$40 Find Cheap Flights from Boise to the United States - 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 the United States departing on 9/11. 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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Cheap Flights from Boise to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
New York1 stop$297
Los Angeles
Los Angeles1 stop$164
Las Vegas
Las Vegasnonstop$156
Chicago
Chicagononstop$335
San Francisco
San Francisco1 stop$147
Miami
Miami1 stop$240
Boston
Boston1 stop$313
Fort Lauderdale
Fort Lauderdale1 stop$289
Denver
Denvernonstop$180
Seattle
Seattlenonstop$157
Atlanta
Atlanta1 stop$240
Dallas
Dallas1 stop$250
Tampa
Tampa1 stop$250
Houston
Houston1 stop$188
San Diego
San Diego2 stops$181
Honolulu
Honolulu1 stop$404
Philadelphia
Philadelphia1 stop$276
New York
New York1 stop$297
Los Angeles
Los Angeles1 stop$164
Las Vegas
Las Vegasnonstop$156
Chicago
Chicagononstop$335
San Francisco
San Francisco1 stop$147
Miami
Miami1 stop$240
Boston
Boston1 stop$313
Fort Lauderdale
Fort Lauderdale1 stop$289
Denver
Denvernonstop$180
Seattle
Seattlenonstop$157
Atlanta
Atlanta1 stop$240
Dallas
Dallas1 stop$250
Tampa
Tampa1 stop$250
Houston
Houston1 stop$188
San Diego
San Diego2 stops$181
Honolulu
Honolulu1 stop$404
Philadelphia
Philadelphia1 stop$276

Book Cheap Boise to the United States Plane Tickets

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Sep 28 - Wed, Sep 30
Frontier Logo
3:52 pm - 10:46 am
BOI
-
SFO
19h 54m
1 stop
Frontier Logo
11:42 am - 2:57 pm
SFO
-
BOI
26h 15m
1 stop
$147Frontier
Thu, Oct 1 - Sun, Oct 4
Frontier Logo
3:52 pm - 4:43 pm
BOI
-
LAS
1h 51mnonstop
Frontier Logo
12:01 pm - 2:57 pm
LAS
-
BOI
1h 56mnonstop
$156Frontier
Mon, Aug 17 - Wed, Aug 19
Alaska Airlines Logo
4:15 pm - 5:12 pm
BOI
-
LAS
1h 57mnonstop
Alaska Airlines Logo
3:11 pm - 6:09 pm
LAS
-
BOI
1h 58mnonstop
$157Alaska Airlines
Sat, Sep 5 - Tue, Sep 8
Delta Logo
5:59 pm - 6:37 pm
BOI
-
SEA
1h 38mnonstop
Delta Logo
9:00 am - 11:34 am
SEA
-
BOI
1h 34mnonstop
$157Delta
Sat, Aug 29 - Sat, Sep 5
Alaska Airlines Logo
1:30 pm - 2:31 pm
BOI
-
LAS
2h 01mnonstop
Alaska Airlines Logo
3:11 pm - 6:09 pm
LAS
-
BOI
1h 58mnonstop
$159Alaska Airlines
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
3:30 pm - 9:00 pm
BOI
-
SEA
6h 30m
1 stop
Southwest Logo
5:55 am - 1:50 pm
SEA
-
BOI
6h 55m
1 stop
$177Southwest
Thu, Aug 13 - Sun, Aug 16
Southwest Logo
3:50 pm - 12:20 am
BOI
-
SEA
9h 30m
1 stop
Southwest Logo
6:55 am - 2:45 pm
SEA
-
BOI
6h 50m
1 stop
$182Southwest
Fri, Sep 11 - Mon, Sep 14
Delta Logo
5:59 pm - 6:41 pm
BOI
-
SEA
1h 42mnonstop
Delta Logo
7:59 pm - 10:34 pm
SEA
-
BOI
1h 35mnonstop
$187Delta
Mon, Aug 10 - Mon, Aug 17
United Airlines Logo
5:46 pm - 7:45 pm
BOI
-
DEN
1h 59mnonstop
United Airlines Logo
7:37 pm - 9:37 pm
DEN
-
BOI
2h 00mnonstop
$197United Airlines
Wed, Sep 9 - Sun, Sep 13
United Airlines Logo
10:31 am - 9:40 pm
BOI
-
LGA
9h 09m
1 stop
United Airlines Logo
6:10 am - 11:28 am
LGA
-
BOI
7h 18m
1 stop
$313United Airlines
Booking Insights

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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United States from Boise found in the last 5 days was to Las Vegas, at $130 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 5 days was $177.

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 $368, 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 $330 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $446 and $429 respectively.

Good to know

Low season

January

Cheapest flight

$40
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 11% lower on average.
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 
AllisonFlew with Alaska Airlines
BOI
-
SEA
Mar 2026
Boise airport is quick to get through security and very easy to navigate, so you don’t need to give yourself as much time as you normally would at larger airports.
Verified travelerFlew with Alaska Airlines
BOI
-
SAN
Jan 2026
Since I flew First Class I really have no advice! Everything was perfect! The ticketing agents were fantastic, flew through TSA Precheck, great announcements at the gate, quick boarding. My only suggestion is to check First Class prices before committing to the very expensive baggage fees and choosing a seat fee!!!
Verified travelerFlew with Alaska Airlines
BOI
-
SFO
Feb 2026
Dont wear all your clothes its not worth the discomfort to save on a checked bag.
AllieFlew with Alaska Airlines
BOI
-
PDX
May 2025
It is a ten minute walk from tarmac to baggage claim. If you have mobility issues, it is best to ask for a wheelchair. I did not receive a message on my phone regarding which carousel by bags would be loaded on and there was NOT a centralized notification board to inform you of the carousel
LisaFlew with Alaska Airlines
BOI
-
BUR
Jul 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.

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.

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 $202 one-way - $371 round-trip; Dallas $284 one-way - $457 round-trip; Seattle $236 one-way - $346 round-trip

Reviews of the 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
SouthwestOverall score based on 4241 reviews
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
Airline reviews

Friendly crew kept coming by to make sure all was ok, provide additional refreshments, etc.

10.0 ExcellentTamara, Jul 2026
MCO - DEN
Read more Southwest reviews

Friendly crew kept coming by to make sure all was ok, provide additional refreshments, etc.

It was good. Last flight was delayed but I always say that is in God's plan

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

Overall good, just screaming kids in the area the whole flight.

My experience will Southwest was good. I wish there was more entertainment and the boarding process was slow at time but other than that my experience was great definitely will be flying with SouthWest again.

Flight was delayed by 2 hours, meaning that a flight to Dwnver which should have arrived at 11pm came into the airport at 1 am. Made for a very long day.

I think Southwest is the number one airline that anyone can fly I have flown for the first time Frontier and what a joke and their customer service United was a very strange experience I'm only sticking to Southwest from here on out for sure

Great job! My family doesnt fly often but we felt safe 100%

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

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!

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

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

It was ok. First time flying with them to Boise Won’t do again

Our late returning flight was annoying. The plane was small, but it made boarding and disembarking quicker. I do wish they offered a gluten free snack.

Seat was too small for someone as tall as I am. I was behind an exit row making my leg room even less. There flights were delayed by multiple hours. Some weather related and others staff related. The plane was hot. Horrible experience.

The Atlanta airport had thunderstorms, which caused our flight to be delayed by multiple hours. Once we were able to board.the gate agent was rude and was trying to rush us onto the plane because the team in the plane was about to run out of hours once we were all aboard the plane they ran into an issue where the catering truck was filling up the back of the plane and they left and had to come back because they didn’t fill it up all the way, causing even more of a delay. My seat was very tight. I didn’t have a lot of legroom overall this was a miserable experience.

Flight delayed due to ground hold. Republic airways did a great job.

I missed the flight because the Minneapolis flight was 49 minutes LATE, and the Boise flight LEFT 24 minutes EARLY!

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

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

We flew business fares. Was amazing. However, the check in didn't offer business fares preboarding which is less hectic. 8/10 due to this. Staff compared to Canadian carriers go above and beyond. Would gladly fly United again.

It was extremely hot in the cabin the entire flight, vent air was worn

The Wi-Fi did not work, so you weren't able to watch entertainment on your own device. They did not have wired headphones so you couldn't watch it on the in-seat entertainment screen either. There was plenty of time to do a drink and snag service but the flight attendants chose not to.

Great experience, boarding was fast and efficient, so much so that we arrived to Chicago very early

Comfortable seating POS to IAH. Food options were satisfactory. Good seat from IAH to ANC. Food options could be better.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

Not one thing to like. Three flights all with “mechanical” delays. Never got to where I was going and spent additional $500 for a hotel room. American Airlines is the worst in the industry!

the seat was not padded at all - uncomfortable after a 3 hour flight

This flight was of course delayed because American cannot have flights that are not delayed.

Well, true to American Airlines, both of my flights were delayed. But it’s a good thing that American is so consistently incompetent because if the first flight was delayed in the second flight was on time then I might’ve had a problem..

I sat at the airport all night from 8 pm until midnight. The airline kept delaying the flight. They also kept moving us to different gates - 4 times. Then they told us we didn’t have a pilot so we had to wait. Then they cancelled the flight at midnight! I ended up having to rent a car to drive home. So i ended up not even being able to fly on the flight i paid for. Ridiculous, and no agents could help at all. I will not ever book this flight.

Not great. I understand delays happen due to weather and crew issues, but it was unacceptable that no agents were available at the counters inside the airport for customer service or help getting on a standby list. The app was not helpful either. I stood in line for an hour waiting for someone to show up at the gate to help me get on a standby flight. Customer care does not seem to be a priority.

Mechanical delay > Crew Time out. No communication to passengers. Crew time out was positioned as a surprise (even though it must have been know at the time of boarding that the crew would time out.

Long delays to board due to mechanical issues with plane.

Aside from the little delay, overall was flight good. Made it safely. Thanks!

Flight was delayed due to a steering issue with plane. The delay caused me to miss the connecting flight. The delay caused me to spend an extra 21 hours in airports and flights to get to my destination. The plane issue obviously should have been found and fixed before we even boarded. Ridiculous.

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

Information on your arrival and departure airports