$166+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SJO
Jul 23 — Jul 301
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 June 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 June 23, 2026.
This Copa Airlines deal was found by Cheapflights users on 6/22. 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.
Thu 7/23:57 pm
BOS
- SJO
1 stop17h 15m
Copa Airlines
Thu 7/95:55 pm
SJO
- BOS
1 stop27h 15m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Tue 6/231:37 pm
BOS
- SJO
1 stop11h 02m
United Airlines
Sun 6/2812:30 am
SJO
- BOS
1 stop9h 58m
United Airlines
Deal found 6/19![United Airlines logo]()
$366
This Copa Airlines deal was found by Cheapflights users on 6/22. 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 6/238:52 am
BOS
- SJO
1 stop24h 17m
Copa Airlines
Sat 6/275:57 pm
SJO
- BOS
1 stop18h 47m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$369
This American Airlines deal was found by Cheapflights users on 6/22. 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.
Wed 10/147:19 pm
BOS
- SJO
2 stops17h 46m
American Airlines
Wed 10/212:45 pm
SJO
- BOS
1 stop7h 49m
American Airlines
Deal found 6/22![American Airlines logo]()
$371
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:44 am
BOS
- SJO
1 stop7h 55m
American Airlines
Mon 11/161:23 pm
SJO
- BOS
1 stop20h 43m
American Airlines
Deal found 6/23![American Airlines logo]()
$374
This Avianca deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Sun 9/135:05 am
SJO
- BOS
1 stop7h 45m
Avianca
Deal found 6/23![Avianca logo]()
$375
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:09 pm
BOS
- SJO
1 stop20h 30m
American Airlines
Thu 11/123:11 pm
SJO
- BOS
1 stop8h 35m
American Airlines
Deal found 6/23![American Airlines logo]()
$376
This Copa Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:55 pm
BOS
- SJO
1 stop17h 15m
Copa Airlines
Thu 9/174:08 am
SJO
- BOS
1 stop16h 54m
Copa Airlines
Deal found 6/23![Copa Airlines logo]()
$379
This Copa Airlines deal was found by Cheapflights users on 6/22. 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.
Thu 9/243:55 pm
BOS
- SJO
1 stop21h 03m
Copa Airlines
Sun 9/276:17 pm
SJO
- BOS
1 stop26h 45m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$380
This American Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:00 am
BOS
- SJO
1 stop16h 53m
American Airlines
Sun 8/231:29 pm
SJO
- BOS
1 stop19h 06m
American Airlines
Deal found 6/21![American Airlines logo]()
$381
This Avianca deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Sat 10/177:45 pm
SJO
- BOS
1 stop17h 05m
Avianca
Deal found 6/23![Avianca logo]()
$385
This Air Canada deal was found by Cheapflights users on 6/21. 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.
Sun 11/227:40 pm
BOS
- LIR
2 stops43h 00m
Air Canada
Mon 11/302:55 pm
LIR
- BOS
1 stop18h 02m
Air Canada
Deal found 6/21![Air Canada logo]()
$450
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 June 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 June 23, 2026.
This Copa Airlines deal was found by Cheapflights users on 6/22. 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 8/188:45 am
BOS
- SJO
1 stop24h 25m
Copa Airlines
Fri 8/2810:03 am
SJO
- BOS
1 stop11h 07m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:25 am
BOS
- LIR
1 stop9h 00m
United Airlines
Mon 7/133:27 pm
LIR
- BOS
2 stops16h 02m
United Airlines
Deal found 6/22![United Airlines logo]()
$461
This Southwest deal was found by Cheapflights users on 6/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:50 am
BOS
- SJO
2 stops14h 50m
Southwest
Mon 9/289:00 am
SJO
- BOS
2 stops11h 10m
Southwest
Deal found 6/21![Southwest logo]()
$483
This Copa Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/268:45 am
BOS
- SJO
1 stop24h 27m
Copa Airlines
Fri 7/314:08 am
SJO
- BOS
1 stop8h 26m
Copa Airlines
Deal found 6/23![Copa Airlines logo]()
$445
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Thu 7/25:47 am
BOS
- LIR
1 stop8h 23m
United Airlines
Tue 7/73:27 pm
LIR
- BOS
2 stops16h 02m
United Airlines
Deal found 6/19![United Airlines logo]()
$490
This Copa Airlines deal was found by Cheapflights users on 6/20. 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 8/168:45 am
BOS
- SJO
1 stop24h 25m
Copa Airlines
Tue 8/2510:03 am
SJO
- BOS
1 stop26h 31m
Copa Airlines
Deal found 6/20![Copa Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am
BOS
- SJO
2 stops15h 37m
United Airlines
Sat 10/101:25 pm
SJO
- BOS
2 stops18h 19m
United Airlines
Deal found 6/23![United Airlines logo]()
$491
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Fri 10/2312:45 pm
BOS
- SJO
2 stops25h 36m
United Airlines
Sun 11/12:25 pm
SJO
- BOS
2 stops18h 58m
United Airlines
Deal found 6/19![United Airlines logo]()
$491
This Copa Airlines deal was found by Cheapflights users on 6/22. 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.
Thu 10/88:47 am
BOS
- SJO
1 stop25h 32m
Copa Airlines
Sat 10/176:17 pm
SJO
- BOS
1 stop18h 22m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:25 am
BOS
- SJO
2 stops12h 12m
United Airlines
Thu 9/101:25 pm
SJO
- BOS
2 stops19h 29m
United Airlines
Deal found 6/23![United Airlines logo]()
$537
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:57 pm
BOS
- SJO
2 stops19h 28m
United Airlines
Tue 11/1711:28 pm
SJO
- BOS
2 stops24h 38m
United Airlines
Deal found 6/21![United Airlines logo]()
$537
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:00 am
BOS
- SJO
1 stop7h 38m
United Airlines
Sun 9/67:55 am
SJO
- BOS
2 stops24h 23m
United Airlines
Deal found 6/23![United Airlines logo]()
$537
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:35 pm
BOS
- SJO
1 stop18h 36m
United Airlines
Fri 7/1712:30 am
SJO
- BOS
2 stops19h 26m
United Airlines
Deal found 6/23![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 6/21. 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 8/145:38 pm
BOS
- LIR
1 stop20h 32m
United Airlines
Fri 8/281:20 pm
LIR
- BOS
2 stops21h 30m
United Airlines
Deal found 6/21![United Airlines logo]()
$568
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/168:15 am
BOS
- LIR
2 stops27h 35m
United Airlines
Mon 7/201:20 pm
LIR
- BOS
2 stops19h 45m
United Airlines
Deal found 6/22![United Airlines logo]()
$610
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Fri 7/178:15 pm
BOS
- LIR
1 stop17h 38m
United Airlines
Fri 7/244:30 pm
LIR
- BOS
1 stop16h 46m
United Airlines
Deal found 6/19![United Airlines logo]()
$685
This United Airlines deal was found by Cheapflights users on 6/21. 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 7/176:43 pm
BOS
- LIR
1 stop19h 10m
United Airlines
Wed 7/223:27 pm
LIR
- BOS
2 stops17h 38m
United Airlines
Deal found 6/21![United Airlines logo]()
$716
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/266:43 pm
BOS
- LIR
2 stops21h 42m
United Airlines
Sat 7/41:20 pm
LIR
- BOS
2 stops19h 00m
United Airlines
Deal found 6/22![United Airlines logo]()
$749
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:27 pm
BOS
- LIR
2 stops16h 23m
United Airlines
Sat 7/254:30 pm
LIR
- BOS
1 stop15h 21m
United Airlines
Deal found 6/22![United Airlines logo]()
$765
This United Airlines deal was found by Cheapflights users on 6/20. 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.
Sun 7/196:05 am
BOS
- LIR
1 stop30h 39m
United Airlines
Sun 7/264:30 pm
LIR
- BOS
1 stop27h 23m
United Airlines
Deal found 6/20![United Airlines logo]()
$804
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:00 am
BOS
- LIR
3 stops32h 10m
United Airlines
Fri 8/211:20 pm
LIR
- BOS
2 stops18h 16m
United Airlines
Deal found 6/22![United Airlines logo]()
$862
Last-minute flights from Boston to Costa RicaDiscover last-minute flight deals from Boston to Costa Rica. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Costa Rica. Data last updated June 23, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Tue 6/2312:30 pm
BOS
- SJO
2 stops12h 09m
United Airlines
Sun 6/2812:30 am
SJO
- BOS
1 stop9h 58m
United Airlines
Deal found 6/19![United Airlines logo]()
$366
This Copa Airlines deal was found by Cheapflights users on 6/22. 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 6/238:52 am
BOS
- SJO
1 stop24h 17m
Copa Airlines
Sat 6/275:57 pm
SJO
- BOS
1 stop18h 47m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/293:54 pm
BOS
- SJO
1 stop8h 45m
United Airlines
Mon 7/67:15 am
SJO
- BOS
1 stop12h 38m
United Airlines
Deal found 6/22![United Airlines logo]()
$391
This CheapOair deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:20 am
BOS
- SJO
1 stop7h 36m
JetBlue
Mon 7/132:02 pm
SJO
- BOS
1 stop8h 45m
JetBlue
Deal found 6/23![JetBlue logo]()
$399
This Copa Airlines deal was found by Cheapflights users on 6/22. 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.
Mon 6/294:00 pm
BOS
- SJO
1 stop17h 09m
Copa Airlines
Mon 7/136:17 pm
SJO
- BOS
1 stop26h 53m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$400
This Copa Airlines deal was found by Cheapflights users on 6/22. 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.
Thu 7/23:57 pm
BOS
- SJO
1 stop17h 15m
Copa Airlines
Thu 7/95:55 pm
SJO
- BOS
1 stop27h 15m
Copa Airlines
Deal found 6/22![Copa Airlines logo]()
$364
This Copa Airlines deal was found by Cheapflights users on 6/19. 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.
Fri 7/173:57 pm
BOS
- SJO
1 stop17h 29m
Copa Airlines
Mon 7/206:17 pm
SJO
- BOS
1 stop26h 53m
Copa Airlines
Deal found 6/19![Copa Airlines logo]()
$389
This Trip.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:45 am
BOS
- SJO
1 stop24h 27m
Copa Airlines
Thu 7/305:45 am
SJO
- BOS
1 stop30h 49m
Copa Airlines
Deal found 6/23![Copa Airlines logo]()
$397
This Copa Airlines deal was found by Cheapflights users on 6/19. 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.
Tue 7/288:45 am
BOS
- SJO
1 stop25h 36m
Copa Airlines
Tue 8/46:17 pm
SJO
- BOS
1 stop18h 17m
Copa Airlines
Deal found 6/19![Copa Airlines logo]()
$394
This Copa Airlines deal was found by Cheapflights users on 6/19. 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.
Tue 7/283:57 pm
BOS
- SJO
1 stop19h 09m
Copa Airlines
Thu 8/64:08 am
SJO
- BOS
1 stop8h 26m
Copa Airlines
Deal found 6/19![Copa Airlines logo]()
$404
This Copa Airlines deal was found by Cheapflights users on 6/20. 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 7/293:57 pm
BOS
- SJO
1 stop19h 09m
Copa Airlines
Mon 8/105:55 pm
SJO
- BOS
1 stop18h 39m
Copa Airlines
Deal found 6/20![Copa Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Wed 7/293:57 pm
BOS
- SJO
1 stop18h 24m
Copa Airlines
Wed 8/56:17 pm
SJO
- BOS
1 stop18h 17m
Copa Airlines
Deal found 6/21![Copa Airlines logo]()
$395
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 June 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 June 23, 2026.
This Super.com deal was found by Cheapflights users on 6/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:10 am
BOS
- SJO
1 stop9h 47m
JetBlue
Deal found 6/22![JetBlue logo]()
$166
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:26 am
BOS
- SJO
2 stops14h 27m
American Airlines
Deal found 6/23![American Airlines logo]()
$176
This Air Canada deal was found by Cheapflights users on 6/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:35 pm
BOS
- SJO
1 stop30h 45m
Air Canada
Deal found 6/22![Air Canada logo]()
$190
This Air Canada deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:40 am
BOS
- SJO
2 stops13h 20m
Air Canada
Deal found 6/23![Air Canada logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:05 am
BOS
- SJO
1 stop30h 06m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$207
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:21 am
BOS
- SJO
1 stop9h 41m
American Airlines
Deal found 6/23![American Airlines logo]()
$208
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:30 am
BOS
- LIR
1 stop8h 30m
Delta
Deal found 6/23![Delta logo]()
$212
This American Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am
BOS
- SJO
2 stops8h 59m
American Airlines
Deal found 6/22![American Airlines logo]()
$213
This Faresmojo deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/291:37 pm
BOS
- SJO
1 stop11h 02m
JetBlue
Deal found 6/23![JetBlue logo]()
$217
This American Airlines deal was found by Cheapflights users on 6/22. 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.
Sat 7/117:41 pm
BOS
- LIR
2 stops17h 41m
American Airlines
Deal found 6/22![American Airlines logo]()
$218
This Air Canada deal was found by Cheapflights users on 6/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:45 am
BOS
- SJO
1 stop16h 35m
Air Canada
Deal found 6/22![Air Canada logo]()
$220
This American Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:45 pm
BOS
- LIR
2 stops19h 44m
American Airlines
Deal found 6/21![American Airlines logo]()
$223
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 June 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $364 (Copa Airlines) |
One-way from | $166 (Super.com) |
Popular in | December |
Cheapest in | October |
Average price | $561 |
Good round-trip deal | $560 or less |
Good one-way deal | $587 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 June 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 8/18
8:45 am-7:10 am
1 stop24h 25m
San José Juan Santamaria Intl
Fri 8/28
10:03 am-11:10 pm
1 stop11h 07m
$429
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Sun 7/26
8:45 am-7:12 am
1 stop24h 27m
San José Juan Santamaria Intl
Fri 7/31
4:08 am-2:34 pm
1 stop8h 26m
$445
BostonLiberia
BOS - LIR
BOSLIR
Boston Logan Intl
Thu 7/9
7:25 am-2:25 pm
1 stop9h 00m
Liberia
Mon 7/13
3:27 pm-9:29 am
2 stops16h 02m
$461
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Mon 9/14
5:50 am-6:40 pm
2 stops14h 50m
San José Juan Santamaria Intl
Mon 9/28
9:00 am-10:10 pm
2 stops11h 10m
$483
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Sun 8/16
8:45 am-7:10 am
1 stop24h 25m
San José Juan Santamaria Intl
Tue 8/25
10:03 am-2:34 pm
1 stop26h 31m
$485
Quickest round-trip
BostonLiberia
BOS - LIR
BOSLIR
Boston Logan Intl
Thu 7/2
5:47 am-12:10 pm
1 stop8h 23m
Liberia
Tue 7/7
3:27 pm-9:29 am
2 stops16h 02m
$490
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Tue 9/29
6:00 am-7:37 pm
2 stops15h 37m
San José Juan Santamaria Intl
Sat 10/10
1:25 pm-9:44 am
2 stops18h 19m
$491
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Fri 10/23
12:45 pm-12:21 pm
2 stops25h 36m
San José Juan Santamaria Intl
Sun 11/1
2:25 pm-10:23 am
2 stops18h 58m
$491
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Thu 10/8
8:47 am-8:19 am
1 stop25h 32m
San José Juan Santamaria Intl
Sat 10/17
6:17 pm-2:39 pm
1 stop18h 22m
$509
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Wed 9/2
9:25 am-7:37 pm
2 stops12h 12m
San José Juan Santamaria Intl
Thu 9/10
1:25 pm-10:54 am
2 stops19h 29m
$537
Showing 1-10 of 38 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, September is the cheapest month in which you can book a flight from Boston to Costa Rica (average of $73). Flying from Boston to Costa Rica in December is currently the most expensive (average of $1,084). 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 Boston to Costa Rica?
The price you pay for your flight from Boston to Costa Rica may vary depending on when you book. For the best chance of a lower fare, look to book 15 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 23, 2026.
Peruse reviews from past customers who have flown with Delta,Copa Airlines, andUnited Airlines 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.
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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 June 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 June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$523 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$159 | Average$466 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$159 | Average$453 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$178 | Average$381 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$251 | Average$509 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$286 | Average$533 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$316 | Average$556 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$327 | Average$443 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$381 | Average$847 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$470 | Average$719 | FlexibilityNo cancel fee | On-time63% |