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$207+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
May 19 — May 261
Mon 5/19
Mon 5/26
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 May 14, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$408
(United Airlines)

One-way from

$207
(Priceline)

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 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. 6% potential increase in price ($46 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 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 May 14, 2025.

This United Airlines deal was found by Cheapflights users on 5/13. 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 6/87:07 pmBOI - SJO
2 stops15h 04mUnited Airlines
Sun 6/156:00 amSJO - BOI
1 stop9h 59mUnited Airlines
Deal found 5/13$408
This Delta deal was found by Cheapflights users on 5/13. 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 6/3011:40 pmBOI - SJO
1 stop12h 20mDelta
Sat 7/127:25 amSJO - BOI
2 stops16h 34mDelta
Deal found 5/13$418
This American Airlines deal was found by Cheapflights users on 5/13. 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 10/81:41 pmBOI - SJO
2 stops19h 44mAmerican Airlines
Wed 10/292:45 pmSJO - BOI
2 stops21h 59mAmerican Airlines
Deal found 5/13$426
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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 5/288:05 amBOI - SJO
1 stop15h 41mAlaska Airlines
Tue 6/31:06 amSJO - BOI
2 stops19h 44mAlaska Airlines
Deal found 5/13$437
This American Airlines deal was found by Cheapflights users on 5/14. 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 5/275:10 pmBOI - LIR
2 stops20h 16mAmerican Airlines
Tue 9/912:55 pmLIR - BOI
2 stops23h 49mAmerican Airlines
Deal found 5/14$483
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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 5/275:51 pmBOI - LIR
1 stop12h 29mAlaska Airlines
Tue 9/911:20 amLIR - BOI
1 stop11h 34mAlaska Airlines
Deal found 5/14$531
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/155:35 amBOI - SJO
2 stops14h 05mSouthwest
Tue 5/208:45 amSJO - BOI
2 stops14h 45mSouthwest
Deal found 5/13$555
This United Airlines deal was found by Cheapflights users on 5/13. 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 5/195:00 amBOI - LIR
1 stop10h 25mUnited Airlines
Tue 5/2711:49 amLIR - BOI
1 stop11h 08mUnited Airlines
Deal found 5/13$599
This Copa Airlines deal was found by Cheapflights users on 5/13. 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 stops16h 50mCopa Airlines
Tue 11/114:13 amSJO - BOI
2 stops19h 09mCopa Airlines
Deal found 5/13$606
This Mytrip deal was found by Cheapflights users on 5/13. 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 6/209:43 amBOI - SJO
3 stops24h 53mSpirit Airlines
Sun 6/2211:31 amSJO - BOI
2 stops21h 17mSpirit Airlines
Deal found 5/13$611
This Expedia deal was found by Cheapflights users on 5/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/155:51 pmBOI - SJO
2 stops29h 24mMultiple Airlines
Mon 5/191:06 amSJO - BOI
2 stops21h 36mMultiple Airlines
Deal found 5/13$749
This Air Canada deal was found by Cheapflights users on 5/13. 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 7/410:45 amBOI - SJO
2 stops36h 05mAir Canada
Thu 7/107:55 amSJO - BOI
2 stops38h 32mAir Canada
Deal found 5/13$1,029

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 May 14, 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

Sun 6/8

7:07 pm-10:11 am

2 stops15h 04m

San José Juan Santamaria Intl

Sun 6/15

6:00 am-3:59 pm

1 stop9h 59m

$408

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Mon 6/30

11:40 pm-12:00 pm

1 stop12h 20m

San José Juan Santamaria Intl

Sat 7/12

7:25 am-11:59 pm

2 stops16h 34m

$418

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 10/8

1:41 pm-9:25 am

2 stops19h 44m

San José Juan Santamaria Intl

Wed 10/29

2:45 pm-12:44 pm

2 stops21h 59m

$426

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-8:50 pm

2 stops19h 44m

$437

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-12:44 pm

2 stops23h 49m

$483

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Tue 5/27

5:51 pm-6:20 am

1 stop12h 29m

Liberia

Tue 9/9

11:20 am-10:54 pm

1 stop11h 34m

$531

BoiseLiberia

BOI - LIR

BOILIR

Boise Air Term. Gowen Fld

Tue 7/29

5:00 am-3:25 pm

1 stop10h 25m

Liberia

Tue 8/5

11:49 am-10:27 pm

1 stop10h 38m

$604

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Wed 11/5

2:11 pm-8:01 am

2 stops16h 50m

San José Juan Santamaria Intl

Tue 11/11

4:13 am-10:22 pm

2 stops19h 09m

$606

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 6/20

9:43 am-10:36 am

3 stops24h 53m

San José Juan Santamaria Intl

Sun 6/22

11:31 am-8:48 am

2 stops21h 17m

$611

BoiseSan José

BOI - SJO

BOISJO

Boise Air Term. Gowen Fld

Fri 6/20

9:43 am-10:36 am

3 stops24h 53m

San José Juan Santamaria Intl

Sun 6/22

5:30 am-8:48 am

3 stops27h 18m

$675

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 18 results
1
2

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 May 14, 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 May 14, 2025.
Read through reviews of airlines operating flights from Boise to Costa Rica, such as Alaska Airlines, Delta and Copa Airlines. 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

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

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
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Copa Airlines
7.6
Good
1,423 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

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
8,730 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

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
10,000 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

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 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $207. Delta flights start at $215 while deals on United Airlines start at $219 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

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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 May 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$141Average$625FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$416Average$590FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$418Average$734FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$429Average$696FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$559Average$691FlexibilityNo cancel feeOn-time63%

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