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San José

$133+ Cheap flights from Idaho 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Idaho to San José

Cheapest flights from Idaho to San José
Explore the most affordable flight options available from Idaho to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/13. 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.
Tue 12/167:11 pmBOI - SJO
1 stop12h 21mUnited Airlines
Thu 12/188:45 amSJO - BOI
2 stops14h 45mUnited Airlines
Deal found 12/13$390
This Delta deal was found by Cheapflights users on 12/14. 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 12/155:58 pmBOI - SJO
2 stops18h 08mDelta
Mon 12/227:00 amSJO - BOI
2 stops17h 53mDelta
Deal found 12/14$420
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/152:20 pmBOI - SJO
1 stop17h 12mUnited Airlines
Mon 12/226:30 amSJO - BOI
2 stops16h 01mUnited Airlines
Deal found 12/14$449
This Southwest deal was found by Cheapflights users on 12/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:50 pmBOI - SJO
2 stops18h 25mSouthwest
Thu 12/182:10 pmSJO - BOI
2 stops11h 35mSouthwest
Deal found 12/13$482
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/264:20 pmJAC - SJO
2 stops27h 19mUnited Airlines
Mon 12/298:45 amSJO - JAC
2 stops29h 33mUnited Airlines
Deal found 12/13$505
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Wed 12/241:00 pmJAC - SJO
1 stop8h 32mUnited Airlines
Sun 12/286:30 amSJO - JAC
2 stops15h 22mUnited Airlines
Deal found 12/13$697
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Sun 12/215:12 pmBOI - SJO
2 stops24h 04mUnited Airlines
Tue 12/306:40 amSJO - BOI
1 stop16h 50mUnited Airlines
Deal found 12/14$829
This American Airlines deal was found by Cheapflights users on 12/13. 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.
Sun 12/217:00 amBOI - SJO
1 stop14h 45mAmerican Airlines
Tue 12/307:00 amSJO - BOI
1 stop16h 59mAmerican Airlines
Deal found 12/13$836
This Expedia deal was found by Cheapflights users on 12/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:58 amBOI - SJO
2 stops14h 42mMultiple Airlines
Thu 12/183:05 pmSJO - BOI
3 stops32h 57mMultiple Airlines
Deal found 12/13$861
This deal was found by Cheapflights users on 12/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:55 pmBOI - SJO
1 stop12h 37mUnited Airlines
Thu 1/17:30 amSJO - BOI
1 stop11h 33mUnited Airlines
Deal found 12/14$882
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Wed 12/172:20 pmSUN - SJO
2 stops31h 12mUnited Airlines
Sat 1/36:30 amSJO - SUN
2 stops16h 00mUnited Airlines
Deal found 12/13$1,115

Find flight deals from Idaho to San José

Keep the following information in mind while searching for Idaho to San José flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$302
(American Airlines)

One-way from

$133
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$968
Provider with most accurate pricing for Boise Air Term. Gowen Fld-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-San José Juan Santamaria Intl flights.
Search Deals
From Idaho to San José Juan Santamaria Intl
Search Deals
One-way flight from Idaho to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 December 15, 2025.
Use the filters below to find and compare flights from Idaho to San José that are best for you.

Fly from

Idaho

Fly to

San José

Route

Depart

Return

Price

HaileySan José

SUN - SJO

SUNSJO

Hailey Sun Valley-Friedman

Wed 1/21

1:16 pm-9:02 pm

2 stops30h 46m

San José Juan Santamaria Intl

Wed 1/28

8:00 am-12:46 pm

2 stops29h 46m

$302

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Tue 1/27

4:10 pm-1:15 pm

2 stops19h 05m

San José Juan Santamaria Intl

Tue 2/3

9:40 am-7:16 pm

1 stop11h 36m

$313

HaileySan José

SUN - SJO

SUNSJO

Hailey Sun Valley-Friedman

Wed 1/21

4:03 pm-8:32 am

1 stop15h 29m

San José Juan Santamaria Intl

Wed 1/28

6:30 am-9:29 pm

2 stops15h 59m

$326

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sun 1/11

12:24 pm-8:32 am

1 stop18h 08m

San José Juan Santamaria Intl

Sun 1/18

6:30 am-9:22 pm

2 stops16h 52m

$354

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/2

6:55 pm-8:32 am

1 stop12h 37m

San José Juan Santamaria Intl

Sun 3/8

9:40 am-11:57 pm

1 stop14h 17m

$381

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sun 4/19

7:30 am-11:35 pm

3 stops16h 05m

San José Juan Santamaria Intl

Sat 4/25

8:00 pm-11:07 pm

3 stops27h 07m

$385

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Tue 1/27

2:10 pm-12:50 pm

2 stops20h 40m

San José Juan Santamaria Intl

Tue 2/3

9:40 am-8:15 pm

2 stops12h 35m

$392

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 2/9

7:05 pm-8:32 am

1 stop12h 27m

San José Juan Santamaria Intl

Sun 2/15

7:30 am-11:48 pm

1 stop17h 18m

$400

JacksonSan José

JAC - SJO

JACSJO

Jackson Hole

Fri 1/23

7:00 am-10:00 pm

1 stop14h 00m

San José Juan Santamaria Intl

Sat 1/31

8:45 am-8:42 pm

2 stops12h 57m

$401

JacksonSan José

JAC - SJO

JACSJO

Jackson Hole

Fri 2/6

2:10 pm-11:43 pm

1 stop8h 33m

San José Juan Santamaria Intl

Fri 2/13

3:04 pm-11:46 am

2 stops21h 42m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 43 results
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Best time to book a flight from Idaho to San José

Have a flexible travel schedule? Discover the best time to fly to San José from Idaho 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 Idaho to San José

What is the cheapest month to book a flight from Idaho to San José?

Currently, October is the cheapest month in which you can book a flight from Idaho to San José (average of $162). Flying from Idaho to San José in December is currently the most expensive (average of $575). 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 ID to SJO?

Find hourly flight availability from Idaho 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 December 15, 2025.

It’s typically best to fly out from Idaho to San José at noon. Doing so could potentially save you 33% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Idaho to San José?

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

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

How much does it cost to fly round-trip from Idaho to San José?

Related info for your journey

Find useful and relevant information for your journey from Idaho 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 airport do you fly into for flights to San José from Idaho?

    If you book a flight to San José from Idaho, you will be flying to Juan Santamaria Intl, which is the city’s only airport. San José Juan Santamaria Intl (SJO) is located 8.8 mi from the center of San José.

  • How long is the flight from Idaho to San José?

    Airlines like American Airlines, United Airlines, and Southwest fly from Idaho to San José in about 19h 05m. The time it takes to get you to your destination can typically vary by up to 11h 41m. There are 3240 mi between Idaho and San José. This flight may include one or multiple stops.

  • What are the most popular routes from Idaho to San José?

    Most travelers choose Spokane - San José Juan Santamaria Intl, Boise Air Term. Gowen Fld - San José Juan Santamaria Intl or Jackson Hole - San José Juan Santamaria Intl when deciding on the best route from Idaho to San José.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 Idaho to San José?

    Currently, October is the cheapest month in which you can book a flight from Idaho to San José (average of $162). Flying from Idaho to San José in December is currently the most expensive (average of $575). 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
Manuel Antonio
Alajuela
Monteverde
Jacó
Heredia
Dominical

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Alternative routes for Idaho to San José

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Idaho to San José

Discover the top 5 airlines that operate flights from Idaho 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$141Average$815FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$303Average$682FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$309Average$560FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$376Average$682FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$454Average$752FlexibilityNo cancel feeOn-time63%

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