$136+ Cheap flights from Boston (BOS) 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SJO
Apr 22 — Apr 291
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Costa Rica with Cheapflights
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Cheapest flights from Boston to Costa RicaExplore the most affordable flight options available from Boston to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
Explore the most affordable flight options available from Boston to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
This Expedia deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:30 am
BOS
- SJO
1 stop8h 42m
Multiple Airlines
Thu 4/161:45 pm
SJO
- BOS
1 stop8h 07m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$280
This FlightHub deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/184:50 pm
BOS
- SJO
1 stop8h 50m
Multiple Airlines
Tue 6/97:48 pm
SJO
- BOS
1 stop12h 57m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$298
This Super.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Wed 6/35:05 am
SJO
- BOS
1 stop7h 45m
Avianca
Deal found 3/20![Avianca logo]()
$306
This Super.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Sun 5/105:05 am
SJO
- BOS
1 stop7h 45m
Avianca
Deal found 3/20![Avianca logo]()
$307
This Copa Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/314:00 pm
BOS
- SJO
1 stop19h 06m
Copa Airlines
Thu 6/410:05 am
SJO
- BOS
1 stop11h 03m
Copa Airlines
Deal found 3/20![Copa Airlines logo]()
$308
This Avianca deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Sun 5/177:45 pm
SJO
- BOS
1 stop17h 05m
Avianca
Deal found 3/20![Avianca logo]()
$309
This Avianca deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Fri 5/155:05 am
SJO
- BOS
1 stop7h 45m
Avianca
Deal found 3/22![Avianca logo]()
$310
This Orbitz deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:30 am
BOS
- SJO
1 stop8h 42m
Multiple Airlines
Tue 4/147:48 pm
SJO
- BOS
1 stop12h 57m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$313
This Copa Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/304:05 pm
BOS
- SJO
1 stop19h 00m
Copa Airlines
Tue 4/74:09 am
SJO
- BOS
1 stop17h 00m
Copa Airlines
Deal found 3/19![Copa Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:55 am
BOS
- SJO
1 stop7h 38m
Multiple Airlines
Tue 5/127:48 pm
SJO
- BOS
1 stop12h 57m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$316
This Avianca deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Thu 5/77:45 pm
SJO
- BOS
1 stop17h 05m
Avianca
Deal found 3/20![Avianca logo]()
$319
This JetBlue deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:46 pm
BOS
- SJO
1 stop14h 07m
JetBlue
Sat 10/39:00 am
SJO
- BOS
1 stop9h 00m
JetBlue
Deal found 3/20![JetBlue logo]()
$320
Best flights from Boston to Costa RicaDiscover carefully curated flight deals from Boston to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
Discover carefully curated flight deals from Boston to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
This Copa Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:52 am
BOS
- SJO
1 stop12h 09m
Copa Airlines
Tue 5/194:10 am
SJO
- BOS
1 stop16h 58m
Copa Airlines
Deal found 3/17![Copa Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BOS
- SJO
1 stop7h 38m
United Airlines
Wed 5/67:55 am
SJO
- BOS
2 stops12h 19m
United Airlines
Deal found 3/18![United Airlines logo]()
$377
This American Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:30 pm
BOS
- LIR
2 stops18h 40m
American Airlines
Mon 4/202:10 pm
LIR
- BOS
1 stop19h 42m
American Airlines
Deal found 3/22![American Airlines logo]()
$421
This JetBlue deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:20 am
BOS
- LIR
1 stop9h 20m
JetBlue
Wed 5/131:00 pm
LIR
- BOS
1 stop9h 14m
JetBlue
Deal found 3/19![JetBlue logo]()
$511
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/305:35 am
BOS
- LIR
1 stop9h 15m
Delta
Sat 4/412:40 pm
LIR
- BOS
Nonstop5h 21m
Delta
Deal found 3/22![Delta logo]()
$579
This Copa Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/264:00 pm
BOS
- SJO
1 stop19h 06m
Copa Airlines
Tue 6/210:05 am
SJO
- BOS
1 stop11h 03m
Copa Airlines
Deal found 3/22![Copa Airlines logo]()
$308
This Copa Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/244:00 pm
BOS
- SJO
1 stop18h 21m
Copa Airlines
Sun 5/314:10 am
SJO
- BOS
1 stop16h 58m
Copa Airlines
Deal found 3/19![Copa Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:19 pm
BOS
- SJO
1 stop28h 18m
United Airlines
Wed 5/207:55 am
SJO
- BOS
2 stops14h 04m
United Airlines
Deal found 3/20![United Airlines logo]()
$446
This Copa Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/74:00 pm
BOS
- SJO
1 stop17h 12m
Copa Airlines
Sun 8/28:45 am
SJO
- BOS
1 stop12h 25m
Copa Airlines
Deal found 3/17![Copa Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
BOS
- SJO
1 stop7h 38m
United Airlines
Tue 6/1612:30 am
SJO
- BOS
2 stops17h 00m
United Airlines
Deal found 3/18![United Airlines logo]()
$458
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:43 am
BOS
- SJO
1 stop26h 22m
Copa Airlines
Sun 4/195:56 pm
SJO
- BOS
1 stop18h 35m
Copa Airlines
Deal found 3/17![Copa Airlines logo]()
$393
This Cheapflightsfares deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:15 am
BOS
- LIR
Nonstop5h 40m
JetBlue
Mon 4/203:15 pm
LIR
- BOS
Nonstop5h 23m
JetBlue
Deal found 3/22![JetBlue logo]()
$541
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:00 am
BOS
- SJO
1 stop7h 38m
United Airlines
Sun 4/197:55 am
SJO
- BOS
2 stops23h 30m
United Airlines
Deal found 3/17![United Airlines logo]()
$472
This United Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:25 pm
BOS
- SJO
2 stops18h 46m
United Airlines
Sat 5/21:25 pm
SJO
- BOS
2 stops19h 36m
United Airlines
Deal found 3/21![United Airlines logo]()
$524
This Copa Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/223:57 pm
BOS
- SJO
1 stop17h 15m
Copa Airlines
Wed 7/2910:03 am
SJO
- BOS
1 stop11h 07m
Copa Airlines
Deal found 3/19![Copa Airlines logo]()
$496
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/114:28 pm
BOS
- LIR
1 stop21h 25m
United Airlines
Sat 4/183:27 pm
LIR
- BOS
2 stops15h 58m
United Airlines
Deal found 3/19![United Airlines logo]()
$540
This Copa Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/303:57 pm
BOS
- SJO
1 stop7h 50m
Copa Airlines
Thu 8/68:12 am
SJO
- BOS
1 stop12h 58m
Copa Airlines
Deal found 3/19![Copa Airlines logo]()
$533
This United Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:45 am
BOS
- LIR
2 stops10h 40m
United Airlines
Mon 6/83:27 pm
LIR
- BOS
2 stops17h 38m
United Airlines
Deal found 3/21![United Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/113:32 pm
BOS
- LIR
2 stops22h 38m
United Airlines
Wed 5/131:20 pm
LIR
- BOS
2 stops33h 39m
United Airlines
Deal found 3/18![United Airlines logo]()
$549
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:25 am
BOS
- LIR
1 stop9h 00m
United Airlines
Mon 4/63:27 pm
LIR
- BOS
1 stop18h 49m
United Airlines
Deal found 3/20![United Airlines logo]()
$584
Last-minute flights from Boston to Costa RicaDiscover last-minute flight deals from Boston to Costa Rica. Data last updated March 23, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Costa Rica. Data last updated March 23, 2026 and is based on user searches.
This Copa Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/304:05 pm
BOS
- SJO
1 stop19h 00m
Copa Airlines
Tue 4/74:09 am
SJO
- BOS
1 stop17h 00m
Copa Airlines
Deal found 3/19![Copa Airlines logo]()
$314
This Copa Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:05 pm
BOS
- SJO
1 stop18h 15m
Copa Airlines
Fri 4/104:09 am
SJO
- BOS
1 stop17h 00m
Copa Airlines
Deal found 3/20![Copa Airlines logo]()
$328
This Copa Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:46 pm
BOS
- SJO
1 stop17h 22m
Copa Airlines
Mon 4/136:19 pm
SJO
- BOS
1 stop18h 12m
Copa Airlines
Deal found 3/20![Copa Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:46 pm
BOS
- SJO
1 stop17h 22m
Copa Airlines
Wed 4/1510:04 am
SJO
- BOS
1 stop11h 05m
Copa Airlines
Deal found 3/18![Copa Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:46 pm
BOS
- SJO
1 stop17h 22m
Copa Airlines
Tue 4/146:19 pm
SJO
- BOS
1 stop18h 12m
Copa Airlines
Deal found 3/18![Copa Airlines logo]()
$329
This Expedia deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:30 am
BOS
- SJO
1 stop8h 42m
Multiple Airlines
Thu 4/161:45 pm
SJO
- BOS
1 stop8h 07m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$280
This Orbitz deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:30 am
BOS
- SJO
1 stop8h 42m
Multiple Airlines
Tue 4/147:48 pm
SJO
- BOS
1 stop12h 57m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$313
This KAYAK deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:45 am
BOS
- SJO
1 stop8h 11m
JetBlue
Thu 4/161:05 pm
SJO
- BOS
1 stop9h 09m
JetBlue
Deal found 3/21![JetBlue logo]()
$320
This Copa Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:46 pm
BOS
- SJO
1 stop19h 19m
Copa Airlines
Tue 4/286:19 pm
SJO
- BOS
1 stop18h 12m
Copa Airlines
Deal found 3/20![Copa Airlines logo]()
$308
This Avianca deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Mon 5/45:05 am
SJO
- BOS
1 stop7h 45m
Avianca
Deal found 3/21![Avianca logo]()
$309
This Expedia deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:10 am
BOS
- SJO
1 stop8h 20m
Multiple Airlines
Thu 5/712:38 pm
SJO
- BOS
1 stop9h 06m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BOS
- SJO
2 stops9h 08m
American Airlines
Thu 5/712:35 pm
SJO
- BOS
1 stop19h 26m
American Airlines
Deal found 3/19![American Airlines logo]()
$332
One-way flights from Boston to Costa RicaSearch for one-way flight options from Boston to Costa Rica. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
Search for one-way flight options from Boston to Costa Rica. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
This Avianca deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/184:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Deal found 3/17![Avianca logo]()
$136
This CheapOair deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:45 am
BOS
- SJO
1 stop7h 29m
Spirit Airlines
Deal found 3/21![Spirit Airlines logo]()
$137
This Cheapflightsfares deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:16 pm
BOS
- SJO
1 stop17h 17m
Spirit Airlines
Deal found 3/22![Spirit Airlines logo]()
$138
This American Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:27 am
BOS
- SJO
1 stop8h 08m
American Airlines
Deal found 3/20![American Airlines logo]()
$139
This Trip.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Deal found 3/20![Avianca logo]()
$145
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1612:44 pm
BOS
- SJO
1 stop8h 23m
American Airlines
Deal found 3/18![American Airlines logo]()
$149
This Ovago deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/55:45 am
BOS
- SJO
1 stop8h 11m
JetBlue
Deal found 3/20![JetBlue logo]()
$151
This Cheapflightsfares deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:35 am
BOS
- SJO
1 stop7h 20m
JetBlue
Deal found 3/22![JetBlue logo]()
$159
This Avianca deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/174:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Deal found 3/21![Avianca logo]()
$160
This Air Canada deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:15 am
BOS
- LIR
1 stop9h 25m
Air Canada
Deal found 3/20![Air Canada logo]()
$175
This Air Canada deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/303:35 pm
BOS
- LIR
1 stop22h 55m
Air Canada
Deal found 3/21![Air Canada logo]()
$183
This KAYAK deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/229:52 am
BOS
- LIR
Nonstop5h 43m
JetBlue
Deal found 3/20![JetBlue logo]()
$188
Find flight deals from Boston to Costa Rica
Keep the following information in mind while searching for Boston to Costa Rica flight deals. Data was last updated March 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $280 (Expedia) |
One-way from | $136 (Avianca) |
Popular in | December |
Cheapest in | October |
Average price | $436 |
Good round-trip deal | $381 or less |
Good one-way deal | $236 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston 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 March 23, 2026.
Use the filters below to find and compare flights from Boston to Costa Rica that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Tue 5/12
8:52 am-7:01 pm
1 stop12h 09m
San José Juan Santamaria Intl
Tue 5/19
4:10 am-11:08 pm
1 stop16h 58m
$308
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Tue 5/26
4:00 pm-9:06 am
1 stop19h 06m
San José Juan Santamaria Intl
Tue 6/2
10:05 am-11:08 pm
1 stop11h 03m
$308
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Sun 5/24
4:00 pm-8:21 am
1 stop18h 21m
San José Juan Santamaria Intl
Sun 5/31
4:10 am-11:08 pm
1 stop16h 58m
$325
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Tue 4/28
6:00 am-11:38 am
1 stop7h 38m
San José Juan Santamaria Intl
Wed 5/6
7:55 am-10:14 pm
2 stops12h 19m
$377
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Sun 6/7
4:00 pm-7:12 am
1 stop17h 12m
San José Juan Santamaria Intl
Sun 8/2
8:45 am-11:10 pm
1 stop12h 25m
$384
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Fri 4/10
8:43 am-9:05 am
1 stop26h 22m
San José Juan Santamaria Intl
Sun 4/19
5:56 pm-2:31 pm
1 stop18h 35m
$393
BostonLiberia
BOS - LIR
BOSLIR
Boston Logan Intl
Mon 4/13
8:30 pm-1:10 pm
2 stops18h 40m
Liberia
Mon 4/20
2:10 pm-11:52 am
1 stop19h 42m
$421
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Wed 5/6
5:19 pm-7:37 pm
1 stop28h 18m
San José Juan Santamaria Intl
Wed 5/20
7:55 am-11:59 pm
2 stops14h 04m
$446
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Wed 6/3
6:00 am-11:38 am
1 stop7h 38m
San José Juan Santamaria Intl
Tue 6/16
12:30 am-7:30 pm
2 stops17h 00m
$458
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Fri 4/10
6:00 am-11:38 am
1 stop7h 38m
San José Juan Santamaria Intl
Sun 4/19
7:55 am-9:25 am
2 stops23h 30m
$472
Showing 1-10 of 41 resultsSorted by cheapest first
Best time to book a flight from Boston to Costa Rica
Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Boston with our price prediction graph.
BOS-SJO
BOS-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 Boston to Costa Rica
BOS-CR0
BOS-SJO
BOS-LIR
What is the cheapest month to book a flight from Boston to Costa Rica?
Currently, October is the cheapest month in which you can book a flight from Boston to Costa Rica (average of $150). Flying from Boston to Costa Rica in July is currently the most expensive (average of $304). 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.
What is the cheapest time of day to fly from BOS to CR?
Find hourly flight availability from Boston to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 23, 2026.
When flying from Boston to Costa Rica, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 March 23, 2026.
Peruse reviews from past customers who have flown with Delta,Copa Airlines, andJetBlue from Boston to Costa Rica to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Boarding
8.1
Comfort
7.9
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Boston 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 Boston 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 Boston to Costa Rica by cabin class
Find flights from Boston to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Costa Rica flights
Browse other Boston and Costa Rica flight options. Last updated on March 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 10 airlines flying from Boston to Costa Rica
Discover the top 10 airlines that operate flights from Boston 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 March 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$509 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$145 | Average$383 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$159 | Average$505 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$159 | Average$442 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$181 | Average$393 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$236 | Average$503 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$251 | Average$500 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$289 | Average$527 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$302 | Average$471 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$351 | Average$673 | FlexibilityNo cancel fee | On-time62% |