BOI

$39 Find Cheap Flights to Boise

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boise departing on 9/28. 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

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These are the airlines KAYAK users have selected most often from within our search results for flights to Boise
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Cheap Flights to Boise

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Boise 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 to Boise

Fri, Oct 3 - Sun, Oct 5
Frontier Logo
9:38 am - 11:37 amDEN-BOI
1h 59mnonstop
Frontier Logo
12:22 pm - 2:45 pmBOI-DEN
2h 23mnonstop
$76Frontier
Find Deal
Thu, Sep 11 - Sun, Sep 14
Frontier Logo
9:38 am - 11:37 amDEN-BOI
1h 59mnonstop
Frontier Logo
12:22 pm - 2:45 pmBOI-DEN
2h 23mnonstop
$78Frontier
Find Deal
Wed, Sep 10 - Sat, Sep 13
Delta Logo
7:55 pm - 10:32 pmSEA-BOI
1h 37mnonstop
Delta Logo
2:05 pm - 2:45 pmBOI-SEA
1h 40mnonstop
$117Delta
Find Deal
Wed, Sep 10 - Wed, Sep 17
Alaska Airlines Logo
2:30 pm - 4:50 pmPDX-BOI
1h 20mnonstop
Alaska Airlines Logo
4:00 pm - 4:22 pmBOI-PDX
1h 22mnonstop
$117Alaska Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 13
Alaska Airlines Logo
7:50 am - 12:03 pmSEA-BOI
3h 13m1 stop
Alaska Airlines Logo
4:00 pm - 8:35 pmBOI-SEA
5h 35m1 stop
$131Alaska Airlines
Find Deal
Sat, Sep 6 - Sun, Sep 7
Delta Logo
1:10 pm - 3:40 pmSEA-BOI
1h 30mnonstop
Delta Logo
7:30 am - 8:12 amBOI-SEA
1h 42mnonstop
$137Delta
Find Deal
Wed, Sep 10 - Wed, Sep 17
Southwest Logo
5:45 pm - 11:20 pmPDX-BOI
4h 35m1 stop
Southwest Logo
5:25 pm - 10:10 pmBOI-PDX
5h 45m1 stop
$141Southwest
Find Deal
Fri, Oct 24 - Sun, Oct 26
Southwest Logo
6:50 pm - 11:20 pmBUR-BOI
3h 30m1 stop
Southwest Logo
12:10 pm - 1:10 pmBOI-BUR
2h 00mnonstop
$145Southwest
Find Deal
Wed, Oct 15 - Tue, Oct 21
United Airlines Logo
7:00 am - 1:43 pmSEA-BOI
5h 43m1 stop
United Airlines Logo
7:05 pm - 11:15 pmBOI-SEA
5h 10m1 stop
$237United Airlines
Find Deal
Fri, Sep 5 - Sat, Sep 6
United Airlines Logo
6:21 pm - 10:21 pmDFW-BOI
5h 00m1 stop
United Airlines Logo
7:45 am - 4:22 pmBOI-DFW
7h 37m1 stop
$242United Airlines
Find Deal

Expert advice for your flight to Boise

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Delta

Delta's Comfort Plus offers up to three inches more legroom than Main Cabin.


Delta offers free Wi-Fi for SkyMiles members on domestic flights.

Read more about Deltaby Stefanie Waldek
Alaska Airlines

Alaska Airlines offers a 20-minute baggage guarantee or 2,500 bonus miles if delayed.


Mileage Plan members can check a case of wine for free from select airports.

United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


United offers Priority Boarding for Zone 2, avoiding overhead bin space issues.

American Airlines

American's Main Cabin Extra offers early boarding and complimentary drinks for a fee.


American offers 20 minutes of free Wi-Fi by watching a short advertisement.

Allegiant Air

Allegiant's Legroom+ offers extra space in exit rows on select routes.


Allegiant's Trip Flex allows one free change or cancellation for a fee.

Spirit Airlines

Spirit's Big Front Seat offers 20-inch width and 11” more legroom for a fee.


Spirit's Wi-Fi offers gate-to-gate connectivity, with browsing and streaming packages available.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Delta and United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Allegiant Air

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Joe Cortez

Joe Cortez

Expert on Spirit Airlines

Joe Cortez

Joe Cortez

Joe Cortez is a seasoned managing editor in aviation with over a decade of industry experience. His work has been featured on prominent platforms such as FlyerTalk and TripSavvy, establishing him as a respected voice in aviation journalism.

Read more
Booking Insights

KAYAK's insights & trends for flights to Boise

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

What is the cheapest flight to Boise?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Boise was found on the route from Denver, at $76 return. The most popular connection is from Los Angeles to Boise and KAYAK users have found round-trip deals for as low as $133 in the last 3 days.

How much is a flight to Boise?

The average and cheapest price for all round-trip flights to Boise from each origin found by users searching on KAYAK in the last month.

A flight to Boise costs $229 on average. The cheapest price found on KAYAK in the last 2 weeks cost $39 and departed from Las Vegas. The most popular routes on KAYAK are San Francisco to Boise which costs $235 on average, and Phoenix to Boise, which costs $226 on average.

See prices from:

What is the cheapest month to fly to Boise?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Boise, 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 to Boise is January, where tickets cost $352 on average for return flights. On the other hand, the most expensive months are December and November, where the average cost of tickets from the United States is $735 and $526 respectively. For one-way flights, the best month to travel is April with an average price of $281.

What is a good deal for flights to Boise?

If you’re looking for cheap airfare to Boise, 25% of our users found tickets to Boise for the following prices or less: From Santa Ana $134 round-trip, from Spokane $137 round-trip, from Portland $177 round-trip.

Good to know - Book Cheap Boise Plane Tickets

Low seasonJanuary
Cheapest flight$39
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Denver to Boise

When to book flights to Boise

Are your dates flexible? Find out the best times to travel to Boise 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. The information is for flights to Boise based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Boise flights

  • What is the cheapest flight to Boise?

    In the last 3 days, the cheapest flight deal to Boise was found on the route from Denver, at $76 return. The most popular connection is from Los Angeles to Boise and KAYAK users have found round-trip deals for as low as $133 in the last 3 days.

  • How far is Boise Air Term. Gowen Fld Airport from central Boise?

    The distance between Boise Air Term. Gowen Fld Airport and downtown Boise is 3 miles.

  • What is the name of Boise’s airport?

    Boise is served by Boise Air Term. Gowen Fld Airport, also commonly referred to as Air Term Gowen Fld, Air Term. Gowen Fld, or Boise. The airport code is BOI.

  • How much is a flight to Boise?

    On average, a flight to Boise costs $229. The cheapest price found on KAYAK in the last 2 weeks cost $39 and departed from Las Vegas Harry Reid Intl Airport.

  • What is the cheapest day to fly to Boise?

    Based on KAYAK data, the cheapest day to fly to Boise is Friday where round-trip tickets can be as cheap as $341. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $436 on average.

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

    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 to Boise.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 to Boise?

    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 Boise with an airline and back with another airline.

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

    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 Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Boise?

    The cheapest time of day to fly to Boise is generally at night, when round-trip flights cost $410 on average. The most expensive time of day to fly to Boise is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $684.

Top tips for finding cheap flights to Boise

  • Looking for cheap airfare to Boise? 25% of our users found round-trip tickets to Boise for the following prices or less: From San Diego $142, from Phoenix Sky Harbor Intl $261, from Chicago O'Hare Intl $267
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boise flight deals.

Reviews of the top 5 airlines flying to Boise

 
See real verified KAYAK customer reviews for airlines flying to Boise. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United States to Boise. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Boise? 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 10000 reviews
8.5Crew
7.1Food
7.8Comfort
7.0Entertainment
8.1Boarding
Airline reviews

Didn't care for the crowding at the gate area at SEA TAC. Not a fault of the airline.

8.0 ExcellentAnonymous, Aug 2025SEA - PHX
Read more Alaska Airlines reviews

Didn't care for the crowding at the gate area at SEA TAC. Not a fault of the airline.

Flight was switched to a different airline. Caused scheduling issues. Flight delayed an hour, but arrived only 20 minutes late thanks to tail winds.

Loved the staff ease of flying snacks and free movies and WiFi

you could have gotten me there on the day I was supposed to be there, not a day later. Paid for 3 nights at a VRBO and got to spend only 2 nights there.

Would have been nice if my flight was on time and I didn't miss my connection and had to spend the night in Seattle, losing one night at the VRBO I paid for in Sitka. And, my connecting flight was still at the gate when my flight was taxiing to it's gate. But, it took off. Too bad for me. I really can't believe you even want me to review or comment on my experience.

We did not realize there wasn't any food apart from a small packet of pretzels - I dropped one and nearly cried.

boarding was late worst was going back LAX to SFO delayed not once ? but TWICE😡I was at the airport practically almost 5 hours of previous time , very inconvenient! i would have spend longer time with family , I was wanting to avoid TSA line? but it just got me to spend unwanted time @ d airport

Flight crew and gate staff were very polite and professional. They were very helpful and made my trip smooth and trouble free

Upon arrival I was disappointed that the assist I requested to get to the baggage claim wasn't provided. The entire baggage area was not clearly marked and I wanted to store my baggage overnight, that wasn't available. I had to take it on the shuttle to the hotel!

The staff was extremely pleasant, and the ride was uneventful… If I were going to a place they serviced, I would take Alaska again

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Other than a bit of a delay, everything was good. Again, the boarding process and picking seats is the only thing I don't enjoy.

If we are going to have to pay for luggage, make it easier to do. Put something on the app during check-in so I don't need to do it at the kiosk. I've done it twice recently and I ended up having to pay at the desk because something went wrong at the kiosk in Tampa.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

WiFi did not work. For as outrageous as these flights cost, when they’re advertised with certain services/ features they should be in working order

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.

Having to up charge for a seat assignment is not good. Delta can do better

I liked the friendliness of the staff. The cleanliness of all 3 planes.

Was charged for my luggage despite having been on one ticket from an international flight. Too tired to argue after 15 hours on flight. Was charged for rechecking it at JFK airport. Not sure why those off Kenya Airways were required to do that.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

Sat on the ground in Cincinnati for 50 minutes before deplaning

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Was not able to watch most shows on the entertainment site. They would not load

As smooth as you can expect. Some issues with boarding because the previous plane took forever to deplane but overall, a good experience.

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

There is no room, no gluten free options, or any free internet/entertainment. You have to bring your own tablet or smartphone because there are no screens.

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Flights with popular airlines flying to Boise

Flights from the other most popular airlines that fly from the United States to Boise according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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