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$142+ Cheap flights from Boise (BOI) to San José (SJO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to San José Juan Santamaria Intl are usually found in August or September, booked 55 days in advance, depart on a Sunday or Wednesday and return on a Tuesday

Cheap flight deals from Boise to San José

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to San José (SJO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$320
(Delta)

One-way from

$142
(Delta)

Popular in

December

Cheapest in

August

Average price

$679
From Boise Air Term. Gowen Fld to San José Juan Santamaria Intl
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One-way flight from Boise Air Term. Gowen Fld to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 7% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Boise to San José

Cheapest flights from Boise to San José
Explore the most affordable flight options available from Boise to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:00 pmBOI - SJO
2 stops19h 56mDelta
Sat 11/11:21 pmSJO - BOI
2 stops21h 56mDelta
Deal found 7/28$320
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/810:15 amBOI - SJO
2 stops56h 49mAlaska Airlines
Tue 10/281:11 amSJO - BOI
2 stops15h 06mAlaska Airlines
Deal found 7/29$323
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/261:36 pmBOI - SJO
1 stop28h 39mAmerican Airlines
Wed 9/36:00 amSJO - BOI
2 stops15h 48mAmerican Airlines
Deal found 7/28$328
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/122:45 pmBOI - SJO
1 stop16h 30mUnited Airlines
Fri 9/198:37 amSJO - BOI
1 stop32h 21mUnited Airlines
Deal found 7/29$432
This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/129:16 pmBOI - SJO
3 stops17h 57mMultiple Airlines
Fri 9/1911:37 amSJO - BOI
3 stops25h 44mMultiple Airlines
Deal found 7/29$448

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to San José that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Boise to San José that are best for you.

Fly from

Boise

Fly to

San José

Route

Depart

Return

Price

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 10/27

4:00 pm-11:56 am

2 stops19h 56m

San José Juan Santamaria Intl

Sat 11/1

1:21 pm-11:17 am

2 stops21h 56m

$320

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 10/8

10:15 am-7:04 pm

2 stops56h 49m

San José Juan Santamaria Intl

Tue 10/28

1:11 am-4:17 pm

2 stops15h 06m

$323

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 8/26

1:36 pm-6:15 pm

1 stop28h 39m

San José Juan Santamaria Intl

Wed 9/3

6:00 am-9:48 pm

2 stops15h 48m

$328

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 9/12

2:45 pm-7:15 am

1 stop16h 30m

San José Juan Santamaria Intl

Fri 9/19

8:37 am-4:58 pm

1 stop32h 21m

$432

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 9/12

9:16 pm-3:13 pm

3 stops17h 57m

San José Juan Santamaria Intl

Fri 9/19

11:37 am-1:21 pm

3 stops25h 44m

$448

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 9/5

12:45 pm-12:10 pm

2 stops23h 25m

$142

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 8/12

7:15 pm-7:15 am

1 stop12h 00m

$210

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 9/5

9:16 pm-10:27 am

3 stops37h 11m

$231

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 8/12

8:25 pm-1:54 pm

3 stops17h 29m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Boise to San José

Have a flexible travel schedule? Discover the best time to fly to San José from Boise with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Boise to San José, San José Province?

Use this chart to determine the optimal time to book a round-trip flight from Boise to San José. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from Boise to San José, San José Province, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boise to San José, San José Province?

Currently, September is the cheapest month in which you can book a flight from Boise to San José, San José Province (average of $398). Flying from Boise to San José, San José Province in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOI to SJO?

Find hourly flight availability from Boise to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s typically best to fly out from Boise to San José, San José Province in the evening. Doing so could potentially save you 20% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Boise to San José, San José Province?

Use this chart to determine the cheapest time to fly round-trip from Boise to San José. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boise to San José, San José Province flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San José. Reviews last updated July 29, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Boise to San José have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,893 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Spirit Airlines
6.3
Okay
8,040 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Boise to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Boise to San José, San José Province round-trip?

    Flying on Delta is currently your cheapest option to San José, San José Province, with prices starting at $320. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and American Airlines, with the lowest prices starting at $323 and $328, respectively. Delta is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boise to San José, San José Province one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $142. However, be on the lookout for offers from United Airlines and Spirit Airlines, as they are both options that can get you from Boise to San José, San José Province for a low price.

  • Can I find deals for flights from Boise to San José that include hotel bookings?

    Yes. In addition to deals on Boise to San José flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to San José?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to San José.

  • Can I find deals for business class flights from Boise to San José?

    Yes. Cheapflights offers flight deals from Boise to San José by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to San José, San José Province?

    Currently, September is the cheapest month in which you can book a flight from Boise to San José, San José Province (average of $398). Flying from Boise to San José, San José Province in March is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Heredia
Manuel Antonio
Alajuela
Monteverde
Jacó

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Top 5 airlines flying from Boise to San José

Discover the top 5 airlines that operate flights from Boise to San José. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$436Average$648FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$439Average$620FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$471Average$686FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$557Average$691FlexibilityNo cancel feeOn-time63%
Copa AirlinesCheapest$591Average$1,197FlexibilityNo cancel feeOn-time70%

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