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$208+ Cheap flights from Boise (BOI) 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Boise to Costa Rica

Keep the following information in mind while searching for Boise to Costa Rica flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$362
(Alaska Airlines)

One-way from

$208
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$804
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 Boise Air Term. Gowen Fld to Costa Rica
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One-way flight from Boise Air Term. Gowen Fld to Costa Rica
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Highest demand for flights based on searches. 4% potential increase in price ($29 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 March 2025
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Find flight deals from Boise to Costa Rica

Cheapest flights from Boise to Costa Rica
Explore the most affordable flight options available from Boise to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/281:00 pmBOI - SJO
2 stops34h 46mAlaska Airlines
Tue 6/31:06 amSJO - BOI
2 stops19h 44mAlaska Airlines
Deal found 3/27$362
This United Airlines deal was found by Cheapflights users on 3/27. 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 5/297:07 pmBOI - SJO
1 stop12h 08mUnited Airlines
Mon 6/27:55 amSJO - BOI
2 stops25h 51mUnited Airlines
Deal found 3/27$410
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/35:59 pmBOI - SJO
2 stops12h 11mDelta
Sat 5/107:25 amSJO - BOI
2 stops16h 42mDelta
Deal found 3/27$420
This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/41:23 pmBOI - SJO
1 stop8h 41mAmerican Airlines
Wed 5/1411:59 pmSJO - BOI
1 stop22h 01mAmerican Airlines
Deal found 3/26$442
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/195:51 pmBOI - LIR
1 stop12h 29mAlaska Airlines
Tue 5/2711:20 amLIR - BOI
1 stop11h 32mAlaska Airlines
Deal found 3/27$479
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/151:23 pmBOI - LIR
1 stop23h 42mAmerican Airlines
Tue 5/612:45 pmLIR - BOI
2 stops24h 00mAmerican Airlines
Deal found 3/27$494
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 8/67:15 pmBOI - LIR
2 stops16h 55mUnited Airlines
Sun 8/171:20 pmLIR - BOI
2 stops20h 26mUnited Airlines
Deal found 3/27$539
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/63:35 pmBOI - SJO
2 stops28h 34mMultiple Airlines
Fri 6/1311:59 pmSJO - BOI
2 stops15h 05mMultiple Airlines
Deal found 3/27$561
This Copa Airlines deal was found by Cheapflights users on 3/27. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:11 pmBOI - SJO
2 stops27h 45mCopa Airlines
Tue 11/114:13 amSJO - BOI
2 stops19h 52mCopa Airlines
Deal found 3/27$828
This Air Canada deal was found by Cheapflights users on 3/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:07 pmBOI - SJO
2 stops27h 43mAir Canada
Mon 6/307:55 amSJO - BOI
2 stops32h 45mAir Canada
Deal found 3/26$1,044

Cheapflights Fare Finder

Customize your flight search to find flights from Boise 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 March 28, 2025.
Use the filters below to find and compare flights from Boise to Costa Rica that are best for you.

Fly from

Boise

Fly to

Costa Rica

Route

Depart

Return

Price

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 5/28

1:00 pm-11:46 pm

2 stops34h 46m

San José Juan Santamaria Intl

Tue 6/3

1:06 am-8:50 pm

2 stops19h 44m

$362

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Thu 5/29

7:07 pm-7:15 am

1 stop12h 08m

San José Juan Santamaria Intl

Mon 6/2

7:55 am-9:46 am

2 stops25h 51m

$410

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 5/3

5:59 pm-6:10 am

2 stops12h 11m

San José Juan Santamaria Intl

Sat 5/10

7:25 am-12:07 am

2 stops16h 42m

$420

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sun 5/4

1:23 pm-10:04 pm

1 stop8h 41m

San José Juan Santamaria Intl

Wed 5/14

11:59 pm-10:00 pm

1 stop22h 01m

$442

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Mon 5/19

5:51 pm-6:20 am

1 stop12h 29m

Liberia

Tue 5/27

11:20 am-10:52 pm

1 stop11h 32m

$479

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Tue 4/15

1:23 pm-1:05 pm

1 stop23h 42m

Liberia

Tue 5/6

12:45 pm-12:45 pm

2 stops24h 00m

$494

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Wed 8/6

7:15 pm-12:10 pm

2 stops16h 55m

Liberia

Sun 8/17

1:20 pm-9:46 am

2 stops20h 26m

$539

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 6/6

3:35 pm-8:09 pm

2 stops28h 34m

San José Juan Santamaria Intl

Fri 6/13

11:59 pm-3:04 pm

2 stops15h 05m

$561

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 5/30

7:07 pm-10:50 pm

2 stops27h 43m

San José Juan Santamaria Intl

Mon 6/30

7:55 am-4:40 pm

2 stops32h 45m

$1,044

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 4/15

6:37 am-6:24 pm

2 stops11h 47m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 15 results
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Best time to book a flight from Boise to Costa Rica

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

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

Currently, September is the cheapest month in which you can book a flight from Boise to Costa Rica (average of $398). Flying from Boise 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 BOI to CR?

Find hourly flight availability from Boise 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 March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boise 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 March 28, 2025.
Read through reviews of airlines operating flights from Boise to Costa Rica, such as Alaska Airlines, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Air Canada
7.0
Good
8,981 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Boise 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 airport do you fly from for flights from Boise to Costa Rica?

    Most people fly from Boise Air Term. Gowen Fld (BOI) if they book a flight from Boise to Costa Rica. Boise Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $208. Delta flights start at $213 while deals on Alaska Airlines start at $424 one-way.

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

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

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

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

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

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

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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Boise to Costa Rica

Discover the top 6 airlines that operate flights from Boise 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$269Average$359FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$416Average$602FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$429Average$704FlexibilityNo cancel feeOn-time75%
DeltaCheapest$470Average$622FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$480Average$742FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$559Average$723FlexibilityNo cancel feeOn-time63%
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