$211+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Jul 14 — Jul 211
Round-trip
1 adult, Economy
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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 June 14, 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 June 14, 2026.
This oojo deal was found by Cheapflights users on 6/11. 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.
Tue 8/48:03 am
BOI
- SJO
2 stops15h 12m
Multiple Airlines
Wed 8/129:40 am
SJO
- BOI
2 stops24h 32m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$442
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:26 am
BOI
- SJO
2 stops25h 19m
Multiple Airlines
Sat 10/109:40 am
SJO
- BOI
2 stops26h 48m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$445
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/154:05 pm
BOI
- SJO
1 stop15h 27m
United Airlines
Sun 11/229:40 am
SJO
- BOI
1 stop10h 36m
United Airlines
Deal found 6/10![United Airlines logo]()
$448
This Avianca deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:00 am
BOI
- SJO
2 stops15h 15m
Multiple Airlines
Sun 11/225:45 am
SJO
- BOI
2 stops18h 10m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$450
This Avianca deal was found by Cheapflights users on 6/11. 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 12/38:18 am
BOI
- SJO
2 stops13h 57m
Multiple Airlines
Thu 12/105:45 am
SJO
- BOI
2 stops18h 10m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$467
This oojo deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:18 am
BOI
- SJO
2 stops14h 22m
Multiple Airlines
Tue 12/87:50 pm
SJO
- BOI
2 stops28h 05m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$472
This American Airlines deal was found by Cheapflights users on 6/11. 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 9/201:50 pm
BOI
- SJO
2 stops22h 09m
American Airlines
Mon 9/282:57 pm
SJO
- BOI
2 stops23h 34m
American Airlines
Deal found 6/11![American Airlines logo]()
$475
This American Airlines deal was found by Cheapflights users on 6/11. 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 9/201:50 pm
BOI
- SJO
2 stops22h 09m
American Airlines
Sun 9/272:57 pm
SJO
- BOI
2 stops22h 03m
American Airlines
Deal found 6/11![American Airlines logo]()
$480
This Alaska Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:18 am
BOI
- LIR
1 stop9h 07m
Alaska Airlines
Thu 12/107:35 pm
LIR
- BOI
1 stop19h 09m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$575
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:36 pm
BOI
- LIR
2 stops19h 39m
American Airlines
Wed 7/2212:22 pm
LIR
- BOI
2 stops22h 57m
American Airlines
Deal found 6/9![American Airlines logo]()
$585
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:00 am
BOI
- LIR
1 stop8h 08m
United Airlines
Sat 11/148:35 am
LIR
- BOI
2 stops16h 24m
United Airlines
Deal found 6/9![United Airlines logo]()
$625
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:25 pm
BOI
- LIR
1 stop24h 20m
American Airlines
Thu 12/103:10 pm
LIR
- BOI
1 stop22h 24m
American Airlines
Deal found 6/9![American Airlines logo]()
$654
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 June 14, 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 June 14, 2026.
This oojo deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo 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
Wed 8/129:40 am
SJO
- BOI
2 stops24h 32m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:45 am
BOI
- SJO
2 stops31h 54m
United Airlines
Tue 12/89:40 am
SJO
- BOI
1 stop12h 35m
United Airlines
Deal found 6/9![United Airlines logo]()
$533
This Delta deal was found by Cheapflights users on 6/11. 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.
Sun 9/2011:35 pm
BOI
- SJO
1 stop12h 19m
Delta
Mon 9/281:25 pm
SJO
- BOI
2 stops25h 19m
Delta
Deal found 6/11![Delta logo]()
$563
This Alaska Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:18 am
BOI
- LIR
1 stop9h 07m
Alaska Airlines
Thu 12/107:35 pm
LIR
- BOI
1 stop19h 09m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$575
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:06 pm
BOI
- LIR
2 stops21h 10m
American Airlines
Sat 11/141:40 pm
LIR
- BOI
2 stops23h 58m
American Airlines
Deal found 6/9![American Airlines logo]()
$605
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:18 am
BOI
- SJO
2 stops13h 57m
Multiple Airlines
Thu 12/105:45 am
SJO
- BOI
2 stops18h 10m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$478
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/207:05 pm
BOI
- SJO
1 stop12h 10m
United Airlines
Mon 9/288:45 am
SJO
- BOI
1 stop15h 14m
United Airlines
Deal found 6/11![United Airlines logo]()
$559
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:18 am
BOI
- SJO
2 stops13h 57m
Multiple Airlines
Tue 12/812:40 pm
SJO
- BOI
3 stops26h 04m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$529
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:51 pm
BOI
- SJO
1 stop28h 06m
Alaska Airlines
Wed 12/91:45 am
SJO
- BOI
1 stop12h 59m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$634
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/77:00 am
BOI
- SJO
2 stops27h 11m
United Airlines
Mon 7/138:45 am
SJO
- BOI
1 stop12h 55m
United Airlines
Deal found 6/11![United Airlines logo]()
$595
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:25 pm
BOI
- LIR
2 stops20h 20m
American Airlines
Sat 11/143:13 pm
LIR
- BOI
2 stops22h 53m
American Airlines
Deal found 6/9![American Airlines logo]()
$694
This Priceline deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:51 pm
BOI
- SJO
1 stop28h 06m
Alaska Airlines
Mon 12/71:45 am
SJO
- BOI
1 stop12h 59m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$634
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:00 am
BOI
- LIR
1 stop8h 08m
United Airlines
Thu 12/1012:50 pm
LIR
- BOI
1 stop9h 26m
United Airlines
Deal found 6/9![United Airlines logo]()
$600
This oojo deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:03 am
BOI
- SJO
2 stops15h 37m
Multiple Airlines
Tue 7/712:40 pm
SJO
- BOI
3 stops21h 32m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$632
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:30 am
BOI
- LIR
2 stops29h 40m
United Airlines
Wed 9/21:20 pm
LIR
- BOI
2 stops20h 15m
United Airlines
Deal found 6/10![United Airlines logo]()
$705
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:46 pm
BOI
- LIR
1 stop21h 33m
United Airlines
Sun 7/194:05 pm
LIR
- BOI
1 stop30h 00m
United Airlines
Deal found 6/13![United Airlines logo]()
$740
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:05 pm
BOI
- LIR
2 stops19h 51m
United Airlines
Sat 7/188:30 am
LIR
- BOI
1 stop11h 35m
United Airlines
Deal found 6/13![United Airlines logo]()
$745
Last-minute flights from Boise to Costa RicaDiscover last-minute flight deals from Boise to Costa Rica. Data last updated June 14, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Costa Rica. Data last updated June 14, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:27 am
BOI
- LIR
1 stop8h 10m
American Airlines
Wed 7/2212:22 pm
LIR
- BOI
2 stops22h 57m
American Airlines
Deal found 6/9![American Airlines logo]()
$718
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:30 am
BOI
- LIR
1 stop8h 49m
United Airlines
Sat 7/44:05 pm
LIR
- BOI
2 stops21h 03m
United Airlines
Deal found 6/9![United Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 6/11. 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 6/137:05 pm
BOI
- SJO
1 stop12h 10m
United Airlines
Tue 6/238:45 am
SJO
- BOI
1 stop15h 10m
United Airlines
Deal found 6/11![United Airlines logo]()
$640
This oojo deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:03 am
BOI
- SJO
2 stops15h 37m
Multiple Airlines
Tue 7/75:05 am
SJO
- BOI
2 stops17h 40m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$598
This oojo deal was found by Cheapflights users on 6/11. 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.
Tue 7/78:03 am
BOI
- SJO
2 stops24h 42m
Multiple Airlines
Mon 7/139:40 am
SJO
- BOI
2 stops24h 32m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$591
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/77:00 am
BOI
- SJO
2 stops27h 11m
United Airlines
Mon 7/138:45 am
SJO
- BOI
1 stop12h 55m
United Airlines
Deal found 6/11![United Airlines logo]()
$595
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:46 pm
BOI
- LIR
2 stops16h 04m
United Airlines
Sat 7/184:05 pm
LIR
- BOI
2 stops24h 39m
United Airlines
Deal found 6/10![United Airlines logo]()
$745
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:05 pm
BOI
- LIR
2 stops19h 20m
United Airlines
Sun 7/194:05 pm
LIR
- BOI
2 stops24h 39m
United Airlines
Deal found 6/13![United Airlines logo]()
$725
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:36 pm
BOI
- LIR
2 stops19h 39m
American Airlines
Wed 7/2212:22 pm
LIR
- BOI
2 stops22h 57m
American Airlines
Deal found 6/9![American Airlines logo]()
$585
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:00 am
BOI
- SJO
2 stops27h 11m
United Airlines
Sat 7/256:00 am
SJO
- BOI
1 stop16h 05m
United Airlines
Deal found 6/10![United Airlines logo]()
$661
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:00 am
BOI
- SJO
2 stops27h 11m
United Airlines
Sun 7/266:40 am
SJO
- BOI
2 stops39h 25m
United Airlines
Deal found 6/10![United Airlines logo]()
$678
This Priceline deal was found by Cheapflights users on 6/12. 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 7/276:51 pm
BOI
- SJO
2 stops16h 39m
Multiple Airlines
Sun 8/21:06 am
SJO
- BOI
2 stops22h 58m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$680
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 June 14, 2026.
Search for one-way flight options from Boise to Costa Rica. Find affordable one-way fares based on user searches. Data last updated June 14, 2026.
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:26 am
BOI
- SJO
2 stops15h 49m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$211
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:50 pm
BOI
- SJO
1 stop12h 25m
United Airlines
Deal found 6/10![United Airlines logo]()
$214
This Alaska Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:17 pm
BOI
- LIR
2 stops52h 07m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 6/11. 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 10/1511:30 pm
BOI
- LIR
1 stop12h 30m
Delta
Deal found 6/11![Delta logo]()
$407
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 June 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $442 (oojo) |
One-way from | $211 (oojo) |
Popular in | December |
Cheapest in | January |
Average price | $661 |
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 June 14, 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
Tue 8/4
8:03 am-11:15 pm
2 stops15h 12m
San José Juan Santamaria Intl
Wed 8/12
9:40 am-10:12 am
2 stops24h 32m
$442
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Thu 12/3
8:18 am-11:15 pm
2 stops13h 57m
San José Juan Santamaria Intl
Thu 12/10
5:45 am-10:55 pm
2 stops18h 10m
$478
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Thu 12/3
8:18 am-11:15 pm
2 stops13h 57m
San José Juan Santamaria Intl
Tue 12/8
12:40 pm-1:44 pm
3 stops26h 04m
$529
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Thu 12/3
11:45 am-8:39 pm
2 stops31h 54m
San José Juan Santamaria Intl
Tue 12/8
9:40 am-9:15 pm
1 stop12h 35m
$533
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sun 9/20
7:05 pm-7:15 am
1 stop12h 10m
San José Juan Santamaria Intl
Mon 9/28
8:45 am-11:59 pm
1 stop15h 14m
$559
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Sun 9/20
11:35 pm-11:54 am
1 stop12h 19m
San José Juan Santamaria Intl
Mon 9/28
1:25 pm-2:44 pm
2 stops25h 19m
$563
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Thu 12/3
8:18 am-6:25 pm
1 stop9h 07m
Liberia
Thu 12/10
7:35 pm-1:44 pm
1 stop19h 09m
$575
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Tue 7/7
7:00 am-10:11 am
2 stops27h 11m
San José Juan Santamaria Intl
Mon 7/13
8:45 am-9:40 pm
1 stop12h 55m
$595
Quickest round-trip
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Thu 12/3
7:00 am-4:08 pm
1 stop8h 08m
Liberia
Thu 12/10
12:50 pm-9:16 pm
1 stop9h 26m
$600
BoiseLiberia
BOI - LIR
BOILIR
Boise Air Term. Gowen Fld
Sat 11/7
2:06 pm-12:16 pm
2 stops21h 10m
Liberia
Sat 11/14
1:40 pm-12:38 pm
2 stops23h 58m
$605
Showing 1-10 of 20 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 $141). Flying from Boise to Costa Rica in June is currently the most expensive (average of $440). 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 54 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 June 14, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, 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.
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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.
Search flights from Boise to Costa Rica by cabin class
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 June 14, 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 June 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$815 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$315 | Average$540 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$376 | Average$618 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$477 | Average$698 | FlexibilityNo cancel fee | On-time63% |