BOI - SJO

$149 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 4/18. 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
$334
Overall average: $569
American Airlines
Wed 2/25Wed 3/4
BOI - SJO • 1 stop
Cheapest one-way
$149
Typical prices: $140-$215
United Airlines
Sat 4/18
BOI - SJO • 2 stops
Top airlines
American Airlines
Cheapest • from $334 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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
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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

Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
1:39 pm - 10:43 pm
BOI
-
SJO
8h 04m
1 stop
American Airlines Logo
3:59 pm - 12:48 pm
SJO
-
BOI
21h 49m
2 stops
$334American Airlines
Tue, Apr 7 - Tue, Apr 14
Multiple Airlines Logo
7:05 pm - 8:45 am
BOI
-
SJO
13h 40m
2 stops
Multiple Airlines Logo
5:45 am - 11:02 pm
SJO
-
BOI
17h 17m
2 stops
$383Multiple Airlines
Mon, May 18 - Thu, May 28
Alaska Airlines Logo
6:35 am - 11:33 pm
BOI
-
SJO
16h 58m
2 stops
Alaska Airlines Logo
12:53 am - 12:47 pm
SJO
-
BOI
35h 54m
2 stops
$385Alaska Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
8:16 am - 11:15 pm
BOI
-
SJO
13h 59m
2 stops
Multiple Airlines Logo
6:00 am - 11:00 pm
SJO
-
BOI
17h 00m
2 stops
$389Multiple Airlines
Wed, May 13 - Tue, May 19
Multiple Airlines Logo
7:22 pm - 8:45 am
BOI
-
SJO
13h 23m
2 stops
Multiple Airlines Logo
5:45 am - 10:58 pm
SJO
-
BOI
17h 13m
2 stops
$390Multiple Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
8:16 am - 11:15 pm
BOI
-
SJO
13h 59m
1 stop
Multiple Airlines Logo
6:00 am - 11:00 pm
SJO
-
BOI
17h 00m
1 stop
$398Multiple Airlines
Mon, May 11 - Mon, May 18
Alaska Airlines Logo
8:11 am - 11:45 pm
BOI
-
SJO
15h 34m
1 stop
Alaska Airlines Logo
12:53 am - 5:41 pm
SJO
-
BOI
16h 48m
2 stops
$403Alaska Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
8:16 am - 11:15 pm
BOI
-
SJO
13h 59m
2 stops
Multiple Airlines Logo
6:00 am - 11:00 pm
SJO
-
BOI
17h 00m
2 stops
$404Multiple Airlines
Mon, May 18 - Fri, May 29
United Airlines Logo
4:20 pm - 7:15 am
BOI
-
SJO
14h 55m
1 stop
United Airlines Logo
8:45 am - 9:40 pm
SJO
-
BOI
12h 55m
1 stop
$407United Airlines
Mon, May 11 - Fri, May 29
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
$410Multiple 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.

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$149
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 $149 for a one-way ticket and $334 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, Alaska Airlines or Southwest?

    The two airlines most popular with KAYAK users for flights from Boise to San José are Alaska Airlines and Southwest. With an average price for the route of $686 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Southwest is also a great choice for the route, with an average price of $710 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 11882 reviews
8.1Boarding
7.1Food
8.5Crew
7.8Comfort
7.0Entertainment
Airline reviews

Santa Rosa Airport is the best! Glad to have experienced it.

8.0 ExcellentChris, Feb 2026
PSP - PDX
Read more Alaska Airlines reviews

Santa Rosa Airport is the best! Glad to have experienced it.

good, no complaints but nothing to rave about. It was fine

I love Alaska! We arrived on the later side without seat assignments only to find the had oversold the flight by 1. The attendants worked extra hard to find a way for our party of 7 to stay together and we made it on the flight! Loved the free WiFi also!

I paid for the WiFi and it didn’t work during the whole flight

Impressed that Alaska Air(for our domestic flight) transferred our checked bags to EVA (for our international flights) so that we didn't have to handle them, & we just picked them up at our final destination.

The flight was on time and got in early which allowed us to get to our next flight.

The plane not having any overhead bin space was inconvenient. Anytime my luggage has to be checked it ends up covered in scratches and that’s not covered by the airlines for replacement/repair. The WiFi did not work or was not offered for the flight from Seattle to Vancouver.

I enjoyed the movie selection. I’m glad I saw ahead of time to bring personal ear buds. I don’t normally have them with me and airlines used to give them out.

Most of it was good. The flights were on time. The staff were helpful and friendly. I had a short time connecting flights and they let me deplane first and I made the connection. On the outbound from DTW to SEA I was seated in the middle of two very large people. I am petite and even with my arms crossed they were both hanging over into my seat touching me. The meal had way too much pepper and spice, my lips were burning. Other than those two issues, I was pleased with the service and the trip and will use Alaska Air again.

Delay for switching planes. Then delay after delay (mechanical) after boarding so that we were almost 3 hrs late, getting in at 230am. Crew was good.

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.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Excellent!!! Aeromexico is a great airline. What was not that good is the service provided by Kayak. It is never clear and not easy to manage.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

bulkhead seat had very little legroom - even in bsiness class.

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

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Didn't get a seat assignment until the last minute even though i picked a seat.

American has been able to implement an algorithm that makes it possible for nearly every one of my evening flights to be late. Congratulations!

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

The flight was fine, once we got underway. It was more than hour delayed

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Waited for oxygen tanks for 30 minutes after boarding was complete.

The seats are too uncomfortable for anyone over 5ft 8in. I'm 5'10" with a back and hip issue and I was in pai for the full duration of the flight.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

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

Information on your arrival and departure airports