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San José

$144+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 2/1912:38 pm
GEG
-
SJO
1 stop17h 54m
United Airlines
Thu 2/269:40 am
SJO
-
GEG
1 stop13h 27m
United Airlines
Deal found 1/27$319
This Trip.com deal was found by Cheapflights users on 1/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:51 pm
BOI
-
SJO
2 stops28h 24m
Multiple Airlines
Tue 9/15:45 am
SJO
-
BOI
2 stops31h 59m
Multiple Airlines
Deal found 1/28$323
This United Airlines deal was found by Cheapflights users on 1/27. 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 4/134:05 pm
BOI
-
SJO
1 stop15h 10m
United Airlines
Mon 4/278:45 am
SJO
-
BOI
1 stop12h 30m
United Airlines
Deal found 1/27$330
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:28 pm
BOI
-
SJO
2 stops27h 25m
Alaska Airlines
Tue 4/2812:55 am
SJO
-
BOI
2 stops22h 07m
Alaska Airlines
Deal found 1/28$335
This United Airlines deal was found by Cheapflights users on 1/27. 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 5/52:30 pm
JAC
-
SJO
2 stops21h 51m
United Airlines
Mon 5/111:25 pm
SJO
-
JAC
2 stops20h 17m
United Airlines
Deal found 1/27$335
This United Airlines deal was found by Cheapflights users on 1/29. 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.
Tue 4/145:00 am
BOI
-
SJO
2 stops14h 37m
United Airlines
Wed 4/228:45 am
SJO
-
BOI
1 stop11h 08m
United Airlines
Deal found 1/29$345
This Alaska Airlines deal was found by Cheapflights users on 1/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:40 am
BOI
-
SJO
2 stops40h 13m
Alaska Airlines
Tue 4/2812:55 am
SJO
-
BOI
1 stop11h 39m
Alaska Airlines
Deal found 1/28$347
This United Airlines deal was found by Cheapflights users on 1/26. 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 4/134:05 pm
BOI
-
SJO
1 stop15h 10m
United Airlines
Mon 5/48:45 am
SJO
-
BOI
1 stop10h 28m
United Airlines
Deal found 1/26$348
This United Airlines deal was found by Cheapflights users on 1/27. 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 4/174:05 pm
BOI
-
SJO
1 stop15h 10m
United Airlines
Fri 4/248:45 am
SJO
-
BOI
1 stop12h 30m
United Airlines
Deal found 1/27$351
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:55 pm
BOI
-
SJO
1 stop12h 37m
United Airlines
Sat 10/318:40 am
SJO
-
BOI
1 stop12h 35m
United Airlines
Deal found 1/28$353
This Orbitz deal was found by Cheapflights users on 1/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:40 am
BOI
-
SJO
2 stops16h 13m
Alaska Airlines
Wed 4/2912:55 am
SJO
-
BOI
2 stops22h 07m
Alaska Airlines
Deal found 1/28$364
This Trip.com deal was found by Cheapflights users on 1/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:12 pm
BOI
-
SJO
2 stops26h 03m
Multiple Airlines
Tue 3/106:00 am
SJO
-
BOI
2 stops30h 44m
Multiple Airlines
Deal found 1/29$370

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(United Airlines)

One-way from

$144
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$344
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. 6% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 29, 2026.
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

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Thu 2/19

12:38 pm-8:32 am

1 stop17h 54m

San José Juan Santamaria Intl

Thu 2/26

9:40 am-9:07 pm

1 stop13h 27m

$319

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 4/13

4:05 pm-7:15 am

1 stop15h 10m

San José Juan Santamaria Intl

Mon 4/27

8:45 am-9:15 pm

1 stop12h 30m

$330

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 4/21

6:00 am-11:53 pm

2 stops17h 53m

San José Juan Santamaria Intl

Tue 4/28

12:55 am-11:59 pm

2 stops23h 04m

$335

JacksonSan José

JAC - SJO

JACSJO

Jackson Hole

Tue 5/5

2:30 pm-12:21 pm

2 stops21h 51m

San José Juan Santamaria Intl

Mon 5/11

1:25 pm-9:42 am

2 stops20h 17m

$335

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 4/20

7:03 pm-7:15 am

1 stop12h 12m

San José Juan Santamaria Intl

Mon 4/27

8:45 am-7:53 pm

1 stop11h 08m

$345

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 4/13

4:05 pm-7:15 am

1 stop15h 10m

San José Juan Santamaria Intl

Mon 5/4

8:45 am-7:13 pm

1 stop10h 28m

$348

JacksonSan José

JAC - SJO

JACSJO

Jackson Hole

Sat 2/28

3:25 pm-8:32 am

1 stop16h 07m

San José Juan Santamaria Intl

Tue 3/10

5:30 am-8:54 pm

2 stops15h 24m

$376

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 4/17

7:03 pm-10:11 am

2 stops15h 08m

San José Juan Santamaria Intl

Fri 4/24

8:45 am-9:15 pm

1 stop12h 30m

$381

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sun 2/22

7:00 am-8:32 am

1 stop23h 32m

San José Juan Santamaria Intl

Wed 3/4

9:40 am-9:07 pm

1 stop13h 27m

$393

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 2/24

7:11 am-8:39 pm

2 stops12h 28m

San José Juan Santamaria Intl

Wed 3/4

9:40 am-11:38 pm

1 stop14h 58m

$393

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 60 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 $568). 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.

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 United Airlines, Alaska Airlines, and GOL fly from Idaho to San José in about 17h 53m. The time it takes to get you to your destination can typically vary by up to 2h 41m. There are 3008 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 Boise Air Term. Gowen Fld - San José Juan Santamaria Intl, Spokane - 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 $568). 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
Alajuela
Monteverde
Jacó
Heredia
Dominical
Manuel Antonio

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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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Seattle to Liberia flights
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Hobby to Liberia flights
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$141Average$815FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$297Average$544FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$303Average$671FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$376Average$686FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$454Average$710FlexibilityNo cancel feeOn-time63%

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