiccup. A system that forces customer's to spend hours of their time (money) to get a just due refund is not a working system. I suggest Alaska Airlines hire more representatives to handle calls; time is more valuable than money, spending 90 minutes to rebook a flight, without the difference being automatic is absurd. There are things called computers, they do amazing things. Once the flight was cancelled, only three agents were working to rebook the PAX, This too was unacceptable. First class ticket holders pay for first-class service, this should include rebooking on flights that are cancelled. I recall a time when flights were cancelled the airline would offer a hotel should the next flight not be until the following day? I had no idea that was no longer SOP; many could return home, several of us could not. The agents were pleasant once the PAX had their turn to rebook, this was true down in baggage area as well. The flight out the next day was also what I'd come to find of Alaska Airlines.

Snacks for our toddler could have been better, front the standpoint of variety but that’s not any different from other airlines.

Wheelchair assistance was provided in Seattle and was very gratefully accepted. Thank you to the Alaska staff.

Food and entertainment aren’t a thing on these regional flights. But it was a smooth flight. Could see gorgeous countryside through the large windows. The earplugs are a nice touch for the prop engines but the hum of the engines did not bother me. Grateful the option exists to easily get from A to B.

The cold air vent in our seat isle had a leak in the overhead panel (10 C&D). On the ground and part of the flight After take off and before landing in Billings. We had very cold air blow on us.

I think everything was just fine I wouldn't change nothing

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

Awful. There was an unexpected delay of nearly three hours because there were not enough flight attendants. I understand this is likely due to FAA regulations; but in that case, Delta should coordinate with smaller airports such as RDU to have extra flight attendants on the ground and "on call". In addition, this was the second 2-hour+ delay to Boston on this route in one week.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Other airlines were canceling flights but Delta got us home. Crew was friendly and professional. It would have been nice to have had a little more notice about the delays because we had already arrived at the airport when the first of several delays were communicated but I understand that storm forecasting isn’t simple and we were grateful that Delta didn’t just cancel the flight.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

One of the best crews and best flights I’ve ever had! Really great experience

On time departure and early arrival. Kind and professional service from flight crew

The bus ride from the terminal to board the plane is uncomfortable and stressful when making a connection.

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

Information on your arrival and departure airports