$159+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SJO
Sep 21 — Sep 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boston 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 Boston to Costa Rica
Cheapest
Best
Last-minute
One-way
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 August 22, 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 August 22, 2026.
This Kissandfly.com deal was found by Cheapflights users on 8/19. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:00 am -
1 stop9h 18m
Tue 10/132:44 pm -
1 stop8h 15m
Deal found 8/19![British Airways logo]()
$339
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Mon 10/55:00 am -
1 stop10h 18m
Tue 10/132:44 pm -
2 stops16h 02m
Deal found 8/19![American Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Mon 11/98:05 pm -
1 stop16h 39m
Fri 11/135:20 pm -
1 stop13h 23m
Deal found 8/20![United Airlines logo]()
$350
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Sun 10/45:00 am -
1 stop10h 18m
Thu 10/152:44 pm -
1 stop8h 15m
Deal found 8/21![American Airlines logo]()
$351
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:00 am -
1 stop9h 18m
Tue 10/132:44 pm -
1 stop8h 15m
Deal found 8/17![American Airlines logo]()
$352
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 10/56:50 pm -
2 stops20h 28m
Fri 10/162:44 pm -
2 stops19h 34m
Deal found 8/21![American Airlines logo]()
$356
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Sat 10/313:52 pm -
1 stop24h 43m
Thu 11/53:35 pm -
1 stop8h 24m
Deal found 8/21![American Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Sat 10/175:15 pm -
1 stop22h 03m
Thu 10/222:44 pm -
1 stop17h 34m
Deal found 8/21![American Airlines logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Tue 9/158:47 am -
1 stop24h 23m
Tue 9/2210:03 am -
1 stop10h 59m
Deal found 8/17![Copa Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Wed 9/163:55 pm -
1 stop17h 15m
Wed 9/235:55 pm -
1 stop27h 07m
Deal found 8/18![Copa Airlines logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Mon 9/143:55 pm -
1 stop17h 15m
Mon 9/2110:03 am -
1 stop10h 59m
Deal found 8/18![Copa Airlines logo]()
$377
This Copa Airlines deal was found by Cheapflights users on 8/18. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:55 pm -
1 stop18h 24m
Wed 10/214:08 am -
1 stop16h 54m
Deal found 8/18![Copa Airlines logo]()
$379
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 August 22, 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 August 22, 2026.
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 10/59:25 pm -
2 stops17h 53m
Thu 10/152:44 pm -
1 stop8h 15m
Deal found 8/21![American Airlines logo]()
$356
This Copa Airlines deal was found by Cheapflights users on 8/22. 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 9/108:47 am -
1 stop25h 32m
Mon 9/145:55 pm -
1 stop27h 07m
Deal found 8/22![Copa Airlines logo]()
$384
This Air Canada deal was found by Cheapflights users on 8/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:35 pm -
2 stops20h 35m
Tue 11/103:20 pm -
2 stops21h 58m
Deal found 8/17![Air Canada logo]()
$409
This Southwest deal was found by Cheapflights users on 8/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:40 am -
2 stops12h 00m
Sun 11/11:20 pm -
2 stops17h 45m
Deal found 8/19![Southwest logo]()
$487
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Sat 9/193:49 pm -
1 stop22h 21m
Sat 9/261:03 pm -
1 stop9h 51m
Deal found 8/20![United Airlines logo]()
$498
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:30 am -
1 stop8h 30m
Tue 10/61:00 pm -
1 stop10h 20m
Deal found 8/17![Delta logo]()
$582
This JetBlue deal was found by Cheapflights users on 8/19. 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.
Fri 10/165:35 am -
1 stop9h 20m
Fri 10/232:05 pm -
1 stop8h 20m
Deal found 8/19![JetBlue logo]()
$642
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:00 am -
1 stop9h 18m
Tue 10/132:44 pm -
2 stops17h 49m
Deal found 8/17![American Airlines logo]()
$357
This Copa Airlines deal was found by Cheapflights users on 8/19. 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 11/92:50 pm -
1 stop22h 30m
Mon 11/165:55 pm -
1 stop27h 06m
Deal found 8/19![Copa Airlines logo]()
$384
This Copa Airlines deal was found by Cheapflights users on 8/20. 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.
Sat 9/128:47 am -
1 stop24h 23m
Mon 10/58:45 am -
1 stop12h 17m
Deal found 8/20![Copa Airlines logo]()
$384
This Copa Airlines deal was found by Cheapflights users on 8/20. 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 11/152:50 pm -
1 stop21h 09m
Sat 11/213:59 am -
1 stop17h 02m
Deal found 8/20![Copa Airlines logo]()
$398
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:45 pm -
2 stops18h 33m
Tue 9/292:47 pm -
2 stops19h 52m
Deal found 8/17![American Airlines logo]()
$468
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sun 9/207:46 am -
2 stops30h 24m
Fri 9/251:20 pm -
2 stops28h 02m
Deal found 8/17![United Airlines logo]()
$527
This Copa Airlines deal was found by Cheapflights users on 8/19. 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 9/243:55 pm -
1 stop19h 09m
Sun 9/2710:03 am -
1 stop26h 26m
Deal found 8/19![Copa Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:57 pm -
1 stop16h 38m
Sat 10/172:00 pm -
1 stop9h 20m
Deal found 8/21![Delta logo]()
$626
This Copa Airlines deal was found by Cheapflights users on 8/22. 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.
Fri 9/258:47 am -
1 stop26h 17m
Tue 9/2910:03 am -
1 stop10h 59m
Deal found 8/22![Copa Airlines logo]()
$438
This JetBlue deal was found by Cheapflights users on 8/20. 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.
Sat 9/126:19 am -
1 stop7h 38m
Fri 9/181:05 pm -
1 stop8h 34m
Deal found 8/20![JetBlue logo]()
$693
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Tue 10/62:15 pm -
2 stops23h 55m
Sat 10/174:30 pm -
1 stop16h 54m
Deal found 8/21![United Airlines logo]()
$646
This Copa Airlines deal was found by Cheapflights users on 8/20. 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 9/18:47 am -
1 stop24h 23m
Thu 9/108:30 am -
1 stop12h 32m
Deal found 8/20![Copa Airlines logo]()
$448
This Copa Airlines deal was found by Cheapflights users on 8/20. 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 9/208:47 am -
1 stop24h 39m
Sat 9/265:55 pm -
1 stop27h 07m
Deal found 8/20![Copa Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 8/21. 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 10/56:00 am -
3 stops32h 10m
Thu 10/151:20 pm -
2 stops32h 39m
Deal found 8/21![United Airlines logo]()
$741
This Copa Airlines deal was found by Cheapflights users on 8/22. 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.
Sat 9/198:47 am -
1 stop24h 23m
Sat 9/265:55 pm -
1 stop27h 07m
Deal found 8/22![Copa Airlines logo]()
$495
Last-minute flights from Boston to Costa RicaDiscover last-minute flight deals from Boston to Costa Rica. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Costa Rica. Data last updated August 22, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Sat 9/58:47 am -
1 stop24h 23m
Sun 9/135:55 pm -
1 stop27h 07m
Deal found 8/17![Copa Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/68:47 am -
1 stop24h 23m
Sun 9/2710:03 am -
1 stop10h 59m
Deal found 8/21![Copa Airlines logo]()
$382
This Copa Airlines deal was found by Cheapflights users on 8/17. 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.
Mon 9/73:55 pm -
1 stop19h 09m
Wed 9/95:55 pm -
1 stop27h 07m
Deal found 8/17![Copa Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Mon 9/73:55 pm -
1 stop17h 15m
Sun 9/1310:03 am -
1 stop10h 59m
Deal found 8/17![Copa Airlines logo]()
$392
This Copa Airlines deal was found by Cheapflights users on 8/17. 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.
Thu 9/108:47 am -
1 stop25h 32m
Sun 9/135:55 pm -
1 stop27h 07m
Deal found 8/17![Copa Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Sat 9/128:30 am -
2 stops13h 37m
Mon 10/56:00 am -
1 stop16h 59m
Deal found 8/19![American Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Mon 9/143:55 pm -
1 stop17h 15m
Mon 9/2110:03 am -
1 stop10h 59m
Deal found 8/18![Copa Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Tue 9/158:47 am -
1 stop24h 23m
Tue 9/2210:03 am -
1 stop10h 59m
Deal found 8/17![Copa Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Wed 9/163:55 pm -
1 stop17h 15m
Wed 9/235:55 pm -
1 stop27h 07m
Deal found 8/18![Copa Airlines logo]()
$372
This Copa Airlines deal was found by Cheapflights users on 8/18. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:55 pm -
1 stop17h 15m
Mon 9/285:55 pm -
1 stop27h 07m
Deal found 8/18![Copa Airlines logo]()
$393
This Copa Airlines deal was found by Cheapflights users on 8/22. 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 9/298:47 am -
1 stop24h 23m
Sat 10/105:55 pm -
1 stop18h 34m
Deal found 8/22![Copa Airlines logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 8/22. 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.
Wed 9/303:55 pm -
1 stop18h 24m
Mon 10/510:03 am -
1 stop10h 59m
Deal found 8/22![Copa Airlines logo]()
$385
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 August 22, 2026.
Search for one-way flight options from Boston to Costa Rica. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This American Airlines deal was found by Cheapflights users on 8/22. 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 10/136:00 am -
1 stop9h 18m
Deal found 8/22![American Airlines logo]()
$159
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 9/146:05 am -
2 stops9h 13m
Deal found 8/21![American Airlines logo]()
$160
This Kissandfly.com deal was found by Cheapflights users on 8/17. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:00 am -
1 stop10h 18m
Deal found 8/17![British Airways logo]()
$161
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 am -
1 stop10h 18m
Deal found 8/17![American Airlines logo]()
$162
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:30 pm -
1 stop20h 03m
Deal found 8/17![American Airlines logo]()
$163
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/148:30 pm -
2 stops17h 40m
Deal found 8/18![United Airlines logo]()
$165
This American Airlines deal was found by Cheapflights users on 8/20. 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.
Sat 9/197:17 pm -
2 stops20h 01m
Deal found 8/20![American Airlines logo]()
$166
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 10/149:30 am -
2 stops12h 51m
Deal found 8/18![American Airlines logo]()
$172
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:13 pm -
1 stop25h 05m
Deal found 8/17![American Airlines logo]()
$175
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:17 am -
1 stop10h 43m
Deal found 8/17![American Airlines logo]()
$175
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Mon 11/98:50 pm -
2 stops17h 11m
Deal found 8/21![American Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Fri 9/119:25 am -
2 stops12h 42m
Deal found 8/19![American Airlines logo]()
$179
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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Kissandfly.com) |
One-way from | $159 (American Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $525 |
Good round-trip deal | $557 or less |
Good one-way deal | $222 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 7,457,451 searches. Data last updated August 22, 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
BostonLiberia
BOS Boston Logan Intl - LIR Liberia
BOSLIR
Boston Logan Intl
Mon 10/5
9:25 pm-1:18 pm
2 stops17h 53m
Liberia
Thu 10/15
2:44 pm-12:59 am
1 stop8h 15m
$356
BostonLiberia
BOS Boston Logan Intl - LIR Liberia
BOSLIR
Boston Logan Intl
Tue 10/6
6:00 am-1:18 pm
1 stop9h 18m
Liberia
Tue 10/13
2:44 pm-10:33 am
2 stops17h 49m
$357
BostonSan José
BOS Boston Logan Intl - SJO San José Juan Santamaria Intl
BOSSJO
Boston Logan Intl
Thu 9/10
8:47 am-8:19 am
1 stop25h 32m
San José Juan Santamaria Intl
Mon 9/14
5:55 pm-11:02 pm
1 stop27h 07m
$384
BostonSan José
BOS Boston Logan Intl - SJO San José Juan Santamaria Intl
BOSSJO
Boston Logan Intl
Mon 11/9
2:50 pm-12:20 pm
1 stop22h 30m
San José Juan Santamaria Intl
Mon 11/16
5:55 pm-10:01 pm
1 stop27h 06m
$384
BostonSan José
BOS Boston Logan Intl - SJO San José Juan Santamaria Intl
BOSSJO
Boston Logan Intl
Sat 9/12
8:47 am-7:10 am
1 stop24h 23m
San José Juan Santamaria Intl
Mon 10/5
8:45 am-11:02 pm
1 stop12h 17m
$384
BostonSan José
BOS Boston Logan Intl - SJO San José Juan Santamaria Intl
BOSSJO
Boston Logan Intl
Sun 11/15
2:50 pm-10:59 am
1 stop21h 09m
San José Juan Santamaria Intl
Sat 11/21
3:59 am-10:01 pm
1 stop17h 02m
$398
BostonSan José
BOS Boston Logan Intl - SJO San José Juan Santamaria Intl
BOSSJO
Boston Logan Intl
Thu 9/24
3:55 pm-9:04 am
1 stop19h 09m
San José Juan Santamaria Intl
Sun 9/27
10:03 am-2:29 pm
1 stop26h 26m
$404
BostonLiberia
BOS Boston Logan Intl - LIR Liberia
BOSLIR
Boston Logan Intl
Tue 11/3
6:35 pm-2:10 pm
2 stops20h 35m
Liberia
Tue 11/10
3:20 pm-2:18 pm
2 stops21h 58m
$409
BostonSan José
BOS Boston Logan Intl - SJO San José Juan Santamaria Intl
BOSSJO
Boston Logan Intl
Fri 9/25
8:47 am-9:04 am
1 stop26h 17m
San José Juan Santamaria Intl
Tue 9/29
10:03 am-11:02 pm
1 stop10h 59m
$438
BostonSan José
BOS Boston Logan Intl - SJO San José Juan Santamaria Intl
BOSSJO
Boston Logan Intl
Tue 9/1
8:47 am-7:10 am
1 stop24h 23m
San José Juan Santamaria Intl
Thu 9/10
8:30 am-11:02 pm
1 stop12h 32m
$448
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-LIR
BOS-SJO
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-LIR
BOS-SJO
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 $373). Flying from Boston to Costa Rica in December is currently the most expensive (average of $631). 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 August 22, 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.
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Crew
8.5
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
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.
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 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 August 22, 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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$580 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$159 | Average$509 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$169 | Average$531 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$177 | Average$384 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$251 | Average$510 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$285 | Average$548 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$316 | Average$563 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$327 | Average$434 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$381 | Average$635 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$470 | Average$1,072 | FlexibilityNo cancel fee | On-time63% |