SJO - BOI

Find cheap flights from San José to Boise

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Boise

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

Cheapest round-trip
Multiple Airlines
Thu 11/13
SJO - BOI • multi-stop
Cheapest one-way
Multiple Airlines
Thu 11/13
SJO - BOI • multi-stop
When to travel
July
Cheapest • 35% price drop
November
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 Boise!
Flight Deals
Booking Insights
Flight Deals

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

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

Multiple Airlines Logo
SJO-BOI
3008 mimulti-stop
Multiple Airlines Logo
BOI-SJO
3008 mimulti-stop
Multiple Airlines
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Booking Insights

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

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

What’s the cheapest day of the week to fly from San José to Boise?

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

When flying from San José to Boise, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to San José, you’ll find the best rates on Sundays and the most expensive ones on Fridays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San José 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 from San José to Boise is July, where tickets cost $307 (return) on average. On the other hand, the most expensive months are November and February, where the average cost of round-trip tickets is $711 and $633 respectively.

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Good to know

Low seasonFebruary
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly with an average 50% increase in price.

When to book flights from San José to Boise

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

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

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

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

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

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

    Star Alliance is the only airline alliance operating flights between San José and Boise.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from San José 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 San José 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 to San José with another airline. Booking your flights between San José and BOI 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 San José 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 from San José up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from San José to Boise

 
See real verified KAYAK customer reviews for airlines flying from San José to Boise. 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 San José 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.
7.4
United AirlinesOverall score based on 9015 reviews
8.1Crew
7.3Comfort
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

Great crew, excellent landing, good food. Over all great experience. Thank you!

8.0 ExcellentSemra, Nov 2025GVA - IAD
Read more United Airlines reviews

Great crew, excellent landing, good food. Over all great experience. Thank you!

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

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

Information on your arrival and departure airports

San José (SJO)
Boise (BOI)