$239+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SJO
Oct 10 — Oct 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boise to Costa Rica
Cheapest
Best
Last-minute
One-way
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 September 10, 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 September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/246:50 pm -
2 stops15h 35m
Sat 10/318:40 am -
1 stop12h 35m
Deal found 9/9![United Airlines logo]()
$520
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:29 pm -
2 stops20h 31m
Mon 10/263:01 pm -
2 stops22h 50m
Deal found 9/9![American Airlines logo]()
$525
This American Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:03 pm -
2 stops22h 43m
Sun 11/82:01 pm -
2 stops22h 24m
Deal found 9/7![American Airlines logo]()
$530
This American Airlines deal was found by Cheapflights users on 9/5. 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 -
2 stops21h 20m
Tue 11/173:54 pm -
2 stops22h 57m
Deal found 9/5![American Airlines logo]()
$535
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/202:02 pm -
2 stops23h 16m
Tue 10/272:44 pm -
2 stops26h 15m
Deal found 9/6![American Airlines logo]()
$563
This American Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:41 pm -
2 stops21h 19m
Tue 10/133:01 pm -
2 stops20h 23m
Deal found 9/8![American Airlines logo]()
$570
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/106:15 am -
2 stops13h 22m
Thu 9/178:45 am -
1 stop10h 34m
Deal found 9/9![United Airlines logo]()
$575
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/297:10 pm -
2 stops20h 00m
Wed 11/412:50 pm -
1 stop11h 09m
Deal found 9/6![United Airlines logo]()
$588
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/292:02 pm -
2 stops23h 41m
Wed 11/43:35 pm -
2 stops22h 02m
Deal found 9/6![American Airlines logo]()
$593
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/212:02 pm -
2 stops23h 41m
Wed 10/282:44 pm -
2 stops23h 07m
Deal found 9/5![American Airlines logo]()
$598
This American Airlines deal was found by Cheapflights users on 9/6. 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 11/102:41 pm -
2 stops22h 36m
Mon 11/163:35 pm -
2 stops22h 02m
Deal found 9/6![American Airlines logo]()
$613
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:20 am -
2 stops15h 55m
Thu 10/155:45 am -
2 stops17h 12m
Deal found 9/9![Multiple Airlines logo]()
$617
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 September 10, 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 September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/297:10 pm -
1 stop12h 22m
Wed 11/49:40 am -
1 stop12h 35m
Deal found 9/6![United Airlines logo]()
$520
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:41 pm -
1 stop23h 19m
Mon 10/261:00 pm -
1 stop22h 24m
Deal found 9/9![American Airlines logo]()
$542
This Priceline deal was found by Cheapflights users on 9/9. 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.
Tue 1/195:58 pm -
2 stops25h 33m
Mon 1/258:33 am -
1 stop15h 17m
Deal found 9/9![Alaska Airlines logo]()
$590
This oojo deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/126:51 pm -
2 stops27h 24m
Sat 2/2012:40 pm -
3 stops26h 04m
Deal found 9/8![Multiple Airlines logo]()
$712
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/118:20 pm -
2 stops16h 25m
Sat 2/2012:30 pm -
1 stop10h 15m
Deal found 9/8![Southwest logo]()
$721
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/288:30 am -
2 stops21h 35m
Fri 1/87:05 am -
2 stops17h 50m
Deal found 9/6![Delta logo]()
$811
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/292:02 pm -
2 stops23h 41m
Wed 11/43:35 pm -
2 stops22h 02m
Deal found 9/6![American Airlines logo]()
$593
This United Airlines deal was found by Cheapflights users on 9/6. 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 1/194:05 pm -
2 stops19h 51m
Mon 1/258:35 am -
2 stops14h 00m
Deal found 9/6![United Airlines logo]()
$594
This Booking.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/156:31 pm -
1 stop25h 00m
Fri 1/298:33 am -
1 stop30h 58m
Deal found 9/8![Alaska Airlines logo]()
$603
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:10 pm -
2 stops17h 12m
Thu 11/198:45 am -
2 stops15h 14m
Deal found 9/8![United Airlines logo]()
$664
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 1/158:24 pm -
2 stops23h 06m
Sun 1/248:33 am -
1 stop30h 58m
Deal found 9/9![Alaska Airlines logo]()
$682
This American Airlines deal was found by Cheapflights users on 9/5. 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 1/131:35 pm -
1 stop23h 22m
Sun 1/246:30 am -
1 stop14h 29m
Deal found 9/5![American Airlines logo]()
$796
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:24 pm -
3 stops25h 13m
Sat 12/124:56 pm -
2 stops19h 13m
Deal found 9/8![United Airlines logo]()
$743
This Delta deal was found by Cheapflights users on 9/6. 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 1/311:52 pm -
1 stop11h 53m
Sat 1/163:55 pm -
2 stops23h 27m
Deal found 9/6![Delta logo]()
$938
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 1/146:37 am -
2 stops15h 48m
Sat 1/231:23 am -
1 stop14h 08m
Deal found 9/5![Alaska Airlines logo]()
$810
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/82:51 pm -
1 stop16h 24m
Thu 10/157:55 am -
2 stops25h 39m
Deal found 9/9![United Airlines logo]()
$792
Last-minute flights from Boise to Costa RicaDiscover last-minute flight deals from Boise to Costa Rica. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Costa Rica. Data last updated September 10, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/106:15 am -
2 stops13h 22m
Thu 9/178:45 am -
1 stop10h 34m
Deal found 9/9![United Airlines logo]()
$575
This American Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/62:41 pm -
2 stops21h 19m
Tue 10/133:01 pm -
2 stops20h 23m
Deal found 9/8![American Airlines logo]()
$570
This Expedia deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:20 am -
2 stops15h 55m
Tue 10/135:45 am -
2 stops17h 12m
Deal found 9/8![Multiple Airlines logo]()
$637
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:08 pm -
2 stops23h 52m
Wed 10/141:25 pm -
2 stops20h 29m
Deal found 9/9![Delta logo]()
$662
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Thu 10/87:20 am -
2 stops15h 55m
Thu 10/155:45 am -
2 stops17h 12m
Deal found 9/9![Multiple Airlines logo]()
$617
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/202:02 pm -
2 stops23h 16m
Tue 10/272:44 pm -
2 stops26h 15m
Deal found 9/6![American Airlines logo]()
$563
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:29 pm -
2 stops20h 31m
Mon 10/263:01 pm -
2 stops22h 50m
Deal found 9/9![American Airlines logo]()
$525
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/212:02 pm -
2 stops23h 41m
Wed 10/282:44 pm -
2 stops23h 07m
Deal found 9/5![American Airlines logo]()
$598
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:50 pm -
1 stop12h 25m
Fri 10/308:40 am -
1 stop14h 53m
Deal found 9/8![United Airlines logo]()
$658
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/246:50 pm -
2 stops15h 35m
Sat 10/318:40 am -
1 stop12h 35m
Deal found 9/9![United Airlines logo]()
$520
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/297:10 pm -
2 stops20h 00m
Wed 11/412:50 pm -
1 stop11h 09m
Deal found 9/6![United Airlines logo]()
$588
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/292:02 pm -
2 stops23h 41m
Wed 11/43:35 pm -
2 stops22h 02m
Deal found 9/6![American Airlines logo]()
$593
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 September 10, 2026.
Search for one-way flight options from Boise to Costa Rica. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 12/74:24 pm -
1 stop15h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 9/5. 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 11/132:41 pm -
2 stops21h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![American Airlines logo]()
$243
This Priceline deal was found by Cheapflights users on 9/9. 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.
Mon 1/186:37 am -
2 stops12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Alaska Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 9/5. 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 11/1311:10 pm -
1 stop13h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Delta logo]()
$258
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 1/185:26 pm -
2 stops18h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 12/52:48 pm -
2 stops21h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Fri 11/135:43 am -
3 stops34h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/187:00 am -
3 stops22h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$482
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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $520 (United Airlines) |
One-way from | $239 (United Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $474 |
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 September 10, 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
Fri 11/13
2:41 pm-1:01 pm
2 stops21h 20m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$243
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Mon 12/7
4:24 pm-1:22 pm
2 stops19h 58m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$244
BoiseLiberia
BOI Boise Air Term. Gowen Fld - LIR Liberia
BOILIR
Boise Air Term. Gowen Fld
Mon 1/18
7:25 am-8:31 pm
1 stop12h 06m
Liberia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$249
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Fri 11/13
11:10 pm-1:12 pm
1 stop13h 02m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$258
Quickest round-trip
BoiseLiberia
BOI Boise Air Term. Gowen Fld - LIR Liberia
BOILIR
Boise Air Term. Gowen Fld
Mon 1/18
6:25 am-4:08 pm
1 stop8h 43m
Liberia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$288
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Sat 12/5
2:48 pm-1:22 pm
2 stops21h 34m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$299
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Fri 11/13
5:43 am-5:08 pm
3 stops34h 25m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$381
BoiseLiberia
BOI Boise Air Term. Gowen Fld - LIR Liberia
BOILIR
Boise Air Term. Gowen Fld
Mon 1/18
7:00 am-6:50 am
3 stops22h 50m
Liberia
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$482
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Thu 10/29
7:10 pm-7:32 am
1 stop12h 22m
San José Juan Santamaria Intl
Wed 11/4
9:40 am-9:15 pm
1 stop12h 35m
$520
BoiseSan José
BOI Boise Air Term. Gowen Fld - SJO San José Juan Santamaria Intl
BOISJO
Boise Air Term. Gowen Fld
Wed 10/21
2:41 pm-2:00 pm
1 stop23h 19m
San José Juan Santamaria Intl
Mon 10/26
1:00 pm-11:24 am
1 stop22h 24m
$542
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 $441). Flying from Boise to Costa Rica in December is currently the most expensive (average of $1,278). 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 8 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 September 10, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, 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.
Comfort
8.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Comfort
8.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
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 September 10, 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 September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$279 | Average$523 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$317 | Average$555 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$441 | Average$557 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$454 | Average$617 | FlexibilityNo cancel fee | On-time63% |