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$133+ Cheap flights from Idaho to Costa Rica

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from Idaho to Costa Rica

Keep the following information in mind while searching for Idaho to Costa Rica flight deals. Data was last updated November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$302
(United Airlines)

One-way from

$133
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$536
Provider with most accurate pricing for Boise Air Term. Gowen Fld-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-San José Juan Santamaria Intl flights.
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From Idaho to Costa Rica
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One-way flight from Idaho to Costa Rica
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Highest demand for flights based on searches. 4% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Idaho to Costa Rica

Cheapest flights from Idaho to Costa Rica
Explore the most affordable flight options available from Idaho to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This United Airlines deal was found by Cheapflights users on 11/2. 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 11/112:40 pmBOI - SJO
1 stop16h 52mUnited Airlines
Mon 11/179:40 amSJO - BOI
1 stop10h 14mUnited Airlines
Deal found 11/2$298
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 11/152:45 pmIDA - SJO
2 stops14h 40mUnited Airlines
Tue 11/1812:35 pmSJO - IDA
2 stops22h 13mUnited Airlines
Deal found 11/1$302
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 11/810:39 amBOI - SJO
1 stop10h 21mUnited Airlines
Sat 12/68:45 amSJO - BOI
2 stops15h 59mUnited Airlines
Deal found 11/1$302
This Alaska Airlines deal was found by Cheapflights users on 11/3. 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.
Tue 11/116:05 pmBOI - SJO
2 stops29h 33mAlaska Airlines
Mon 11/171:55 amSJO - BOI
1 stop12h 45mAlaska Airlines
Deal found 11/3$320
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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.
Tue 11/118:08 amBOI - SJO
1 stop15h 30mAlaska Airlines
Tue 11/181:55 amSJO - BOI
1 stop22h 07mAlaska Airlines
Deal found 11/1$322
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 11/118:08 amBOI - SJO
1 stop15h 30mAlaska Airlines
Sun 11/161:55 amSJO - BOI
2 stops45h 13mAlaska Airlines
Deal found 10/31$332
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/62:40 pmJAC - SJO
2 stops19h 45mUnited Airlines
Thu 11/132:20 pmSJO - JAC
2 stops20h 25mUnited Airlines
Deal found 11/1$332
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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 11/126:05 pmBOI - SJO
2 stops29h 33mAlaska Airlines
Tue 11/181:55 amSJO - BOI
2 stops21h 25mAlaska Airlines
Deal found 10/31$333
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 12/612:33 pmGEG - SJO
1 stop17h 59mUnited Airlines
Tue 12/169:40 amSJO - GEG
1 stop11h 04mUnited Airlines
Deal found 11/1$408
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/117:00 pmBOI - SJO
1 stop12h 32mUnited Airlines
Tue 11/189:40 amSJO - BOI
1 stop14h 48mUnited Airlines
Deal found 11/3$408
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/115:17 pmBOI - SJO
2 stops17h 08mUnited Airlines
Wed 11/199:40 amSJO - BOI
1 stop14h 48mUnited Airlines
Deal found 11/3$412
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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 11/512:33 pmGEG - SJO
2 stops34h 05mAlaska Airlines
Mon 12/151:30 amSJO - GEG
2 stops33h 07mAlaska Airlines
Deal found 11/1$415

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Costa Rica 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 November 3, 2025.
Use the filters below to find and compare flights from Idaho to Costa Rica that are best for you.

Fly from

Idaho

Fly to

Costa Rica

Route

Depart

Return

Price

Idaho FallsSan José

IDA - SJO

IDASJO

Idaho Falls Fanning Field

Sat 11/15

2:45 pm-6:25 am

2 stops14h 40m

San José Juan Santamaria Intl

Tue 11/18

12:35 pm-9:48 am

2 stops22h 13m

$302

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 1/19

5:54 pm-12:38 pm

2 stops17h 44m

San José Juan Santamaria Intl

Fri 1/30

6:38 am-7:25 pm

1 stop13h 47m

$302

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sat 1/24

6:00 am-11:43 pm

1 stop15h 43m

San José Juan Santamaria Intl

Wed 1/28

2:54 pm-6:49 pm

1 stop29h 55m

$306

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 1/31

7:05 pm-8:32 am

1 stop12h 27m

San José Juan Santamaria Intl

Sat 2/7

7:30 am-7:51 pm

2 stops13h 21m

$319

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Fri 1/23

1:20 pm-6:59 am

2 stops15h 39m

San José Juan Santamaria Intl

Wed 1/28

2:31 pm-1:05 pm

2 stops24h 34m

$320

JacksonSan José

JAC - SJO

JACSJO

Jackson Hole

Thu 11/6

2:40 pm-11:25 am

2 stops19h 45m

San José Juan Santamaria Intl

Thu 11/13

2:20 pm-9:45 am

2 stops20h 25m

$332

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sat 1/24

6:30 am-10:15 pm

2 stops13h 45m

San José Juan Santamaria Intl

Wed 1/28

2:31 pm-1:05 pm

2 stops24h 34m

$341

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 3/9

1:44 pm-11:00 am

2 stops21h 16m

San José Juan Santamaria Intl

Wed 3/11

12:55 pm-12:40 pm

2 stops23h 45m

$362

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Fri 1/23

7:30 am-11:59 pm

2 stops14h 29m

San José Juan Santamaria Intl

Tue 1/27

1:16 am-9:25 pm

2 stops22h 09m

$400

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 1/19

5:55 pm-12:01 am

2 stops29h 06m

San José Juan Santamaria Intl

Thu 1/29

1:16 am-1:35 pm

1 stop13h 19m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 58 results
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Best time to book a flight from Idaho to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica 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 Costa Rica

What is the cheapest month to book a flight from Idaho to Costa Rica?

Currently, October is the cheapest month in which you can book a flight from Idaho to Costa Rica (average of $165). Flying from Idaho to Costa Rica 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.

What is the cheapest time of day to fly from ID to CR?

Find hourly flight availability from Idaho to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

It’s typically best to fly out from Idaho to Costa Rica at noon. Doing so could potentially save you 10% 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 Costa Rica?

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

Travelers seeking maximum savings on their Idaho to Costa Rica 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.

Related info for your journey

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

  • How long is the flight from Idaho to Costa Rica?

    Departing from Idaho to Costa Rica will take you 13h 45m. There are 3240 mi between Idaho and Costa Rica. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Idaho to Costa Rica one-way?

    The cheapest airlines for a one-way flight from Idaho to Costa Rica are United Airlines ($133), American Airlines ($133), and Delta ($142).

  • Can I find deals for flights from Idaho to Costa Rica that include hotel bookings?

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

  • How can I find direct flights from Idaho to Costa Rica?

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

  • Can I find deals for business class flights from Idaho to Costa Rica?

    Yes. Cheapflights offers flight deals from Idaho to Costa Rica 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 Costa Rica?

    Currently, October is the cheapest month in which you can book a flight from Idaho to Costa Rica (average of $165). Flying from Idaho to Costa Rica 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Idaho to Costa Rica

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 Costa Rica

Discover the top 5 airlines that operate flights from Idaho to Costa Rica. 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$141Average$815FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$317Average$719FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$323Average$770FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$376Average$674FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$477Average$710FlexibilityNo cancel feeOn-time63%

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