$118+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SJO
Mar 5 — Mar 121
1 adult, Economy
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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
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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
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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 February 3, 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 February 3, 2026.
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/256:30 am
BOS
- SJO
1 stop14h 42m
American Airlines
Wed 5/612:35 pm
SJO
- BOS
1 stop8h 32m
American Airlines
Deal found 2/3![American Airlines logo]()
$276
This Cheapflightsfares deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/186:10 pm
BOS
- SJO
1 stop19h 12m
Spirit Airlines
Tue 4/1411:38 am
SJO
- BOS
1 stop7h 55m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$277
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Wed 3/45:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Sat 3/71:31 pm
SJO
- BOS
1 stop9h 13m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$278
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/35:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Mon 3/911:35 am
SJO
- BOS
1 stop22h 13m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$279
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Wed 3/412:43 pm
BOS
- SJO
1 stop23h 57m
Spirit Airlines
Wed 3/1111:35 am
SJO
- BOS
1 stop8h 26m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$280
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/53:07 pm
BOS
- SJO
1 stop16h 59m
Copa Airlines
Wed 2/1110:08 am
SJO
- BOS
1 stop10h 55m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$281
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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.
Wed 3/115:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Wed 3/1812:19 pm
SJO
- BOS
1 stop9h 40m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$282
This Orbitz deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Thu 3/55:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Thu 3/1211:38 am
SJO
- BOS
1 stop7h 55m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$283
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/99:00 am
BOS
- SJO
1 stop8h 23m
JetBlue
Fri 3/61:10 pm
SJO
- BOS
1 stop9h 49m
JetBlue
Deal found 2/1![JetBlue logo]()
$284
This Travelocity deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:27 am
BOS
- SJO
1 stop7h 55m
Multiple Airlines
Tue 2/247:48 pm
SJO
- BOS
1 stop12h 57m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$285
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/311:10 am
BOS
- SJO
2 stops12h 20m
American Airlines
Mon 2/96:38 am
SJO
- BOS
1 stop15h 52m
American Airlines
Deal found 2/1![American Airlines logo]()
$287
This Expedia deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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.
Mon 3/29:54 am
BOS
- LIR
Nonstop5h 56m
JetBlue
Wed 3/112:55 pm
LIR
- BOS
Nonstop5h 20m
JetBlue
Deal found 2/1![JetBlue logo]()
$329
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 February 3, 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 February 3, 2026.
This Copa Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/257:31 am
BOS
- SJO
1 stop12h 25m
Copa Airlines
Sun 3/85:51 pm
SJO
- BOS
1 stop18h 51m
Copa Airlines
Deal found 2/3![Copa Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 3/105:35 am
BOS
- LIR
1 stop8h 15m
Delta
Wed 3/252:05 pm
LIR
- BOS
1 stop17h 59m
Delta
Deal found 1/31![Delta logo]()
$346
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/17:15 am
BOS
- LIR
1 stop12h 22m
United Airlines
Thu 3/52:01 pm
LIR
- BOS
1 stop9h 34m
United Airlines
Deal found 2/1![United Airlines logo]()
$346
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/287:02 pm
BOS
- LIR
2 stops18h 08m
American Airlines
Sat 3/73:13 pm
LIR
- BOS
1 stop18h 41m
American Airlines
Deal found 2/2![American Airlines logo]()
$369
This JetBlue deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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.
Sun 3/16:00 am
BOS
- LIR
1 stop7h 55m
JetBlue
Wed 3/112:55 pm
LIR
- BOS
Nonstop5h 20m
JetBlue
Deal found 2/1![JetBlue logo]()
$410
This Copa Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/23:05 pm
BOS
- SJO
1 stop18h 15m
Copa Airlines
Sun 3/86:08 pm
SJO
- BOS
1 stop18h 34m
Copa Airlines
Deal found 2/3![Copa Airlines logo]()
$281
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/193:07 pm
BOS
- SJO
1 stop16h 59m
Copa Airlines
Fri 2/275:50 am
SJO
- BOS
1 stop15h 13m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$281
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/57:44 am
BOS
- SJO
1 stop12h 17m
Copa Airlines
Mon 3/94:09 am
SJO
- BOS
1 stop17h 01m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$281
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/25:35 am
BOS
- LIR
2 stops14h 02m
United Airlines
Thu 3/52:01 pm
LIR
- BOS
1 stop9h 34m
United Airlines
Deal found 2/2![United Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/36:55 am
BOS
- LIR
1 stop7h 55m
Delta
Tue 3/101:05 pm
LIR
- BOS
1 stop10h 08m
Delta
Deal found 2/1![Delta logo]()
$375
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/263:07 pm
BOS
- SJO
3 stops26h 39m
Copa Airlines
Thu 3/55:50 am
SJO
- BOS
1 stop15h 20m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$286
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/156:53 pm
BOS
- LIR
1 stop18h 35m
American Airlines
Tue 4/212:40 pm
LIR
- BOS
1 stop17h 22m
American Airlines
Deal found 2/2![American Airlines logo]()
$382
This Copa Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/13:05 pm
BOS
- SJO
3 stops26h 41m
Copa Airlines
Tue 3/104:09 am
SJO
- BOS
1 stop8h 33m
Copa Airlines
Deal found 2/1![Copa Airlines logo]()
$286
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 4/154:53 pm
BOS
- LIR
1 stop21h 17m
United Airlines
Sat 4/253:27 pm
LIR
- BOS
2 stops15h 58m
United Airlines
Deal found 2/1![United Airlines logo]()
$385
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/13:05 pm
BOS
- SJO
3 stops26h 41m
Copa Airlines
Sun 3/85:51 pm
SJO
- BOS
1 stop18h 51m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sat 2/216:25 pm
BOS
- LIR
1 stop20h 05m
Delta
Fri 2/273:30 pm
LIR
- BOS
1 stop17h 32m
Delta
Deal found 2/2![Delta logo]()
$460
This Copa Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/263:07 pm
BOS
- SJO
3 stops26h 39m
Copa Airlines
Tue 3/106:08 pm
SJO
- BOS
1 stop18h 34m
Copa Airlines
Deal found 2/3![Copa Airlines logo]()
$286
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 7/245:32 pm
BOS
- LIR
1 stop18h 28m
United Airlines
Sun 8/23:27 pm
LIR
- BOS
1 stop19h 02m
United Airlines
Deal found 2/2![United Airlines logo]()
$426
This Copa Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/267:31 am
BOS
- SJO
1 stop12h 25m
Copa Airlines
Fri 3/610:08 am
SJO
- BOS
1 stop11h 02m
Copa Airlines
Deal found 2/1![Copa Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 6/117:38 pm
BOS
- LIR
2 stops16h 22m
United Airlines
Tue 6/163:27 pm
LIR
- BOS
2 stops16h 12m
United Airlines
Deal found 2/2![United Airlines logo]()
$434
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/13:05 pm
BOS
- SJO
1 stop18h 15m
Copa Airlines
Fri 3/65:50 am
SJO
- BOS
1 stop15h 20m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 3/39:47 am
BOS
- LIR
1 stop9h 50m
United Airlines
Thu 3/121:01 pm
LIR
- BOS
1 stop9h 34m
United Airlines
Deal found 1/31![United Airlines logo]()
$456
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/67:44 am
BOS
- SJO
1 stop12h 17m
Copa Airlines
Sun 3/86:08 pm
SJO
- BOS
1 stop18h 34m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$289
Last-minute flights from Boston to Costa RicaDiscover last-minute flight deals from Boston to Costa Rica. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Costa Rica. Data last updated February 3, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/311:10 am
BOS
- SJO
2 stops12h 20m
American Airlines
Mon 2/96:38 am
SJO
- BOS
1 stop15h 52m
American Airlines
Deal found 2/1![American Airlines logo]()
$287
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/53:07 pm
BOS
- SJO
1 stop16h 59m
Copa Airlines
Wed 2/1110:08 am
SJO
- BOS
1 stop10h 55m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$281
This Copa Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/53:07 pm
BOS
- SJO
3 stops26h 39m
Copa Airlines
Thu 2/128:11 am
SJO
- BOS
1 stop12h 52m
Copa Airlines
Deal found 2/1![Copa Airlines logo]()
$286
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/99:00 am
BOS
- SJO
1 stop8h 23m
JetBlue
Fri 3/61:10 pm
SJO
- BOS
1 stop9h 49m
JetBlue
Deal found 2/1![JetBlue logo]()
$284
This Travelocity deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:27 am
BOS
- SJO
1 stop7h 55m
Multiple Airlines
Tue 2/247:48 pm
SJO
- BOS
1 stop12h 57m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$285
This Cheapflightsfares deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/186:10 pm
BOS
- SJO
1 stop19h 12m
Spirit Airlines
Tue 4/1411:38 am
SJO
- BOS
1 stop7h 55m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/2510:24 am
BOS
- SJO
1 stop10h 48m
American Airlines
Wed 5/1312:35 pm
SJO
- BOS
1 stop8h 32m
American Airlines
Deal found 2/3![American Airlines logo]()
$276
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/35:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Mon 3/911:35 am
SJO
- BOS
1 stop22h 13m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$279
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Wed 3/44:22 pm
BOS
- SJO
1 stop20h 18m
Spirit Airlines
Mon 3/911:35 am
SJO
- BOS
1 stop22h 13m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$278
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Wed 3/412:43 pm
BOS
- SJO
1 stop23h 57m
Spirit Airlines
Wed 3/1111:35 am
SJO
- BOS
1 stop8h 26m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$280
This Orbitz deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Thu 3/55:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Thu 3/1211:38 am
SJO
- BOS
1 stop7h 55m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$283
This CheapOair deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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.
Wed 3/115:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Wed 3/1812:19 pm
SJO
- BOS
1 stop9h 40m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$282
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 February 3, 2026.
Search for one-way flight options from Boston to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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.
Thu 3/55:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Deal found 2/1![Spirit Airlines logo]()
$118
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/189:57 am
BOS
- SJO
2 stops11h 15m
American Airlines
Deal found 2/1![American Airlines logo]()
$120
This Cheapflightsfares deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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.
Fri 2/205:27 am
BOS
- SJO
1 stop7h 55m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$122
This Priceline deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:40 am
BOS
- SJO
1 stop7h 42m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$124
This CheapOair deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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.
Sat 4/117:14 pm
BOS
- SJO
1 stop17h 28m
Spirit Airlines
Deal found 2/1![Spirit Airlines logo]()
$125
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Wed 3/412:43 pm
BOS
- SJO
1 stop23h 57m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$129
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:10 pm
BOS
- SJO
2 stops22h 10m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$133
This Avianca deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/204:50 pm
BOS
- SJO
1 stop8h 50m
Avianca
Deal found 2/2![Avianca logo]()
$135
This Mytrip deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:10 pm
BOS
- SJO
2 stops22h 10m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$140
This Air Canada deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/2510:15 am
BOS
- LIR
1 stop29h 35m
Air Canada
Deal found 2/2![Air Canada logo]()
$147
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/159:52 am
BOS
- LIR
Nonstop5h 43m
JetBlue
Deal found 2/2![JetBlue logo]()
$150
This Air Canada deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/2![Air Canada logo]()
$152
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $278 (American Airlines) |
One-way from | $118 (CheapOair) |
Popular in | December |
Cheapest in | October |
Average price | $495 |
Good round-trip deal | $311 or less |
Good one-way deal | $142 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 February 3, 2026.
Use the filters below to find and compare flights from Boston to Costa Rica that are best for you.
Fly from
Boston
Fly to
Costa Rica
Route
Depart
Return
Price
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Wed 2/25
7:31 am-6:56 pm
1 stop12h 25m
San José Juan Santamaria Intl
Sun 3/8
5:51 pm-2:42 pm
1 stop18h 51m
$281
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Mon 3/2
3:05 pm-8:20 am
1 stop18h 15m
San José Juan Santamaria Intl
Sun 3/8
6:08 pm-2:42 pm
1 stop18h 34m
$281
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Thu 2/19
3:07 pm-7:06 am
1 stop16h 59m
San José Juan Santamaria Intl
Fri 2/27
5:50 am-10:03 pm
1 stop15h 13m
$281
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Thu 3/5
7:44 am-7:01 pm
1 stop12h 17m
San José Juan Santamaria Intl
Mon 3/9
4:09 am-11:10 pm
1 stop17h 01m
$281
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Thu 2/26
3:07 pm-4:46 pm
3 stops26h 39m
San José Juan Santamaria Intl
Thu 3/5
5:50 am-10:10 pm
1 stop15h 20m
$286
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Sun 3/1
3:05 pm-4:46 pm
3 stops26h 41m
San José Juan Santamaria Intl
Tue 3/10
4:09 am-2:42 pm
1 stop8h 33m
$286
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Sun 3/1
3:05 pm-4:46 pm
3 stops26h 41m
San José Juan Santamaria Intl
Sun 3/8
5:51 pm-2:42 pm
1 stop18h 51m
$286
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Thu 2/26
3:07 pm-4:46 pm
3 stops26h 39m
San José Juan Santamaria Intl
Tue 3/10
6:08 pm-2:42 pm
1 stop18h 34m
$286
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Thu 2/26
7:31 am-6:56 pm
1 stop12h 25m
San José Juan Santamaria Intl
Fri 3/6
10:08 am-10:10 pm
1 stop11h 02m
$289
BostonSan José
BOS - SJO
BOSSJO
Boston Logan Intl
Sun 3/1
3:05 pm-8:20 am
1 stop18h 15m
San José Juan Santamaria Intl
Fri 3/6
5:50 am-10:10 pm
1 stop15h 20m
$289
Showing 1-10 of 39 results
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, January is the cheapest month in which you can book a flight from Boston to Costa Rica (average of $184). Flying from Boston to Costa Rica in July is currently the most expensive (average of $306). 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 February 3, 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 February 3, 2026.
Peruse reviews from past customers who have flown with Delta, Copa Airlines, and American 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.
Crew
8.5
Boarding
8.1
Comfort
7.9
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Boarding
8.1
Comfort
7.9
Food
7.2
Entertainment
7.8
Overall
7.9
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.
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 for Boston to Costa Rica
See prices for flight routes from nearby airports that may be better suited for you.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$390 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$159 | Average$422 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$211 | Average$438 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$216 | Average$517 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$549 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$243 | Average$530 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$251 | Average$498 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$264 | Average$635 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$301 | Average$550 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$441 | Average$887 | FlexibilityNo cancel fee | On-time63% |