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Costa Rica

$213+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$350
(Alaska Airlines)

One-way from

$213
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$587
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. 5% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 5/288:59 pmBOI - SJO
2 stops26h 47mAlaska Airlines
Tue 6/31:06 amSJO - BOI
2 stops21h 36mAlaska Airlines
Deal found 4/29$350
This American Airlines deal was found by Cheapflights users on 4/30. 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 9/206:07 amGEG - SJO
1 stop10h 23mAmerican Airlines
Sat 9/277:35 amSJO - GEG
1 stop13h 58mAmerican Airlines
Deal found 4/30$389
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/282:31 pmBOI - SJO
1 stop16h 44mUnited Airlines
Wed 6/48:45 amSJO - BOI
1 stop12h 59mUnited Airlines
Deal found 4/30$406
This United Airlines deal was found by Cheapflights users on 4/30. 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 8/143:28 pmGEG - SJO
1 stop14h 47mUnited Airlines
Thu 8/218:37 amSJO - GEG
1 stop27h 01mUnited Airlines
Deal found 4/30$413
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1311:40 pmBOI - SJO
1 stop13h 25mDelta
Sat 6/217:25 amSJO - BOI
2 stops16h 34mDelta
Deal found 4/29$455
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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.
Sun 5/117:00 amGEG - SJO
1 stop15h 52mAlaska Airlines
Fri 5/161:06 amSJO - GEG
2 stops33h 00mAlaska Airlines
Deal found 4/30$458
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 9/55:18 pmBOI - SJO
2 stops18h 02mAmerican Airlines
Sat 9/137:35 amSJO - BOI
2 stops16h 01mAmerican Airlines
Deal found 4/30$466
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 5/274:35 pmBOI - LIR
2 stops13h 45mAlaska Airlines
Tue 9/911:20 amLIR - BOI
1 stop11h 34mAlaska Airlines
Deal found 4/30$481
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/195:10 pmBOI - LIR
2 stops19h 55mAmerican Airlines
Tue 5/272:05 pmLIR - BOI
2 stops23h 15mAmerican Airlines
Deal found 4/30$501
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/131:37 pmGEG - LIR
2 stops19h 23mUnited Airlines
Fri 6/203:25 pmLIR - GEG
2 stops22h 10mUnited Airlines
Deal found 4/29$501
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 7/317:00 amSUN - SJO
2 stops29h 26mUnited Airlines
Sat 8/96:00 amSJO - SUN
2 stops15h 02mUnited Airlines
Deal found 4/29$506
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/147:00 amJAC - SJO
2 stops36h 37mUnited Airlines
Wed 5/211:30 pmSJO - JAC
2 stops31h 12mUnited Airlines
Deal found 4/30$514

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 May 1, 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

Wed 5/28

8:59 pm-11:46 pm

2 stops26h 47m

San José Juan Santamaria Intl

Tue 6/3

1:06 am-10:42 pm

2 stops21h 36m

$350

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sat 9/20

6:07 am-5:30 pm

1 stop10h 23m

San José Juan Santamaria Intl

Sat 9/27

7:35 am-8:33 pm

1 stop13h 58m

$389

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 5/28

2:31 pm-7:15 am

1 stop16h 44m

San José Juan Santamaria Intl

Wed 6/4

8:45 am-9:44 pm

1 stop12h 59m

$406

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Thu 8/14

3:28 pm-7:15 am

1 stop14h 47m

San José Juan Santamaria Intl

Thu 8/21

8:37 am-10:38 am

1 stop27h 01m

$413

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 6/13

11:40 pm-1:05 pm

1 stop13h 25m

San José Juan Santamaria Intl

Sat 6/21

7:25 am-11:59 pm

2 stops16h 34m

$455

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Sun 5/11

7:00 am-11:52 pm

1 stop15h 52m

San José Juan Santamaria Intl

Fri 5/16

1:06 am-9:06 am

2 stops33h 00m

$458

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Tue 5/27

4:35 pm-6:20 am

2 stops13h 45m

Liberia

Tue 9/9

11:20 am-10:54 pm

1 stop11h 34m

$481

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 5/14

6:52 am-10:17 pm

2 stops15h 25m

San José Juan Santamaria Intl

Tue 8/12

7:25 am-8:09 pm

2 stops12h 44m

$482

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Tue 5/27

5:10 pm-1:26 pm

2 stops20h 16m

Liberia

Tue 9/9

12:55 pm-12:34 pm

2 stops23h 39m

$499

SpokaneLiberia

GEG - LIR

GEGLIR

Spokane

Fri 6/13

1:37 pm-10:00 am

2 stops19h 23m

Liberia

Fri 6/20

3:25 pm-12:35 pm

2 stops22h 10m

$501

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 28 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 May 1, 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 May 1, 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
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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

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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 San José flights
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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$147Average$591FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$416Average$692FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$429Average$700FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$471Average$790FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$559Average$723FlexibilityNo cancel feeOn-time63%

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