$216+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Aug 21 — Aug 281
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Costa Rica with Cheapflights
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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 July 22, 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 July 22, 2026.
This Avianca deal was found by Cheapflights users on 7/19. 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.
Sat 9/197:05 am
BOI
- SJO
2 stops16h 10m
Multiple Airlines
Sat 9/265:45 am
SJO
- BOI
2 stops17h 15m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$450
This oojo deal was found by Cheapflights users on 7/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:47 pm
BOI
- SJO
2 stops28h 28m
Multiple Airlines
Sat 9/265:45 am
SJO
- BOI
2 stops30h 48m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$461
This oojo deal was found by Cheapflights users on 7/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am
BOI
- SJO
2 stops24h 40m
Multiple Airlines
Sat 11/145:45 am
SJO
- BOI
2 stops18h 13m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$467
This Avianca deal was found by Cheapflights users on 7/18. 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.
Sat 11/217:40 am
BOI
- SJO
2 stops15h 00m
Multiple Airlines
Tue 12/15:45 am
SJO
- BOI
2 stops18h 10m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$469
This oojo deal was found by Cheapflights users on 7/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:05 am
BOI
- SJO
2 stops16h 10m
Multiple Airlines
Sun 9/209:40 am
SJO
- BOI
2 stops26h 53m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$485
This Justfly.com deal was found by Cheapflights users on 7/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:03 am
BOI
- SJO
2 stops15h 12m
Multiple Airlines
Tue 8/257:45 pm
SJO
- BOI
3 stops16h 48m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$489
This oojo deal was found by Cheapflights users on 7/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:05 am
BOI
- SJO
2 stops16h 35m
Multiple Airlines
Wed 8/269:40 am
SJO
- BOI
2 stops26h 53m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$492
This FlightHub deal was found by Cheapflights users on 7/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:57 pm
BOI
- SJO
3 stops16h 48m
Multiple Airlines
Mon 10/1912:40 pm
SJO
- BOI
3 stops23h 48m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 7/19. 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 9/107:05 pm
BOI
- SJO
1 stop12h 10m
United Airlines
Sun 9/208:45 am
SJO
- BOI
1 stop12h 46m
United Airlines
Deal found 7/19![United Airlines logo]()
$500
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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 12/66:51 pm
BOI
- LIR
1 stop10h 31m
Alaska Airlines
Fri 12/1111:22 am
LIR
- BOI
1 stop12h 33m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$530
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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 10/258:22 pm
BOI
- LIR
2 stops23h 29m
Alaska Airlines
Thu 10/299:16 am
LIR
- BOI
2 stops27h 19m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$535
This Expedia deal was found by Cheapflights users on 7/16. 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.
Tue 10/138:46 pm
BOI
- LIR
2 stops23h 08m
Alaska Airlines
Tue 10/209:16 am
LIR
- BOI
1 stop13h 41m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$586
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 July 22, 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 July 22, 2026.
This American Airlines deal was found by Cheapflights users on 7/18. 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 10/123:24 pm
BOI
- SJO
2 stops20h 36m
American Airlines
Mon 10/193:01 pm
SJO
- BOI
2 stops20h 24m
American Airlines
Deal found 7/18![American Airlines logo]()
$505
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/187:05 pm
BOI
- SJO
2 stops17h 16m
United Airlines
Sat 9/268:45 am
SJO
- BOI
1 stop10h 44m
United Airlines
Deal found 7/17![United Airlines logo]()
$521
This Travelocity deal was found by Cheapflights users on 7/19. 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 10/127:20 am
BOI
- LIR
1 stop12h 31m
Alaska Airlines
Tue 10/209:16 am
LIR
- BOI
2 stops24h 40m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$535
This Travelocity deal was found by Cheapflights users on 7/18. 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.
Sat 11/217:06 pm
BOI
- SJO
2 stops27h 09m
Multiple Airlines
Tue 12/112:40 pm
SJO
- BOI
3 stops35h 15m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$596
This Delta deal was found by Cheapflights users on 7/19. 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 9/2111:10 pm
BOI
- LIR
1 stop12h 50m
Delta
Mon 9/281:25 pm
LIR
- BOI
2 stops25h 19m
Delta
Deal found 7/19![Delta logo]()
$625
This Priceline deal was found by Cheapflights users on 7/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:57 pm
BOI
- LIR
1 stop24h 57m
Alaska Airlines
Tue 10/209:16 am
LIR
- BOI
1 stop13h 41m
Alaska Airlines
Deal found 7/16![Alaska Airlines logo]()
$602
This American Airlines deal was found by Cheapflights users on 7/21. 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 9/261:50 pm
BOI
- LIR
1 stop23h 57m
American Airlines
Thu 10/12:18 pm
LIR
- BOI
1 stop22h 42m
American Airlines
Deal found 7/21![American Airlines logo]()
$625
This United Airlines deal was found by Cheapflights users on 7/17. 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 10/2611:51 am
BOI
- SJO
1 stop19h 41m
United Airlines
Thu 10/297:45 am
SJO
- BOI
2 stops25h 53m
United Airlines
Deal found 7/17![United Airlines logo]()
$625
This United Airlines deal was found by Cheapflights users on 7/19. 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 1/1411:45 am
BOI
- SJO
2 stops31h 54m
United Airlines
Sun 1/246:40 am
SJO
- BOI
2 stops28h 03m
United Airlines
Deal found 7/19![United Airlines logo]()
$625
This American Airlines deal was found by Cheapflights users on 7/20. 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 9/203:21 pm
BOI
- LIR
2 stops21h 57m
American Airlines
Sun 9/272:18 pm
LIR
- BOI
2 stops24h 13m
American Airlines
Deal found 7/20![American Airlines logo]()
$630
This Delta deal was found by Cheapflights users on 7/19. 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 8/1711:10 pm
BOI
- LIR
1 stop12h 50m
Delta
Wed 8/261:25 pm
LIR
- BOI
2 stops20h 23m
Delta
Deal found 7/19![Delta logo]()
$699
This Delta deal was found by Cheapflights users on 7/20. 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 1/28:40 am
BOI
- SJO
2 stops21h 25m
Delta
Sat 1/97:05 am
SJO
- BOI
2 stops17h 03m
Delta
Deal found 7/20![Delta logo]()
$733
This American Airlines deal was found by Cheapflights users on 7/18. 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 9/16:44 am
BOI
- LIR
2 stops28h 45m
American Airlines
Tue 9/812:35 pm
LIR
- BOI
2 stops25h 56m
American Airlines
Deal found 7/18![American Airlines logo]()
$744
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/177:05 pm
BOI
- LIR
2 stops17h 05m
United Airlines
Mon 8/241:20 pm
LIR
- BOI
2 stops20h 15m
United Airlines
Deal found 7/19![United Airlines logo]()
$906
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/187:05 pm
BOI
- LIR
2 stops17h 05m
United Airlines
Mon 8/241:20 pm
LIR
- BOI
2 stops20h 15m
United Airlines
Deal found 7/19![United Airlines logo]()
$975
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/35:00 am
BOI
- LIR
1 stop10h 19m
United Airlines
Sun 8/98:30 am
LIR
- BOI
1 stop15h 25m
United Airlines
Deal found 7/20![United Airlines logo]()
$1,000
Last-minute flights from Boise to Costa RicaDiscover last-minute flight deals from Boise to Costa Rica. Data last updated July 22, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Costa Rica. Data last updated July 22, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 7/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:51 pm
BOI
- SJO
2 stops28h 24m
Multiple Airlines
Mon 8/104:35 pm
SJO
- BOI
2 stops30h 10m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$515
This Justfly.com deal was found by Cheapflights users on 7/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:51 pm
BOI
- SJO
2 stops28h 24m
Multiple Airlines
Wed 8/127:45 pm
SJO
- BOI
2 stops27h 00m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$524
This Expedia deal was found by Cheapflights users on 7/20. 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.
Mon 8/36:51 pm
BOI
- SJO
2 stops28h 24m
Multiple Airlines
Sun 8/95:45 am
SJO
- BOI
2 stops17h 00m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$616
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/35:00 am
BOI
- LIR
1 stop10h 19m
United Airlines
Sun 8/98:30 am
LIR
- BOI
1 stop15h 25m
United Airlines
Deal found 7/20![United Airlines logo]()
$1,000
This Gotogate deal was found by Cheapflights users on 7/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/48:03 am
BOI
- SJO
2 stops15h 12m
Multiple Airlines
Fri 8/75:05 am
SJO
- BOI
2 stops17h 02m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$569
This Delta deal was found by Cheapflights users on 7/19. 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 8/1711:10 pm
BOI
- LIR
1 stop12h 50m
Delta
Wed 8/261:25 pm
LIR
- BOI
2 stops20h 23m
Delta
Deal found 7/19![Delta logo]()
$699
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/177:05 pm
BOI
- LIR
2 stops17h 05m
United Airlines
Mon 8/241:20 pm
LIR
- BOI
2 stops20h 15m
United Airlines
Deal found 7/19![United Airlines logo]()
$906
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/172:49 pm
BOI
- LIR
2 stops20h 40m
American Airlines
Mon 8/242:15 pm
LIR
- BOI
1 stop21h 01m
American Airlines
Deal found 7/19![American Airlines logo]()
$1,035
This Avianca deal was found by Cheapflights users on 7/19. 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 8/188:03 am
BOI
- SJO
2 stops15h 12m
Multiple Airlines
Tue 8/255:45 am
SJO
- BOI
2 stops17h 15m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/187:05 pm
BOI
- LIR
2 stops17h 05m
United Airlines
Mon 8/241:20 pm
LIR
- BOI
2 stops20h 15m
United Airlines
Deal found 7/19![United Airlines logo]()
$975
This oojo deal was found by Cheapflights users on 7/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:05 am
BOI
- SJO
2 stops16h 35m
Multiple Airlines
Wed 8/269:40 am
SJO
- BOI
2 stops26h 53m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$492
This Delta deal was found by Cheapflights users on 7/18. 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 8/2111:10 pm
BOI
- SJO
1 stop12h 39m
Delta
Wed 8/261:14 pm
SJO
- BOI
2 stops20h 34m
Delta
Deal found 7/18![Delta logo]()
$602
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 July 22, 2026.
Search for one-way flight options from Boise to Costa Rica. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
This Avianca deal was found by Cheapflights users on 7/20. 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.
Mon 11/27:00 am
BOI
- SJO
2 stops15h 15m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$216
This Avianca deal was found by Cheapflights users on 7/18. 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.
Mon 8/176:51 pm
BOI
- SJO
2 stops13h 54m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/20. 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 11/26:59 pm
BOI
- SJO
1 stop12h 33m
United Airlines
Deal found 7/20![United Airlines logo]()
$229
This FlightHub deal was found by Cheapflights users on 7/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:00 am
BOI
- SJO
2 stops15h 15m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$231
This Justfly.com deal was found by Cheapflights users on 7/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:57 pm
BOI
- SJO
2 stops16h 28m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$239
This Gotogate deal was found by Cheapflights users on 7/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:40 am
BOI
- SJO
2 stops14h 35m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$241
This Priceline deal was found by Cheapflights users on 7/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:20 am
BOI
- LIR
1 stop12h 31m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$249
This oojo deal was found by Cheapflights users on 7/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:00 am
BOI
- SJO
2 stops29h 40m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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 10/118:23 pm
BOI
- LIR
2 stops23h 28m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 7/18. 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 8/1711:10 pm
BOI
- SJO
1 stop12h 39m
Delta
Deal found 7/18![Delta logo]()
$258
This Southwest deal was found by Cheapflights users on 7/18. 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.
Sat 11/288:50 pm
BOI
- SJO
2 stops15h 25m
Southwest
Deal found 7/18![Southwest logo]()
$279
This American Airlines deal was found by Cheapflights users on 7/20. 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 10/123:24 pm
BOI
- LIR
2 stops21h 54m
American Airlines
Deal found 7/20![American Airlines logo]()
$290
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 July 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $450 (Avianca) |
One-way from | $216 (Avianca) |
Popular in | December |
Cheapest in | January |
Average price | $555 |
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 22, 2026.
Use the filters below to find and compare flights from Boise to Costa Rica that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Mon 10/12
3:24 pm-12:00 pm
2 stops20h 36m
San José Juan Santamaria Intl
Mon 10/19
3:01 pm-11:25 am
2 stops20h 24m
$505
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Fri 9/18
7:05 pm-12:21 pm
2 stops17h 16m
San José Juan Santamaria Intl
Sat 9/26
8:45 am-7:29 pm
1 stop10h 44m
$521
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Mon 10/12
7:20 am-7:51 pm
1 stop12h 31m
Liberia
Tue 10/20
9:16 am-9:56 am
2 stops24h 40m
$535
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sat 11/21
7:06 pm-11:15 pm
2 stops27h 09m
San José Juan Santamaria Intl
Tue 12/1
12:40 pm-10:55 pm
3 stops35h 15m
$596
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Tue 10/13
6:57 pm-7:54 pm
1 stop24h 57m
Liberia
Tue 10/20
9:16 am-10:57 pm
1 stop13h 41m
$602
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Mon 9/21
11:10 pm-12:00 pm
1 stop12h 50m
Liberia
Mon 9/28
1:25 pm-2:44 pm
2 stops25h 19m
$625
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Sat 9/26
1:50 pm-1:47 pm
1 stop23h 57m
Liberia
Thu 10/1
2:18 pm-1:00 pm
1 stop22h 42m
$625
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Mon 10/26
11:51 am-7:32 am
1 stop19h 41m
San José Juan Santamaria Intl
Thu 10/29
7:45 am-9:38 am
2 stops25h 53m
$625
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Thu 1/14
11:45 am-8:39 pm
2 stops31h 54m
San José Juan Santamaria Intl
Sun 1/24
6:40 am-9:43 am
2 stops28h 03m
$625
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Sun 9/20
3:21 pm-1:18 pm
2 stops21h 57m
Liberia
Sun 9/27
2:18 pm-2:31 pm
2 stops24h 13m
$630
Showing 1-10 of 30 resultsSorted by cheapest first
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 $438). Flying from Boise to Costa Rica in December is currently the most expensive (average of $941). 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.
How far ahead should I book a flight from Boise to Costa Rica?
The best time to book flights from Boise to Costa Rica is 55 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 22, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta 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.
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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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Complete your trip
Complete your trip to Costa Rica by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Boise to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boise and Costa Rica flights
Browse other Boise and Costa Rica flight options. Last updated on July 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$815 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$491 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$315 | Average$542 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$371 | Average$570 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$454 | Average$698 | FlexibilityNo cancel fee | On-time63% |