$43 Find Cheap Flights from Boise to the United States

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 the United States departing on 6/2. 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.
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Best United States Flight Deals from Boise

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

New York
New York1 stop$209
Los Angeles
Los Angelesnonstop$163
Las Vegas
Las Vegasnonstop$88
Miami
Miami1 stop$249
Chicago
Chicago1 stop$174
San Francisco
San Franciscononstop$137
Boston
Boston1 stop$306
Denver
Denvernonstop$131
Seattle
Seattlenonstop$131
Fort Lauderdale
Fort Lauderdale1 stop$251
Atlanta
Atlanta1 stop$271
Dallas
Dallas1 stop$177
Tampa
Tampa1 stop$228
Houston
Houston1 stop$214
Honolulu
Honolulu1 stop$367
San Diego
San Diego1 stop$139
Philadelphia
Philadelphia1 stop$307
New York
New York1 stop$209
Los Angeles
Los Angelesnonstop$163
Las Vegas
Las Vegasnonstop$88
Miami
Miami1 stop$249
Chicago
Chicago1 stop$174
San Francisco
San Franciscononstop$137
Boston
Boston1 stop$306
Denver
Denvernonstop$131
Seattle
Seattlenonstop$131
Fort Lauderdale
Fort Lauderdale1 stop$251
Atlanta
Atlanta1 stop$271
Dallas
Dallas1 stop$177
Tampa
Tampa1 stop$228
Houston
Houston1 stop$214
Honolulu
Honolulu1 stop$367
San Diego
San Diego1 stop$139
Philadelphia
Philadelphia1 stop$307

Cheap Flight Deals from Boise to the United States (BOI-US0)

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

Recent round-trip flight deals from Boise to the United States

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Boise to the United States.
Discover the best prices for you by selecting your travel dates on KAYAK.
Spirit Airlines Logo
12:16 pm - 1:03 pmBOI-LAS
1h 47mnonstop
Spirit Airlines Logo
8:35 am - 11:21 amLAS-BOI
1h 46mnonstop
$88Spirit Airlines
Find Deal
Mon, May 26 - Fri, May 30
Spirit Airlines Logo
12:16 pm - 1:03 pmBOI-LAS
1h 47mnonstop
Spirit Airlines Logo
8:35 am - 11:21 amLAS-BOI
1h 46mnonstop
$89Spirit Airlines
Find Deal
Mon, May 26 - Fri, May 30
Alaska Airlines Logo
7:06 pm - 7:44 pmBOI-SEA
1h 38mnonstop
Alaska Airlines Logo
9:25 pm - 11:45 pmSEA-BOI
1h 20mnonstop
$131Alaska Airlines
Find Deal
Tue, May 20 - Tue, May 20
Delta Logo
8:46 am - 9:30 amBOI-SEA
1h 44mnonstop
Delta Logo
1:16 pm - 3:50 pmSEA-BOI
1h 34mnonstop
$137Delta
Find Deal
Sat, Jun 7 - Sat, Jun 14
Delta Logo
7:35 am - 8:19 amBOI-SEA
1h 44mnonstop
Delta Logo
7:45 pm - 10:23 pmSEA-BOI
1h 38mnonstop
$147Delta
Find Deal
Fri, Jun 6 - Tue, Jun 10
Southwest Logo
5:25 pm - 8:50 pmBOI-LAS
4h 25m1 stop
Southwest Logo
6:35 am - 11:45 amLAS-BOI
4h 10m1 stop
$156Southwest
Find Deal
Wed, May 28 - Wed, Jun 4
Alaska Airlines Logo
7:45 am - 7:46 amBOI-GEG
1h 01mnonstop
Alaska Airlines Logo
9:46 am - 11:47 amGEG-BOI
1h 01mnonstop
$157Alaska Airlines
Find Deal
Wed, May 21 - Tue, May 27
Southwest Logo
6:30 pm - 7:20 pmBOI-LAS
1h 50mnonstop
Southwest Logo
9:45 pm - 12:25 amLAS-BOI
1h 40mnonstop
$170Southwest
Find Deal
Sun, Jun 15 - Wed, Jun 18
United Airlines Logo
5:10 am - 7:15 amBOI-DEN
2h 05mnonstop
United Airlines Logo
7:45 am - 9:46 amDEN-BOI
2h 01mnonstop
$189United Airlines
Find Deal
Tue, May 27 - Tue, Jun 3
United Airlines Logo
7:07 pm - 12:45 amBOI-LAS
6h 38m1 stop
United Airlines Logo
11:10 am - 4:41 pmLAS-BOI
4h 31m1 stop
$197United Airlines
Find Deal
Fri, Jun 6 - Mon, Jun 9
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KAYAK's insights & trends for Boise to the United States flights

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

What is the cheapest Boise to the United States flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Boise to the United States.

The cheapest ticket to the United States from Boise found in the last 72 hours was to Las Vegas, at $85 round-trip. The most popular route is from Boise (BOI) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $150.

Can I save money by flying with a layover from Boise to the United States?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $661, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Boise to the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to the United States, 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 the United States is January, when tickets cost $350 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $609 and $546 respectively.

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

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

Your flight ticket price will generally be cheaper if you fly to United States on a Wednesday and more expensive on a Monday. On your return trip to Boise, you should consider flying back on a Wednesday, and avoid Tuesdays for better deals.

How far in advance should I book a flight from Boise to the United States?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to the United States, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boise to the United States, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$43
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Boise to Las Vegas

Flights from Boise to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Boise to the United States 
Verified travelerFlew with Alaska AirlinesBOI-PDXFeb 2025
We try to have small carry on and all goes well. Flights are not long, so, plan ahead.
Verified travelerFlew with Alaska AirlinesBOI-BURJul 2024
If they ask you to check your bag at the gate because the flight is full, you get to board sooner even if you don't check ALL of your bags.
WALTERFlew with Alaska AirlinesBOI-BURJun 2024
Do not purchase tickets from Spirit airlines, those guys are jokes. Cancelled my family flight and made them spend one whole day at airport with no food.
RodneyFlew with Alaska AirlinesBOI-SEAMay 2024
Boarding seem to go well , the crew was good, friendly and helpful. Went smooth.

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Boise to the United States?

    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 the United States.

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

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

    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 from Boise to the United States 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 from Boise to the United States?

    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 from Boise to the United States 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 the United States?

    The cheapest time of day to fly to the United States is generally in the afternoon, when round-trip flights cost $414 on average. Morning departures are around 2% more expensive than evening flights, on average. The most expensive time of day to fly to the United States is generally in the morning, which is peak travel time and where the average cost of a ticket is $503.

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from Boise to the following destinations at these prices or less: Denver $196 one-way - $347 round-trip; Dallas $187 one-way - $402 round-trip; Seattle $174 one-way - $288 round-trip

Top 5 airlines serving from Boise to the United States

Need help choosing which airline to fly with from Boise to the United States? 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 9968 reviews
7.1Entertainment
8.5Crew
8.2Boarding
7.1Food
7.9Comfort
Airline reviews

It was all great all around. Will travel with Alaska next trip.

10.0 ExcellentLoyola, Apr 2025BOS - SEA
Read more Alaska Airlines reviews

It was all great all around. Will travel with Alaska next trip.

I got the last seat on the plane, in the back in the corner against the window, and I paid a competitive price for my ticket several weeks before the flight.

Everything was good. However, the selections of movies and TV shows were boring and unexciting. It was disappointing.

Long delay before boarding. By the time I was informed of the delay I was already at the gate.

There was no seating at the gate, no where to charge your devices, super crowded. Boarding in group F meant all luggage space was taken when it was time for me to board. The boarding crew was short with everyone and seemed irritated. The luggage space was insufficient, the seat was too small for me (6'4") and very uncomfortable trip. I was in a middle seat between a person snoring the whole trip and a person with very strong body odor. The flight crew was terse and unfriendly, seemed irritated and impatient. Yelled a lot at people with earbuds in, understandable. Finally, we arrived 10 minutes early, only to sit on the tarmac for 20 minutes and wait for a gate. Worst flight experience I've had in years.

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

Flight 351 SEA to BOI was terrible. We got to cruising altitude and I needed to use the restroom but the fasten seatbelt sign never came off. There was no turbulence and I'd felt the plane level off so I stood up to use the restroom about 15 minutes after we leveled off. The stewardess went over the intercom and said I needed to be seated because the captain hadn't turned off the fasten seatbelt sign....Which... Fair.... But not five minutes later she went and used the bathroom. Felt very unprofessional to leave a paying customer with a burning urethra for the entire flight and bark at them to sit down and still use the bathroom yourself. They never did turn off the seatbelt sign.

For longer trips, snacks are puny, boring and don’t have ANY nutritional value.

One of the worst check-in experiences ever. Apparently, we were overweight and had to completely repack. They tried to charge us an extra $35 per bag on top of the standard checked baggage fee we had already paid in advance. Surprisingly, we managed to fit everything into our carry-ons and stayed under their precious 50-pound limit. (By the way, 23 kg is actually 50.7 lbs, so we couldn’t even go slightly over 50 according to the very unfriendly agent.)

OUr pilot was very good and also a good landing in a very gusting Phoenix. Most important.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

A bit rush for transit. Food and entertainment are not available

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

Everything you need to know for your flight from Boise to the United States

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