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$142+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$323
(Alaska Airlines)

One-way from

$295
(Alaska Airlines)

Popular in

December

Cheapest in

August

Average price

$679
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. 7% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:00 pmBOI - SJO
2 stops19h 56mDelta
Sat 11/11:21 pmSJO - BOI
2 stops21h 56mDelta
Deal found 7/28$320
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 10/810:15 amBOI - SJO
2 stops56h 49mAlaska Airlines
Tue 10/281:11 amSJO - BOI
2 stops15h 06mAlaska Airlines
Deal found 7/29$323
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/261:36 pmBOI - SJO
1 stop28h 39mAmerican Airlines
Wed 9/36:00 amSJO - BOI
2 stops15h 48mAmerican Airlines
Deal found 7/28$328
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Tue 10/145:38 pmBOI - LIR
2 stops23h 50mAlaska Airlines
Tue 10/2110:00 amLIR - BOI
2 stops25h 09mAlaska Airlines
Deal found 7/29$377
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:33 pmBOI - LIR
2 stops22h 12mAmerican Airlines
Wed 10/2212:45 pmLIR - BOI
2 stops24h 01mAmerican Airlines
Deal found 7/29$397
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 9/202:45 pmBOI - SJO
2 stops21h 41mUnited Airlines
Sat 9/278:37 amSJO - BOI
1 stop15h 07mUnited Airlines
Deal found 7/29$430
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/129:16 pmBOI - SJO
3 stops17h 57mMultiple Airlines
Fri 9/1911:37 amSJO - BOI
3 stops25h 44mMultiple Airlines
Deal found 7/29$448
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 10/25:43 pmBOI - LIR
2 stops18h 17mDelta
Mon 10/61:25 pmLIR - BOI
2 stops25h 40mDelta
Deal found 7/29$555
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/22:16 pmBOI - LIR
3 stops25h 04mMultiple Airlines
Mon 10/61:25 pmLIR - BOI
3 stops26h 41mMultiple Airlines
Deal found 7/29$1,210

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 July 30, 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

Mon 10/27

4:00 pm-11:56 am

2 stops19h 56m

San José Juan Santamaria Intl

Sat 11/1

1:21 pm-11:17 am

2 stops21h 56m

$320

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 10/8

10:15 am-7:04 pm

2 stops56h 49m

San José Juan Santamaria Intl

Tue 10/28

1:11 am-4:17 pm

2 stops15h 06m

$323

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Tue 8/26

1:36 pm-6:15 pm

1 stop28h 39m

San José Juan Santamaria Intl

Wed 9/3

6:00 am-9:48 pm

2 stops15h 48m

$328

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Tue 10/14

5:38 pm-5:28 pm

2 stops23h 50m

Liberia

Tue 10/21

10:00 am-11:09 am

2 stops25h 09m

$377

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Wed 10/15

1:33 pm-11:45 am

2 stops22h 12m

Liberia

Wed 10/22

12:45 pm-12:46 pm

2 stops24h 01m

$397

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Sat 9/20

2:45 pm-12:26 pm

2 stops21h 41m

San José Juan Santamaria Intl

Sat 9/27

8:37 am-11:44 pm

1 stop15h 07m

$430

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 9/12

9:16 pm-3:13 pm

3 stops17h 57m

San José Juan Santamaria Intl

Fri 9/19

11:37 am-1:21 pm

3 stops25h 44m

$448

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Thu 10/2

5:43 pm-12:00 pm

2 stops18h 17m

Liberia

Mon 10/6

1:25 pm-3:05 pm

2 stops25h 40m

$555

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Thu 10/2

2:16 pm-3:20 pm

3 stops25h 04m

Liberia

Mon 10/6

1:25 pm-4:06 pm

3 stops26h 41m

$1,210

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 9/5

12:45 pm-12:10 pm

2 stops23h 25m

$142

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 14 results
1
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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 July 30, 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.

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 July 30, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Copa Airlines from Boise to Costa Rica by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Copa Airlines
7.5
Good
1,493 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

  • 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 5 airlines flying from Boise to Costa Rica

Discover the top 5 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$429Average$694FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$436Average$708FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$439Average$620FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$557Average$691FlexibilityNo cancel feeOn-time63%
Copa AirlinesCheapest$591Average$1,197FlexibilityNo cancel feeOn-time70%

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