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Costa Rica

$207+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$380
(American Airlines)

One-way from

$207
(Alaska Airlines)

Popular in

March

Cheapest in

August

Average price

$503
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. 12% potential increase in price ($85 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 9/15:15 pmBOI - SJO
2 stops18h 40mAmerican Airlines
Mon 9/226:00 amSJO - BOI
2 stops15h 48mAmerican Airlines
Deal found 6/11$380
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/25:10 amGEG - LIR
1 stop8h 58mUnited Airlines
Tue 11/1112:50 pmLIR - GEG
1 stop9h 55mUnited Airlines
Deal found 6/10$405
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 10/253:53 pmGEG - LIR
2 stops20h 09mAmerican Airlines
Tue 11/43:00 pmLIR - GEG
2 stops23h 53mAmerican Airlines
Deal found 6/11$409
This United Airlines deal was found by Cheapflights users on 6/11. 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 10/82:44 pmBOI - SJO
1 stop16h 31mUnited Airlines
Wed 10/298:40 amSJO - BOI
1 stop14h 48mUnited Airlines
Deal found 6/11$416
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 10/2212:46 pmIDA - SJO
2 stops22h 24mAmerican Airlines
Wed 11/191:55 pmSJO - IDA
2 stops23h 24mAmerican Airlines
Deal found 6/10$420
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/41:37 pmGEG - SJO
2 stops21h 18mUnited Airlines
Tue 7/225:30 amSJO - GEG
2 stops16h 33mUnited Airlines
Deal found 6/12$420
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 9/2012:35 pmGEG - SJO
2 stops21h 37mAmerican Airlines
Sat 9/277:21 amSJO - GEG
1 stop16h 31mAmerican Airlines
Deal found 6/12$423
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/212:45 pmBOI - LIR
2 stops21h 25mUnited Airlines
Wed 8/271:20 pmLIR - BOI
2 stops20h 22mUnited Airlines
Deal found 6/10$429
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 10/256:50 pmIDA - SJO
2 stops16h 58mDelta
Mon 11/177:00 amSJO - IDA
2 stops16h 20mDelta
Deal found 6/10$430
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 8/211:36 pmBOI - LIR
1 stop23h 23mAmerican Airlines
Wed 8/2712:35 pmLIR - BOI
2 stops23h 44mAmerican Airlines
Deal found 6/10$439
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 8/56:49 pmGEG - LIR
1 stop10h 31mAlaska Airlines
Tue 8/1910:00 amLIR - GEG
1 stop13h 25mAlaska Airlines
Deal found 6/10$447
This United Airlines deal was found by Cheapflights users on 6/10. 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 10/205:56 pmIDA - SJO
2 stops18h 30mUnited Airlines
Mon 11/1712:35 pmSJO - IDA
2 stops22h 13mUnited Airlines
Deal found 6/10$457

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 June 12, 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

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 9/1

5:15 pm-11:55 am

2 stops18h 40m

San José Juan Santamaria Intl

Mon 9/22

6:00 am-9:48 pm

2 stops15h 48m

$380

SpokaneLiberia

GEG - LIR

GEGLIR

Spokane

Sun 11/2

5:10 am-4:08 pm

1 stop8h 58m

Liberia

Tue 11/11

12:50 pm-8:45 pm

1 stop9h 55m

$405

SpokaneLiberia

GEG - LIR

GEGLIR

Spokane

Sat 10/25

3:53 pm-1:02 pm

2 stops20h 09m

Liberia

Tue 11/4

3:00 pm-12:53 pm

2 stops23h 53m

$409

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 10/8

2:44 pm-7:15 am

1 stop16h 31m

San José Juan Santamaria Intl

Wed 10/29

8:40 am-11:28 pm

1 stop14h 48m

$416

Idaho FallsSan José

IDA - SJO

IDASJO

Idaho Falls Fanning Field

Wed 10/22

12:46 pm-11:10 am

2 stops22h 24m

San José Juan Santamaria Intl

Wed 11/19

1:55 pm-12:19 pm

2 stops23h 24m

$420

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Fri 7/4

1:37 pm-11:55 am

2 stops21h 18m

San José Juan Santamaria Intl

Tue 7/22

8:45 am-11:08 pm

1 stop15h 23m

$420

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sat 9/20

12:35 pm-11:12 am

2 stops21h 37m

San José Juan Santamaria Intl

Sat 9/27

7:21 am-10:52 pm

1 stop16h 31m

$423

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Thu 8/21

2:45 pm-12:10 pm

2 stops21h 25m

Liberia

Wed 8/27

1:20 pm-9:42 am

2 stops20h 22m

$429

Idaho FallsSan José

IDA - SJO

IDASJO

Idaho Falls Fanning Field

Sat 10/25

6:50 pm-11:48 am

2 stops16h 58m

San José Juan Santamaria Intl

Mon 11/17

7:00 am-10:20 pm

2 stops16h 20m

$430

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Thu 8/21

1:36 pm-12:59 pm

1 stop23h 23m

Liberia

Wed 8/27

12:35 pm-12:19 pm

2 stops23h 44m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 34 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, September is the cheapest month in which you can book a flight from Idaho to Costa Rica (average of $398). Flying from Idaho to Costa Rica 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 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 June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Costa Rica as you normally would.

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated June 12, 2025.
Read through reviews of airlines operating flights from Idaho to Costa Rica, such as Alaska Airlines, Southwest and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Copa Airlines
7.5
Good
1,451 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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.

  • 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 Alaska Airlines ($207), Delta ($240), and United Airlines ($266).

  • 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, September is the cheapest month in which you can book a flight from Idaho to Costa Rica (average of $398). Flying from Idaho to Costa Rica 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

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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John F Kennedy Intl to Panama City flights
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Top 6 airlines flying from Idaho to Costa Rica

Discover the top 6 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$141Average$625FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$418Average$784FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$429Average$697FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$439Average$688FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$559Average$691FlexibilityNo cancel feeOn-time63%
Copa AirlinesCheapest$591Average$1,197FlexibilityNo cancel feeOn-time70%

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