$133 Cheap Flights from Boise (BOI) to San José (SJO)

View $133 flight on Tue, Feb 24, 2026Opens in a new window

Popular airlines from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO)

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

Prices were available within the past 7 days and start at $133 for one-way flights and $298 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Feb 24 - Tue, Mar 17
BOI
Boise
SJO
San José
$298 Roundtrip, found 5 hours ago
$298
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Feb 24 from Boise to San José, returning Tue, Mar 17, priced at $298 found 5 hours ago
Southwest Airlines
Sun, Oct 19 - Tue, Nov 11
BOI
Boise
SJO
San José
$302 Roundtrip, found 4 days ago
$302
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Sun, Oct 19 from Boise to San José, returning Tue, Nov 11, priced at $302 found 4 days ago
American Airlines
Sat, Jan 24 - Sat, Jan 31
BOI
Boise
SJO
San José
$302 Roundtrip, found 1 hour ago
$302
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, Jan 24 from Boise to San José, returning Sat, Jan 31, priced at $302 found 1 hour ago
United
Fri, Oct 24 - Sat, Nov 1
BOI
Boise
SJO
San José
$304 Roundtrip, found 23 hours ago
$304
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Oct 24 from Boise to San José, returning Sat, Nov 1, priced at $304 found 23 hours ago
United
Fri, Oct 31 - Fri, Nov 7
BOI
Boise
SJO
San José
$305 Roundtrip, found 6 hours ago
$305
Roundtrip
found 6 hours ago
Select United flight, departing Fri, Oct 31 from Boise to San José, returning Fri, Nov 7, priced at $305 found 6 hours ago
United
Fri, Nov 28 - Fri, Dec 12
BOI
Boise
SJO
San José
$307 Roundtrip, found 16 hours ago
$307
Roundtrip
found 16 hours ago
Select United flight, departing Fri, Nov 28 from Boise to San José, returning Fri, Dec 12, priced at $307 found 16 hours ago
American Airlines
Wed, Aug 12 - Sun, Aug 16
BOI
Boise
SJO
San José
$307 Roundtrip, found 3 days ago
$307
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Aug 12 from Boise to San José, returning Sun, Aug 16, priced at $307 found 3 days ago
United
Wed, Oct 29 - Wed, Nov 5
BOI
Boise
SJO
San José
$308 Roundtrip, found 1 day ago
$308
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 29 from Boise to San José, returning Wed, Nov 5, priced at $308 found 1 day ago
Alaska Airlines
Thu, Nov 6 - Wed, Nov 12
BOI
Boise
SJO
San José
$316 Roundtrip, found 1 day ago
$316
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Nov 6 from Boise to San José, returning Wed, Nov 12, priced at $316 found 1 day ago
Delta
Fri, Jan 23 - Sat, Feb 7
BOI
Boise
SJO
San José
$320 Roundtrip, found 6 hours ago
$320
Roundtrip
found 6 hours ago
Select Delta flight, departing Fri, Jan 23 from Boise to San José, returning Sat, Feb 7, priced at $320 found 6 hours ago

Find the cheapest month to fly from Boise (BOI) to San José (SJO)

October is typically the cheapest month to fly

From $297 - $839 per traveler.

Alternative airports near San José

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Juan Santamaria Intl. SJO. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $412
SJO
Juan Santamaria Intl.
Cheapest
Average driving time to city center20 min
Flights from $412

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO) cost?
Get a cheap one-way flight from $133 or cheap return flight from $298 from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO)?
February is the cheapest month to fly from BOI to SJO. Planning your trip for the off-season is often the key to finding better fares.
What is the cheapest airline that flies from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from BOI to SJO. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO)?
There are no daily direct flights departing from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from BOI to SJO?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO)?
To land at Juan Santamaria Intl. Airport (SJO) on time, choose a flight that leaves Boise Airport (BOI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO) last-minute?
Booking your plane ticket from BOI to SJO just before your journey is usually more expensive. However, if there's some wiggle room with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a BOI to SJO flight and hotel package?
Compared with arranging flights and hotels separately, booking a BOI to SJO flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place takes the hassle out of planning your trip. Just secure your flights and choose from our wide range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Juan Santamaria Intl. Airport (SJO)?
If you booked your BOI to SJO flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Boise
Destination airport
Juan Santamaría Intl.
Airlines serving
Aeromexico, Air Canada, Alaska Airlines, American Airlines, Copa, Delta, Southwest Airlines, United
Roundtrip price
$297
Distance
3009 mi

Book with confidence

Boise to San José Flights

The cheapest times to fly from Boise to San José

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boise to San José are during the month of February. You can find some of the cheapest flights from Boise to San José with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to San José

Sunday is one of the best days to book for cheap flights from Boise to San José: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boise to San José

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boise to San José in 2025. You can also book with separate airlines for your outbound and return journeys, from $133 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boise to San José flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boise to San José airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Boise to San José Flights

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*Available to One Key members.