$253+ Cheap flights from Boise (BOI) to Costa Rica
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Nov 25 — Dec 21
Round-trip
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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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 October 26, 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 October 26, 2026.
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/87:10 pm -
1 stop12h 22m
Sat 11/147:30 am -
1 stop15h 04m
Deal found 10/22![United Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:10 pm -
1 stop12h 22m
Tue 11/179:40 am -
1 stop12h 35m
Deal found 10/26![United Airlines logo]()
$583
This American Airlines deal was found by Cheapflights users on 10/24. 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 12/82:42 pm -
2 stops20h 55m
Tue 12/152:46 pm -
1 stop24h 06m
Deal found 10/24![American Airlines logo]()
$597
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Thu 11/122:41 pm -
1 stop22h 05m
Tue 11/172:46 pm -
1 stop24h 05m
Deal found 10/21![American Airlines logo]()
$604
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 12/22:49 pm -
2 stops21h 11m
Wed 12/163:59 pm -
2 stops22h 27m
Deal found 10/21![American Airlines logo]()
$623
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 12/66:14 pm -
2 stops17h 23m
Sun 12/133:54 pm -
2 stops22h 58m
Deal found 10/21![American Airlines logo]()
$628
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/32:41 pm -
2 stops21h 20m
Mon 11/92:46 pm -
2 stops23h 37m
Deal found 10/22![American Airlines logo]()
$632
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:41 pm -
2 stops21h 20m
Tue 11/173:54 pm -
2 stops22h 57m
Deal found 10/26![American Airlines logo]()
$633
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/245:44 pm -
1 stop21h 26m
Thu 12/31:00 pm -
1 stop9h 27m
Deal found 10/22![United Airlines logo]()
$653
This American Airlines deal was found by Cheapflights users on 10/22. 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 12/62:49 pm -
2 stops20h 46m
Sun 12/133:19 pm -
2 stops23h 09m
Deal found 10/22![American Airlines logo]()
$658
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/242:42 pm -
2 stops20h 49m
Thu 12/33:35 pm -
2 stops20h 49m
Deal found 10/22![American Airlines logo]()
$663
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:49 pm -
2 stops20h 46m
Sat 12/123:35 pm -
2 stops23h 17m
Deal found 10/26![American Airlines logo]()
$683
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 October 26, 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 October 26, 2026.
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2610:39 am -
1 stop10h 21m
Sat 3/67:30 am -
1 stop14h 46m
Deal found 10/21![United Airlines logo]()
$581
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/191:50 pm -
2 stops21h 45m
Wed 1/272:00 pm -
2 stops24h 10m
Deal found 10/26![Delta logo]()
$623
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 1/307:25 am -
1 stop12h 06m
Wed 2/38:33 am -
2 stops14h 09m
Deal found 10/23![Alaska Airlines logo]()
$662
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:49 pm -
2 stops20h 46m
Sat 12/123:35 pm -
2 stops23h 17m
Deal found 10/25![American Airlines logo]()
$696
This United Airlines deal was found by Cheapflights users on 10/23. 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 2/44:10 pm -
2 stops19h 46m
Wed 2/101:00 pm -
1 stop9h 33m
Deal found 10/23![United Airlines logo]()
$629
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/222:21 pm -
1 stop19h 59m
Tue 2/23:25 pm -
2 stops28h 52m
Deal found 10/26![Delta logo]()
$653
This Expedia deal was found by Cheapflights users on 10/25. 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.
Fri 2/56:31 pm -
1 stop25h 00m
Sat 2/136:23 pm -
1 stop27h 31m
Deal found 10/25![Alaska Airlines logo]()
$675
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/245:44 pm -
1 stop21h 26m
Thu 12/31:00 pm -
1 stop9h 27m
Deal found 10/22![United Airlines logo]()
$653
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/26:25 am -
2 stops10h 51m
Thu 3/186:30 am -
1 stop14h 46m
Deal found 10/26![United Airlines logo]()
$692
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/114:05 pm -
2 stops18h 06m
Sat 4/176:40 am -
1 stop14h 36m
Deal found 10/21![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:24 pm -
2 stops19h 58m
Fri 12/186:40 am -
2 stops15h 56m
Deal found 10/21![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:24 pm -
1 stop15h 08m
Sun 12/132:25 pm -
2 stops21h 43m
Deal found 10/21![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:44 pm -
2 stops18h 38m
Thu 11/199:40 am -
1 stop14h 53m
Deal found 10/21![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/14:24 pm -
1 stop15h 08m
Sun 12/132:25 pm -
2 stops21h 43m
Deal found 10/21![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/212:48 pm -
1 stop18h 44m
Sat 12/192:25 pm -
2 stops20h 34m
Deal found 10/21![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/176:20 am -
1 stop8h 50m
Sun 1/242:20 pm -
2 stops20h 39m
Deal found 10/26![United Airlines logo]()
$722
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/154:10 pm -
2 stops22h 44m
Thu 1/211:00 pm -
1 stop9h 33m
Deal found 10/26![United Airlines logo]()
$783
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/268:15 am -
2 stops27h 55m
Fri 12/42:20 pm -
2 stops25h 30m
Deal found 10/22![United Airlines logo]()
$788
This United Airlines deal was found by Cheapflights users on 10/25. 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 2/132:35 pm -
2 stops20h 40m
Sun 2/218:45 am -
2 stops27h 20m
Deal found 10/25![United Airlines logo]()
$798
This United Airlines deal was found by Cheapflights users on 10/25. 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 3/107:00 am -
1 stop14h 00m
Fri 3/1912:15 am -
2 stops21h 00m
Deal found 10/25![United Airlines logo]()
$804
Last-minute flights from Boise to Costa RicaDiscover last-minute flight deals from Boise to Costa Rica. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Costa Rica. Data last updated October 26, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/32:41 pm -
2 stops21h 20m
Mon 11/92:46 pm -
2 stops23h 37m
Deal found 10/22![American Airlines logo]()
$632
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/87:10 pm -
1 stop12h 22m
Sat 11/149:40 am -
1 stop14h 53m
Deal found 10/22![United Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:10 pm -
1 stop12h 22m
Tue 11/179:40 am -
1 stop12h 35m
Deal found 10/26![United Airlines logo]()
$583
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:41 pm -
2 stops21h 20m
Tue 11/173:54 pm -
2 stops22h 57m
Deal found 10/26![American Airlines logo]()
$633
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Thu 11/122:41 pm -
1 stop22h 05m
Tue 11/172:46 pm -
1 stop24h 05m
Deal found 10/21![American Airlines logo]()
$604
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1612:00 pm -
1 stop19h 32m
Thu 11/199:40 am -
1 stop14h 53m
Deal found 10/21![United Airlines logo]()
$711
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/245:44 pm -
1 stop21h 26m
Thu 12/31:00 pm -
1 stop9h 27m
Deal found 10/22![United Airlines logo]()
$653
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/242:42 pm -
2 stops20h 49m
Thu 12/33:35 pm -
2 stops20h 49m
Deal found 10/22![American Airlines logo]()
$663
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/242:42 pm -
2 stops22h 38m
Wed 12/23:35 pm -
2 stops23h 20m
Deal found 10/22![American Airlines logo]()
$783
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/268:15 am -
2 stops27h 55m
Thu 12/31:00 pm -
2 stops23h 08m
Deal found 10/22![United Airlines logo]()
$788
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/276:20 am -
2 stops29h 36m
Thu 12/31:00 pm -
2 stops23h 08m
Deal found 10/22![United Airlines logo]()
$763
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/277:10 pm -
2 stops19h 44m
Sat 12/52:20 pm -
2 stops25h 30m
Deal found 10/22![United Airlines logo]()
$793
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 October 26, 2026.
Search for one-way flight options from Boise to Costa Rica. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/318:55 pm -
2 stops15h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 10/22. 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 2/184:05 pm -
1 stop15h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 10/23. 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 1/184:35 pm -
2 stops20h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$274
This American Airlines deal was found by Cheapflights users on 10/23. 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 1/2012:28 pm -
2 stops22h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/76:30 am -
1 stop14h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:59 pm -
3 stops36h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 10/23. 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 1/177:04 am -
1 stop24h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 10/23. 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 1/1612:36 pm -
1 stop22h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/177:53 pm -
3 stops39h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/166:00 am -
3 stops29h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 1/186:31 pm -
1 stop27h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Alaska Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/187:53 pm -
3 stops39h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$378
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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $563 (American Airlines) |
One-way from | $253 (Southwest) |
Popular in | December |
Cheapest in | April |
Average price | $563 |
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 7,457,451 searches. Data last updated October 26, 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 Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Sun 1/31
8:55 pm-1:45 pm
2 stops15h 50m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$253
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Tue 1/26
11:58 am-8:32 am
1 stop19h 34m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$269
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Sun 1/31
4:10 pm-8:32 am
1 stop15h 22m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$269
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Thu 2/18
4:05 pm-8:32 am
1 stop15h 27m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$269
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Tue 2/16
4:08 pm-8:32 am
1 stop15h 24m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$269
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Sat 1/16
2:35 pm-1:22 pm
2 stops21h 47m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$334
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Sat 11/7
6:30 am-10:00 pm
1 stop14h 30m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$334
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Thu 1/21
4:10 pm-8:32 am
1 stop15h 22m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$334
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Sun 1/17
7:04 am-8:32 am
1 stop24h 28m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$348
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Fri 2/26
10:39 am-10:00 pm
1 stop10h 21m
San José Juan Santamaria Intl
Sat 3/6
7:30 am-9:16 pm
1 stop14h 46m
$581
Showing 1-10 of 31 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, April is the cheapest month in which you can book a flight from Boise to Costa Rica (average of $522). Flying from Boise to Costa Rica in December is currently the most expensive (average of $1,325). 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 14 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 October 26, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andUnited 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.
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
2.0
MediocreChris,Aug 2026
GEG - SFO
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
See prices for flight routes from nearby airports that may be better suited for you.
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 October 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Boise to Costa Rica
Discover the top 4 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 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$353 | Average$622 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$404 | Average$700 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$454 | Average$607 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$485 | Average$560 | FlexibilityNo cancel fee | On-time75% |