$219+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Mar 13 — Mar 201
1 adult, Economy
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Find cheap flights from Boise to Costa Rica with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Boise to Costa RicaExplore 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 February 11, 2026.
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 February 11, 2026.
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/96:55 pm
BOI
- SJO
1 stop12h 37m
United Airlines
Mon 3/168:40 am
SJO
- BOI
1 stop10h 32m
United Airlines
Deal found 2/8![United Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 2/9. 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 2/251:39 pm
BOI
- SJO
1 stop8h 04m
American Airlines
Wed 3/43:59 pm
SJO
- BOI
2 stops21h 49m
American Airlines
Deal found 2/9![American Airlines logo]()
$353
This American Airlines deal was found by Cheapflights users on 2/9. 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 3/306:33 pm
BOI
- SJO
2 stops14h 52m
American Airlines
Tue 4/72:22 pm
SJO
- BOI
2 stops22h 29m
American Airlines
Deal found 2/9![American Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 3/35:00 am
BOI
- SJO
2 stops14h 39m
United Airlines
Tue 3/108:40 am
SJO
- BOI
1 stop12h 33m
United Airlines
Deal found 2/9![United Airlines logo]()
$371
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Sat 5/97:14 pm
BOI
- SJO
1 stop28h 31m
Alaska Airlines
Sun 5/1712:53 am
SJO
- BOI
2 stops40h 48m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$383
This Avianca deal was found by Cheapflights users on 2/9. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:16 am
BOI
- SJO
2 stops13h 59m
Multiple Airlines
Tue 3/106:00 am
SJO
- BOI
2 stops17h 00m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$387
This Avianca deal was found by Cheapflights users on 2/10. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:22 pm
BOI
- SJO
2 stops13h 23m
Multiple Airlines
Tue 5/195:45 am
SJO
- BOI
2 stops17h 13m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$390
This Trip.com deal was found by Cheapflights users on 2/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:16 am
BOI
- SJO
2 stops14h 59m
Multiple Airlines
Tue 3/176:00 am
SJO
- BOI
2 stops30h 25m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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.
Mon 5/118:11 am
BOI
- SJO
1 stop15h 34m
Alaska Airlines
Mon 5/1812:53 am
SJO
- BOI
2 stops16h 48m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$403
This Expedia deal was found by Cheapflights users on 2/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:18 am
BOI
- SJO
2 stops14h 57m
Multiple Airlines
Mon 9/2112:40 pm
SJO
- BOI
3 stops25h 04m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$404
This Expedia deal was found by Cheapflights users on 2/8. 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.
Sun 11/158:18 am
BOI
- SJO
1 stop14h 39m
Alaska Airlines
Sat 11/211:45 am
SJO
- BOI
2 stops35h 36m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$406
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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 3/98:12 pm
BOI
- LIR
1 stop10h 24m
Alaska Airlines
Wed 3/1111:45 am
LIR
- BOI
1 stop11h 15m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$422
Best flights from Boise to Costa RicaDiscover carefully curated flight deals from Boise to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 11, 2026.
Discover carefully curated flight deals from Boise to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 11, 2026.
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/96:55 pm
BOI
- SJO
1 stop12h 37m
United Airlines
Mon 3/168:40 am
SJO
- BOI
1 stop10h 32m
United Airlines
Deal found 2/8![United Airlines logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Sat 5/97:14 pm
BOI
- SJO
1 stop28h 31m
Alaska Airlines
Sun 5/1712:53 am
SJO
- BOI
2 stops40h 48m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$383
This Avianca deal was found by Cheapflights users on 2/9. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:16 am
BOI
- SJO
2 stops13h 59m
Multiple Airlines
Thu 3/126:00 am
SJO
- BOI
2 stops17h 00m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$429
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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 5/126:08 pm
BOI
- SJO
2 stops29h 25m
Alaska Airlines
Mon 5/1812:53 am
SJO
- BOI
2 stops16h 48m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 2/8. 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 5/912:30 pm
BOI
- SJO
2 stops17h 00m
United Airlines
Sun 5/178:45 am
SJO
- BOI
1 stop10h 26m
United Airlines
Deal found 2/8![United Airlines logo]()
$420
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Fri 5/87:14 pm
BOI
- SJO
1 stop28h 31m
Alaska Airlines
Sun 5/1712:53 am
SJO
- BOI
2 stops40h 48m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 2/9. 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 2/256:55 pm
BOI
- SJO
1 stop12h 37m
United Airlines
Mon 3/29:40 am
SJO
- BOI
1 stop14h 58m
United Airlines
Deal found 2/9![United Airlines logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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.
Mon 5/118:11 am
BOI
- SJO
1 stop15h 34m
Alaska Airlines
Tue 5/1912:53 am
SJO
- BOI
2 stops58h 09m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 2/7. 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 3/98:12 pm
BOI
- LIR
1 stop10h 24m
Alaska Airlines
Wed 3/1111:45 am
LIR
- BOI
1 stop11h 15m
Alaska Airlines
Deal found 2/7![Alaska Airlines logo]()
$422
This Travelocity deal was found by Cheapflights users on 2/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:05 pm
BOI
- LIR
1 stop11h 15m
Alaska Airlines
Fri 4/177:40 am
LIR
- BOI
1 stop15h 22m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$431
This Alaska Airlines deal was found by Cheapflights users on 2/7. 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 4/286:00 am
BOI
- LIR
2 stops24h 20m
Alaska Airlines
Mon 5/411:20 am
LIR
- BOI
1 stop11h 41m
Alaska Airlines
Deal found 2/7![Alaska Airlines logo]()
$481
Last-minute flights from Boise to Costa RicaDiscover last-minute flight deals from Boise to Costa Rica. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Costa Rica. Data last updated February 11, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/9. 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 2/251:39 pm
BOI
- SJO
1 stop8h 04m
American Airlines
Wed 3/43:59 pm
SJO
- BOI
2 stops21h 49m
American Airlines
Deal found 2/9![American Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 2/9. 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 2/256:55 pm
BOI
- SJO
1 stop12h 37m
United Airlines
Mon 3/29:40 am
SJO
- BOI
1 stop14h 58m
United Airlines
Deal found 2/9![United Airlines logo]()
$421
This KAYAK deal was found by Cheapflights users on 2/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:00 am
BOI
- SJO
2 stops30h 15m
GOL
Wed 3/42:50 pm
SJO
- BOI
2 stops22h 58m
GOL
Deal found 2/7![GOL logo]()
$426
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 3/35:00 am
BOI
- SJO
2 stops14h 39m
United Airlines
Tue 3/108:40 am
SJO
- BOI
1 stop12h 33m
United Airlines
Deal found 2/9![United Airlines logo]()
$371
This Avianca deal was found by Cheapflights users on 2/9. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:16 am
BOI
- SJO
2 stops13h 59m
Multiple Airlines
Tue 3/106:00 am
SJO
- BOI
2 stops17h 00m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$387
This eDestinos deal was found by Cheapflights users on 2/9. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:16 am
BOI
- SJO
1 stop13h 59m
Multiple Airlines
Thu 3/126:00 am
SJO
- BOI
1 stop30h 44m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/96:55 pm
BOI
- SJO
1 stop12h 37m
United Airlines
Mon 3/168:40 am
SJO
- BOI
1 stop10h 32m
United Airlines
Deal found 2/8![United Airlines logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 2/7. 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 3/98:12 pm
BOI
- LIR
1 stop10h 24m
Alaska Airlines
Wed 3/1111:45 am
LIR
- BOI
1 stop11h 15m
Alaska Airlines
Deal found 2/7![Alaska Airlines logo]()
$422
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 3/98:12 pm
BOI
- LIR
1 stop10h 24m
Alaska Airlines
Wed 3/256:12 pm
LIR
- BOI
2 stops28h 45m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$481
This American Airlines deal was found by Cheapflights users on 2/9. 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 3/91:39 pm
BOI
- LIR
1 stop23h 48m
American Airlines
Wed 3/2512:37 pm
LIR
- BOI
1 stop9h 46m
American Airlines
Deal found 2/9![American Airlines logo]()
$521
This Trip.com deal was found by Cheapflights users on 2/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:16 am
BOI
- SJO
2 stops14h 59m
Multiple Airlines
Tue 3/176:00 am
SJO
- BOI
2 stops30h 25m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$394
This American Airlines deal was found by Cheapflights users on 2/9. 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 3/306:33 pm
BOI
- SJO
2 stops14h 52m
American Airlines
Tue 4/72:22 pm
SJO
- BOI
2 stops22h 29m
American Airlines
Deal found 2/9![American Airlines logo]()
$364
One-way flights from Boise to Costa RicaSearch for one-way flight options from Boise to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
Search for one-way flight options from Boise to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This Avianca deal was found by Cheapflights users on 2/8. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/158:22 pm
BOI
- SJO
2 stops12h 18m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$219
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/156:55 pm
BOI
- SJO
1 stop12h 37m
United Airlines
Deal found 2/8![United Airlines logo]()
$374
This business-class.com deal was found by Cheapflights users on 2/10. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:07 am
BOI
- SJO
2 stops15h 08m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$758
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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.
Thu 4/168:07 am
BOI
- SJO
1 stop15h 46m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$773
Find 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 February 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $351 (United Airlines) |
One-way from | $219 (Avianca) |
Popular in | December |
Cheapest in | January |
Average price | $588 |
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 February 11, 2026.
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 3/9
6:55 pm-7:32 am
1 stop12h 37m
San José Juan Santamaria Intl
Mon 3/16
8:40 am-7:12 pm
1 stop10h 32m
$351
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sat 5/9
7:14 pm-11:45 pm
1 stop28h 31m
San José Juan Santamaria Intl
Sun 5/17
12:53 am-5:41 pm
2 stops40h 48m
$383
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Tue 5/12
6:08 pm-11:33 pm
2 stops29h 25m
San José Juan Santamaria Intl
Mon 5/18
12:53 am-5:41 pm
2 stops16h 48m
$403
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Fri 5/8
7:14 pm-11:45 pm
1 stop28h 31m
San José Juan Santamaria Intl
Sun 5/17
12:53 am-5:41 pm
2 stops40h 48m
$413
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Mon 5/11
8:11 am-11:45 pm
1 stop15h 34m
San José Juan Santamaria Intl
Tue 5/19
12:53 am-11:02 am
2 stops58h 09m
$417
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sat 5/9
12:30 pm-5:30 am
2 stops17h 00m
San José Juan Santamaria Intl
Sun 5/17
8:45 am-7:11 pm
1 stop10h 26m
$420
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Wed 2/25
6:55 pm-8:32 am
1 stop12h 37m
San José Juan Santamaria Intl
Mon 3/2
9:40 am-11:38 pm
1 stop14h 58m
$421
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Mon 3/9
8:12 pm-6:36 am
1 stop10h 24m
Liberia
Wed 3/11
11:45 am-11:00 pm
1 stop11h 15m
$422
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Thu 3/5
8:16 am-11:15 pm
2 stops13h 59m
San José Juan Santamaria Intl
Thu 3/12
6:00 am-11:00 pm
2 stops17h 00m
$429
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Mon 4/13
7:05 pm-6:20 am
1 stop11h 15m
Liberia
Fri 4/17
7:40 am-11:02 pm
1 stop15h 22m
$431
Showing 1-10 of 15 results
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.
BOI-SJO
BOI-LIR
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
BOI-CR0
BOI-SJO
BOI-LIR
What is the cheapest month to book a flight from Boise to Costa Rica?
Currently, October is the cheapest month in which you can book a flight from Boise to Costa Rica (average of $163). Flying from Boise to Costa Rica in December is currently the most expensive (average of $568). 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.
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 February 11, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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.
Food
7.1
Crew
8.5
Overall
8.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Crew
8.5
Overall
8.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Crew
8.5
Overall
8.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Crew
8.5
Overall
8.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Crew
8.5
Overall
8.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Food
7.1
Crew
8.5
Overall
8.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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.
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Alternative routes for Boise to Costa Rica
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Boise and Costa Rica flights
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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 February 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$815 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$297 | Average$565 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$303 | Average$522 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$376 | Average$618 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$454 | Average$710 | FlexibilityNo cancel fee | On-time63% |