$179+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
May 1 — May 81
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 April 1, 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 April 1, 2026.
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/255:00 am
BOI
- SJO
2 stops14h 37m
United Airlines
Sat 5/28:45 am
SJO
- BOI
1 stop12h 32m
United Airlines
Deal found 4/1![United Airlines logo]()
$400
This American Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:07 pm
BOI
- SJO
2 stops19h 49m
American Airlines
Thu 8/62:15 pm
SJO
- BOI
2 stops21h 11m
American Airlines
Deal found 3/28![American Airlines logo]()
$405
This American Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/284:07 pm
BOI
- SJO
2 stops19h 49m
American Airlines
Tue 8/1112:50 pm
SJO
- BOI
2 stops22h 36m
American Airlines
Deal found 3/28![American Airlines logo]()
$445
This Travelocity deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:20 pm
BOI
- SJO
2 stops28h 13m
Alaska Airlines
Sat 5/1612:53 am
SJO
- BOI
2 stops38h 41m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Sun 5/38:45 am
SJO
- BOI
1 stop12h 32m
United Airlines
Deal found 3/28![United Airlines logo]()
$462
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:08 pm
BOI
- SJO
2 stops53h 25m
Alaska Airlines
Sat 5/1612:53 am
SJO
- BOI
2 stops38h 41m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$473
This United Airlines deal was found by Cheapflights users on 4/1. 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 5/307:05 pm
BOI
- SJO
1 stop12h 10m
United Airlines
Sat 6/68:45 am
SJO
- BOI
1 stop12h 55m
United Airlines
Deal found 4/1![United Airlines logo]()
$484
This Orbitz deal was found by Cheapflights users on 4/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:51 pm
BOI
- SJO
2 stops26h 42m
Alaska Airlines
Fri 6/512:53 am
SJO
- BOI
2 stops34h 10m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$485
This Alaska Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:12 pm
BOI
- SJO
2 stops27h 45m
Alaska Airlines
Sat 11/211:45 am
SJO
- BOI
1 stop12h 59m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$489
This KAYAK deal was found by Cheapflights users on 3/31. 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.
Tue 4/211:29 pm
BOI
- SJO
2 stops21h 56m
GOL
Wed 4/2912:35 pm
SJO
- BOI
2 stops24h 16m
GOL
Deal found 3/31![GOL logo]()
$494
This Avianca deal was found by Cheapflights users on 3/30. 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 5/148:38 am
BOI
- SJO
2 stops14h 37m
Multiple Airlines
Thu 5/215:05 am
SJO
- BOI
2 stops12h 38m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$495
This Southwest deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:40 pm
BOI
- LIR
2 stops19h 35m
Southwest
Mon 4/272:10 pm
LIR
- BOI
2 stops10h 50m
Southwest
Deal found 3/28![Southwest logo]()
$557
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 April 1, 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 April 1, 2026.
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/257:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Sat 5/28:45 am
SJO
- BOI
1 stop12h 32m
United Airlines
Deal found 4/1![United Airlines logo]()
$400
This Alaska Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Thu 5/1412:53 am
SJO
- BOI
2 stops23h 05m
Alaska Airlines
Deal found 3/28![Alaska Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 4/1. 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 6/1712:12 pm
BOI
- SJO
1 stop10h 30m
American Airlines
Fri 6/2611:59 pm
SJO
- BOI
1 stop15h 08m
American Airlines
Deal found 4/1![American Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Sun 5/38:45 am
SJO
- BOI
1 stop12h 32m
United Airlines
Deal found 3/28![United Airlines logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:35 am
BOI
- SJO
2 stops16h 58m
Alaska Airlines
Sat 5/3012:53 am
SJO
- BOI
2 stops23h 05m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$573
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/217:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Wed 4/298:45 am
SJO
- BOI
1 stop11h 08m
United Airlines
Deal found 3/31![United Airlines logo]()
$524
This American Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:53 pm
BOI
- LIR
2 stops21h 31m
American Airlines
Mon 5/42:40 pm
LIR
- BOI
2 stops22h 23m
American Airlines
Deal found 3/28![American Airlines logo]()
$605
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 5/26:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Tue 5/512:55 am
SJO
- BOI
2 stops22h 07m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$589
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 4/218:07 am
BOI
- SJO
1 stop15h 46m
Alaska Airlines
Tue 4/2812:55 am
SJO
- BOI
1 stop11h 39m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$604
This United Airlines deal was found by Cheapflights users on 4/1. 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 6/155:00 am
BOI
- LIR
1 stop10h 19m
United Airlines
Mon 6/223:27 pm
LIR
- BOI
2 stops18h 18m
United Airlines
Deal found 4/1![United Airlines logo]()
$605
This American Airlines deal was found by Cheapflights users on 3/31. 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 6/25:57 pm
BOI
- LIR
2 stops17h 38m
American Airlines
Mon 6/152:45 pm
LIR
- BOI
2 stops19h 44m
American Airlines
Deal found 3/31![American Airlines logo]()
$722
This Alaska Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:14 pm
BOI
- LIR
1 stop11h 06m
Alaska Airlines
Sat 5/25:09 pm
LIR
- BOI
2 stops29h 53m
Alaska Airlines
Deal found 3/28![Alaska Airlines logo]()
$625
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:30 am
BOI
- LIR
1 stop8h 49m
United Airlines
Wed 7/293:27 pm
LIR
- BOI
2 stops22h 08m
United Airlines
Deal found 3/28![United Airlines logo]()
$707
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 7/206:51 pm
BOI
- LIR
1 stop11h 46m
Alaska Airlines
Thu 7/306:39 pm
LIR
- BOI
2 stops29h 12m
Alaska Airlines
Deal found 3/27![Alaska Airlines logo]()
$678
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 6/211:56 am
BOI
- LIR
2 stops18h 24m
Alaska Airlines
Mon 6/156:39 pm
LIR
- BOI
2 stops20h 47m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$693
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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 7/248:03 am
BOI
- LIR
1 stop9h 26m
Alaska Airlines
Fri 7/316:39 pm
LIR
- BOI
2 stops20h 47m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$761
This Alaska Airlines deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:14 pm
BOI
- LIR
1 stop11h 06m
Alaska Airlines
Mon 5/411:20 am
LIR
- BOI
1 stop11h 41m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$762
Last-minute flights from Boise to Costa RicaDiscover last-minute flight deals from Boise to Costa Rica. Data last updated April 1, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Costa Rica. Data last updated April 1, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:40 pm
BOI
- LIR
2 stops19h 35m
Southwest
Mon 4/272:10 pm
LIR
- BOI
2 stops10h 50m
Southwest
Deal found 3/28![Southwest logo]()
$557
This KAYAK deal was found by Cheapflights users on 3/31. 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.
Tue 4/211:29 pm
BOI
- SJO
2 stops21h 56m
GOL
Wed 4/2912:35 pm
SJO
- BOI
2 stops24h 16m
GOL
Deal found 3/31![GOL logo]()
$494
This KAYAK deal was found by Cheapflights users on 3/31. 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 4/226:00 am
BOI
- SJO
2 stops37h 07m
GOL
Wed 4/292:22 pm
SJO
- BOI
2 stops22h 29m
GOL
Deal found 3/31![GOL logo]()
$513
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Sun 5/38:45 am
SJO
- BOI
1 stop12h 32m
United Airlines
Deal found 3/28![United Airlines logo]()
$462
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/255:00 am
BOI
- SJO
2 stops14h 37m
United Airlines
Sat 5/28:45 am
SJO
- BOI
1 stop12h 32m
United Airlines
Deal found 4/1![United Airlines logo]()
$400
This KAYAK deal was found by Cheapflights users on 4/1. 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.
Sat 4/251:29 pm
BOI
- SJO
2 stops21h 38m
GOL
Sat 5/212:10 pm
SJO
- BOI
2 stops34h 44m
GOL
Deal found 4/1![GOL logo]()
$512
This Alaska Airlines deal was found by Cheapflights users on 3/31. 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 5/106:00 am
BOI
- SJO
2 stops17h 45m
Alaska Airlines
Thu 5/1412:53 am
SJO
- BOI
2 stops40h 50m
Alaska Airlines
Deal found 3/31![Alaska Airlines logo]()
$502
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:08 pm
BOI
- SJO
2 stops53h 25m
Alaska Airlines
Sat 5/1612:53 am
SJO
- BOI
2 stops38h 41m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$473
This Travelocity deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:20 pm
BOI
- SJO
2 stops28h 13m
Alaska Airlines
Sat 5/1612:53 am
SJO
- BOI
2 stops38h 41m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$460
This Avianca deal was found by Cheapflights users on 3/30. 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 5/148:38 am
BOI
- SJO
2 stops14h 37m
Multiple Airlines
Thu 5/215:05 am
SJO
- BOI
2 stops12h 38m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$495
This United Airlines deal was found by Cheapflights users on 4/1. 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 5/307:05 pm
BOI
- SJO
1 stop12h 10m
United Airlines
Sat 6/68:45 am
SJO
- BOI
1 stop12h 55m
United Airlines
Deal found 4/1![United Airlines logo]()
$484
This Orbitz deal was found by Cheapflights users on 4/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:51 pm
BOI
- SJO
2 stops26h 42m
Alaska Airlines
Fri 6/512:53 am
SJO
- BOI
2 stops34h 10m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$485
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 April 1, 2026.
Search for one-way flight options from Boise to Costa Rica. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Deal found 3/28![United Airlines logo]()
$179
This Trip.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/238:11 am
BOI
- SJO
2 stops15h 04m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$193
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/1112:30 pm
BOI
- SJO
1 stop18h 45m
United Airlines
Deal found 3/31![United Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
BOI
- LIR
3 stops24h 20m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:13 pm
BOI
- LIR
3 stops46h 30m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:29 pm
BOI
- LIR
2 stops20h 56m
United Airlines
Deal found 3/28![United Airlines logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:22 pm
BOI
- LIR
3 stops21h 53m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$433
This business-class.com deal was found by Cheapflights users on 3/30. 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 4/167:40 am
BOI
- SJO
3 stops15h 35m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$869
This Delta deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:35 pm
BOI
- SJO
1 stop12h 21m
Delta
Deal found 4/1![Delta logo]()
$1,603
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 April 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $400 (United Airlines) |
One-way from | $179 (United Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $499 |
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 April 1, 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
Sat 4/25
7:03 pm-7:15 am
1 stop12h 12m
San José Juan Santamaria Intl
Sat 5/2
8:45 am-9:17 pm
1 stop12h 32m
$400
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Thu 4/23
7:03 pm-7:15 am
1 stop12h 12m
San José Juan Santamaria Intl
Sun 5/3
8:45 am-9:17 pm
1 stop12h 32m
$462
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Tue 4/21
7:03 pm-7:15 am
1 stop12h 12m
San José Juan Santamaria Intl
Wed 4/29
8:45 am-7:53 pm
1 stop11h 08m
$524
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sun 5/10
6:00 am-11:45 pm
2 stops17h 45m
San José Juan Santamaria Intl
Thu 5/14
12:53 am-11:58 pm
2 stops23h 05m
$529
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Wed 6/17
12:12 pm-10:42 pm
1 stop10h 30m
San José Juan Santamaria Intl
Fri 6/26
11:59 pm-3:07 pm
1 stop15h 08m
$559
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Wed 5/20
6:35 am-11:33 pm
2 stops16h 58m
San José Juan Santamaria Intl
Sat 5/30
12:53 am-11:58 pm
2 stops23h 05m
$573
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sat 5/2
6:00 am-11:45 pm
2 stops17h 45m
San José Juan Santamaria Intl
Tue 5/5
12:55 am-11:02 pm
2 stops22h 07m
$589
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Tue 4/21
8:07 am-11:53 pm
1 stop15h 46m
San José Juan Santamaria Intl
Tue 4/28
12:55 am-12:34 pm
1 stop11h 39m
$604
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Tue 4/28
1:53 pm-11:24 am
2 stops21h 31m
Liberia
Mon 5/4
2:40 pm-1:03 pm
2 stops22h 23m
$605
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Mon 6/15
5:00 am-3:19 pm
1 stop10h 19m
Liberia
Mon 6/22
3:27 pm-9:45 am
2 stops18h 18m
$605
Showing 1-10 of 24 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 $165). Flying from Boise to Costa Rica in December is currently the most expensive (average of $561). 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 April 1, 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.
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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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Complete your trip
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Boise and Costa Rica flights
Browse other Boise and Costa Rica flight options. Last updated on April 1, 2026.
Popular flight searches
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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 April 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$815 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$500 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$297 | Average$533 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$376 | Average$617 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$454 | Average$698 | FlexibilityNo cancel fee | On-time63% |