BOI - SJO

$154 Find Cheap Flights from Boise to San José

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 San José departing on 4/15. 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 San José

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

Cheapest round-trip
$373
Typical prices: $551-$669
Multiple Airlines
Thu 5/14Tue 5/19
BOI - SJO • 2 stops
Cheapest one-way
$154
Typical prices: $142-$238
Multiple Airlines
Wed 4/15
BOI - SJO • 2 stops
Top airlines
United Airlines
Cheapest • from $374 (round-trip)
Alaska Airlines
Best reviews • 8.0 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 San José. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
San Francisco (SFO)
Cheapest • Avg $559 (round-trip)
Dallas (DFW)
Shortest trip • 9h 14m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 39% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San José!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to San José (BOI-SJO)

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

Thu, May 14 - Tue, May 19
Multiple Airlines Logo
8:38 am - 11:15 pm
BOI
-
SJO
14h 37m
2 stops
Multiple Airlines Logo
5:45 am - 10:58 pm
SJO
-
BOI
17h 13m
2 stops
$373Multiple Airlines
Sat, Apr 25 - Fri, May 1
United Airlines Logo
7:03 pm - 7:15 am
BOI
-
SJO
12h 12m
1 stop
United Airlines Logo
1:25 pm - 9:54 am
SJO
-
BOI
20h 29m
2 stops
$374United Airlines
Sat, May 2 - Sat, May 16
Multiple Airlines Logo
7:14 pm - 8:45 am
BOI
-
SJO
13h 31m
2 stops
Multiple Airlines Logo
5:45 am - 10:58 pm
SJO
-
BOI
17h 13m
2 stops
$375Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
1:41 pm - 1:22 pm
BOI
-
SJO
23h 41m
1 stop
American Airlines Logo
2:22 pm - 12:51 pm
SJO
-
BOI
22h 29m
2 stops
$381American Airlines
Mon, Mar 2 - Tue, Mar 10
Multiple Airlines Logo
8:12 pm - 11:15 pm
BOI
-
SJO
26h 03m
2 stops
Multiple Airlines Logo
4:15 pm - 11:00 pm
SJO
-
BOI
30h 45m
2 stops
$383Multiple Airlines
Sat, Aug 8 - Sat, Aug 15
Multiple Airlines Logo
8:21 am - 11:15 pm
BOI
-
SJO
14h 54m
2 stops
Multiple Airlines Logo
5:45 am - 10:51 pm
SJO
-
BOI
17h 06m
2 stops
$388Multiple Airlines
Fri, May 8 - Sat, May 16
Multiple Airlines Logo
7:14 pm - 8:45 am
BOI
-
SJO
13h 31m
2 stops
Multiple Airlines Logo
5:45 am - 10:58 pm
SJO
-
BOI
17h 13m
2 stops
$390Multiple Airlines
Thu, Apr 30 - Tue, May 5
Alaska Airlines Logo
9:02 am - 11:45 pm
BOI
-
SJO
14h 43m
2 stops
Alaska Airlines Logo
12:55 am - 12:34 pm
SJO
-
BOI
11h 39m
1 stop
$392Alaska Airlines
Mon, May 11 - Fri, May 22
Multiple Airlines Logo
7:14 pm - 11:15 pm
BOI
-
SJO
28h 01m
2 stops
Multiple Airlines Logo
3:10 pm - 10:20 am
SJO
-
BOI
19h 10m
2 stops
$393Multiple Airlines
Mon, Mar 30 - Tue, Apr 7
American Airlines Logo
6:33 pm - 9:25 am
BOI
-
SJO
14h 52m
2 stops
American Airlines Logo
2:22 pm - 12:51 pm
SJO
-
BOI
22h 29m
2 stops
$394American Airlines
Booking Insights

KAYAK's insights & trends for Boise to San José flights

Get data-powered insights and trends into flights from Boise to San José 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 San José?

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 San José departing in May.

What is the cheapest month to fly from Boise to San José?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to San José, 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 San José is January, where tickets cost $344 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $968 and $775 respectively.

How far in advance should I book a flight from Boise to San José?

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 San José, 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 San José, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$154
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Boise to San José

When to book flights from Boise to San José

Are your dates flexible? Find out the best times to travel from Boise to San José 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 San José

  • What is the cheapest flight from Boise to San José?

    In the last 3 days, the lowest price for a flight from Boise to San José was $154 for a one-way ticket and $373 for a round-trip.

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

    A passport is required to fly from Boise to San José.

  • Which aircraft models fly most regularly from Boise to San José?

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

  • Which airline alliances offer flights from Boise to San José?

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

  • Which is the best airline for flights from Boise to San José, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to San José are Southwest and Alaska Airlines. With an average price for the route of $710 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $686 and an overall rating of 8.0.

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

    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 San José.

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

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

    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 San José with an airline and back to Boise with another airline. Booking your flights between Boise and SJO 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 San José?

    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 San José 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 5 airlines serving from Boise to San José

 
See real verified KAYAK customer reviews for airlines flying from Boise to San José. 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 San José? 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 11904 reviews
7.0Entertainment
7.8Comfort
8.1Boarding
7.1Food
8.5Crew
Airline reviews

Experience overall was great, we didn’t land upside down like a Delta plane once did. The entertainment section didn’t apply for me, but I put excellent I think anyway.

10.0 ExcellentAnonymous, Feb 2026
ATL - SEA
Read more Alaska Airlines reviews

Experience overall was great, we didn’t land upside down like a Delta plane once did. The entertainment section didn’t apply for me, but I put excellent I think anyway.

Representatives both at the gate and on the plane have zero interest in helping you! It’s really unfortunate…

The planes were in very nice condition. Comfortable enough leg room. I had a very quick connection on my return home I made it just fine and so did my luggage!!

Attentive, caring. Loved the communication in the app even before boarding and while on plane from pilots.

We left late; had to land in Minneapolis unscheduled to refuel and then landed in interior instead of lax at 2am......

SBP to PDX 2/17/2026. One person ahead of us at the counter. One ahead of is at TSA. First to board. First row, first class. First to be served. Food and service very good. First off the aircraft. Flight was nice other than some moderately hard bumps on climb out (please find a way to control that!). Air Force landing (none of that Navy slam you to the deck stuff). Wheel chair at the bottom of the ramp waiting for my wife. Luggage out quickly, walked right up to the parking shuttle bus. First stop on the bus. I like the EMB 175 aircraft. This was as close to a perfect flight as I will ever see. Bravo!

I was in economy class and there was plenty of leg room. New interior which was nice and they served various kinds of chips and sodas on the red eye. You couldn't get a bottle of water but they instead served it in a medium paper cup from a reinforced structured paper container, environmental friendly.

Lester and the rest of the crew were such a joy. Also, I want to thank the pilots for getting us there on time, and safely. My first amd only choice will always be Alaska Airlines.

Everything was fine. The snacks are a little on the tiny side.

Not delay for a few passengers. That was uncalled for. If idiots can't make the flight on time thats their fault. Why should I be punished for them? No more holding the plane for one or two people

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.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

Flight attendants very hospitable and friendly. Pilot flew a smooth take off and landing.

Boarding and crew were fantastic, but I paid for a window seat with no window. Seat 11D on a CRJ-900 apparently does not have a window. Lesson learned.

Terrible. Four hour delay because Delta could not find crew to man the aircraft. Terrible communication. Terrible insight into the delays. One of the worst flight experiences I’ve had.

It was good. The leg room was not great in Row 1.

The landing was the worst I’ve experienced with a flight.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

First flight out and was 85 minutes delayed. Notification came out way too late

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Good experience and the flight landed early. There was no food I had or entertainment.

Airport terminal was outdated, flight was on a small jet with no wifi

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

it was a very short flight so my expectations were low.

As great a red-eye flight as red-eye flights can be.

Once boarding started it was pretty quick. Food was inedible; cold and salty..

Entertainment kept turning itself off. Gave up on watching a movie.

Both the WIFI and entertainment did not work for 2.5h

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Waiting for gate in RDU for more than 20mins is crazy.

Flight was on time and there was an empty seat next to me. That makes for a good flight!

Maintenance took a very long time and then we were in a holding pattern. While a one-off maintenance issue is standard, there were delays on both of my flights for this trip based on maintenance issues with the planes, which delayed both flights over 45 minutes. Thankfully, I didn't have any connections but it wasn't an experience that would make me pick AA if I have other options.

I like that the flight attendant was very attentive and helpful. The meal menu could have more of an variety of food choices.

Everything was good. Flight was very full so crew was busy. After we boarded and plane pulled away from the gate, we were delayed about 40 minutes- sitting on the runway - due to weather en route or at the destination. While weather is not the fault of the airline- it’s terrible to sit on a plane and not moving.

We missed our flight and got stranded in Miami where we had to rent a hotel we could not afford. they would not work with us because they said it was weather related even though the gate attendant said it was not. I could go on but trying to get satisfaction has wore me down, which I believe is the intent. My only solution is to never fly AA again.

No Snacks or Entertainment. The flight was short, snacks should still be given.

We lost a day of our vacation because AA did not get the plane to the gate on time. Even though the gate attendant was very clear that it was not weather related, AA would do nothing because there was some snow that day. They basically said the gate attendant was wrong even though she was on the front line of the situation and they were not.

See prior comment about how Kayak mishandled my reservation and delayed my arrival by 6 hours.

American Airlines was great and worked very hard to change my ticket so I could get an earlier, direct flight back to Dallas. However, I was informed that Kayak made mistakes with my itinerary and classified my ticket as desiring to be on the earlier flight instead of taking the necessary step of calling AA to get me on the standby list. This ended up keeping me from being added to the standby list and delayed me getting home by 6 hours. I am happy to discuss this further with Kayak so they can correct their procedures so this won't happen again.

Everything you need to know for your flight from Boise to San José

Information on your arrival and departure airports