$128+ Cheap flights from Boston (BOS) to Puerto Rico
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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SJU
Jun 16 — Jun 231
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Puerto Rico 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 Puerto Rico
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Cheapest flights from Boston to Puerto RicoExplore the most affordable flight options available from Boston to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 17, 2026.
Explore the most affordable flight options available from Boston to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 17, 2026.
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Thu 8/206:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Wed 8/265:15 pm
SJU
- BOS
1 stop8h 12m
Frontier
Deal found 5/12![Frontier logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 7/611:05 am
BOS
- SJU
1 stop15h 06m
Frontier
Sat 7/115:15 pm
SJU
- BOS
1 stop8h 08m
Frontier
Deal found 5/12![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 8/311:05 am
BOS
- SJU
1 stop12h 24m
Frontier
Wed 8/125:15 pm
SJU
- BOS
1 stop8h 08m
Frontier
Deal found 5/12![Frontier logo]()
$253
This Frontier deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Fri 9/45:15 pm
SJU
- BOS
1 stop8h 12m
Frontier
Deal found 5/12![Frontier logo]()
$256
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Thu 8/206:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Mon 8/245:15 pm
SJU
- BOS
1 stop14h 37m
Frontier
Deal found 5/12![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 8/46:00 am
BOS
- SJU
1 stop8h 16m
Frontier
Mon 8/103:06 am
SJU
- BOS
1 stop7h 03m
Frontier
Deal found 5/12![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 8/311:05 am
BOS
- SJU
1 stop12h 24m
Frontier
Mon 8/105:15 pm
SJU
- BOS
1 stop8h 08m
Frontier
Deal found 5/12![Frontier logo]()
$273
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Sun 8/236:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Sun 8/308:00 am
SJU
- BOS
1 stop27h 05m
Frontier
Deal found 5/12![Frontier logo]()
$276
This Expedia deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:11 am
BOS
- BQN
1 stop23h 46m
Frontier
Fri 10/302:48 am
BQN
- BOS
1 stop7h 21m
Frontier
Deal found 5/13![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3111:05 am
BOS
- SJU
1 stop15h 06m
Frontier
Thu 8/65:15 pm
SJU
- BOS
1 stop8h 08m
Frontier
Deal found 5/13![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 8/236:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Thu 8/275:15 pm
SJU
- BOS
1 stop8h 12m
Frontier
Deal found 5/15![Frontier logo]()
$280
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:16 pm
BOS
- SJU
Nonstop4h 04m
Multiple Airlines
Thu 6/45:15 pm
SJU
- BOS
1 stop8h 09m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$282
Best flights from Boston to Puerto RicoDiscover carefully curated flight deals from Boston to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 17, 2026.
Discover carefully curated flight deals from Boston to Puerto Rico that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 17, 2026.
This JetBlue deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 6/66:10 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Tue 6/168:40 pm
SJU
- BOS
Nonstop4h 06m
JetBlue
Deal found 5/15![JetBlue logo]()
$303
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 10/268:15 am
BOS
- SJU
Nonstop4h 06m
Delta
Sat 10/315:43 pm
SJU
- BOS
1 stop7h 15m
Delta
Deal found 5/15![Delta logo]()
$308
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 10/207:30 am
BOS
- SJU
1 stop6h 15m
United Airlines
Tue 10/277:30 am
SJU
- BOS
2 stops10h 43m
United Airlines
Deal found 5/14![United Airlines logo]()
$312
This CheapOair deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 8/311:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Mon 8/1010:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/12![Frontier logo]()
$321
This Orbitz deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Tue 8/185:10 am
BOS
- BQN
1 stop8h 16m
Multiple Airlines
Sun 8/2312:28 pm
BQN
- BOS
1 stop21h 41m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:50 am
BOS
- SJU
1 stop8h 40m
Southwest
Sun 8/235:30 am
SJU
- BOS
1 stop9h 25m
Southwest
Deal found 5/16![Southwest logo]()
$377
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 10/178:15 am
BOS
- SJU
Nonstop4h 06m
Delta
Tue 10/207:00 am
SJU
- BOS
1 stop11h 27m
Delta
Deal found 5/15![Delta logo]()
$308
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:44 am
BOS
- BQN
2 stops12h 13m
United Airlines
Fri 10/3012:09 am
BQN
- BOS
1 stop8h 35m
United Airlines
Deal found 5/13![United Airlines logo]()
$312
This CheapOair deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 7/811:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Mon 7/1310:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/16![Frontier logo]()
$336
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:15 am
BOS
- SJU
Nonstop4h 05m
Delta
Wed 9/165:41 pm
SJU
- BOS
1 stop7h 25m
Delta
Deal found 5/12![Delta logo]()
$308
This JetBlue deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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.
Wed 7/84:30 pm
BOS
- SJU
1 stop7h 29m
JetBlue
Thu 7/236:00 am
SJU
- BOS
Nonstop4h 05m
JetBlue
Deal found 5/14![JetBlue logo]()
$342
This United Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 10/271:30 pm
BOS
- BQN
1 stop9h 27m
United Airlines
Tue 11/31:09 am
BQN
- BOS
2 stops12h 38m
United Airlines
Deal found 5/15![United Airlines logo]()
$312
This CheapOair deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Fri 7/1711:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Sun 7/1910:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/13![Frontier logo]()
$336
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/219:05 am
BOS
- SJU
1 stop7h 28m
Delta
Tue 8/256:48 am
SJU
- BOS
1 stop7h 04m
Delta
Deal found 5/16![Delta logo]()
$312
This JetBlue deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 6/78:00 am
BOS
- SJU
Nonstop4h 02m
JetBlue
Thu 6/183:49 pm
SJU
- BOS
1 stop8h 10m
JetBlue
Deal found 5/13![JetBlue logo]()
$382
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Fri 7/1011:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Mon 7/1310:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/12![Frontier logo]()
$366
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 8/108:50 am
BOS
- SJU
Nonstop4h 07m
Delta
Mon 8/247:30 am
SJU
- BOS
1 stop8h 43m
Delta
Deal found 5/16![Delta logo]()
$348
This CheapOair deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Fri 7/3111:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Thu 8/610:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/13![Frontier logo]()
$371
This CheapOair deal was found by Cheapflights users on 5/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:05 am
BOS
- PSE
1 stop22h 41m
Multiple Airlines
Mon 8/175:01 am
PSE
- BOS
1 stop28h 26m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 8/243:30 pm
BOS
- BQN
1 stop7h 39m
United Airlines
Tue 8/2512:15 am
BQN
- BOS
2 stops16h 12m
United Airlines
Deal found 5/16![United Airlines logo]()
$412
This CheapOair deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 7/1411:05 am
BOS
- PSE
1 stop23h 52m
Frontier
Mon 7/2010:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/15![Frontier logo]()
$376
This United Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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 8/273:30 pm
BOS
- BQN
1 stop7h 39m
United Airlines
Sun 8/3012:15 am
BQN
- BOS
1 stop8h 02m
United Airlines
Deal found 5/15![United Airlines logo]()
$422
This CheapOair deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Fri 7/38:31 pm
BOS
- PSE
1 stop20h 25m
Multiple Airlines
Mon 7/610:31 am
PSE
- BOS
1 stop23h 38m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$575
This CheapOair deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” 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.
Fri 8/1411:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Sun 8/1610:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/15![Frontier logo]()
$424
This JetBlue deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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 5/318:00 am
BOS
- MAZ
1 stop8h 11m
JetBlue
Thu 6/41:19 pm
MAZ
- BOS
1 stop6h 14m
JetBlue
Deal found 5/16![JetBlue logo]()
$611
This CheapOair deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Fri 7/1711:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Sat 7/2510:31 am
PSE
- BOS
1 stop23h 38m
Frontier
Deal found 5/13![Frontier logo]()
$431
This JetBlue deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Thu 5/2812:16 pm
BOS
- MAZ
1 stop6h 27m
JetBlue
Tue 6/27:35 am
MAZ
- BOS
1 stop9h 58m
JetBlue
Deal found 5/12![JetBlue logo]()
$621
This JetBlue deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:59 am
BOS
- CPX
1 stop7h 22m
JetBlue
Fri 7/245:41 pm
CPX
- BOS
1 stop7h 14m
JetBlue
Deal found 5/15![JetBlue logo]()
$687
This JetBlue deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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.
Wed 8/129:59 am
BOS
- CPX
1 stop7h 22m
JetBlue
Wed 8/195:41 pm
CPX
- BOS
1 stop7h 14m
JetBlue
Deal found 5/13![JetBlue logo]()
$687
This JetBlue deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:59 am
BOS
- VQS
1 stop8h 31m
JetBlue
Fri 7/244:55 pm
VQS
- BOS
1 stop8h 00m
JetBlue
Deal found 5/15![JetBlue logo]()
$727
Last-minute flights from Boston to Puerto RicoDiscover last-minute flight deals from Boston to Puerto Rico. Data last updated May 17, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Puerto Rico. Data last updated May 17, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:40 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Sat 6/136:00 am
SJU
- BOS
Nonstop4h 07m
JetBlue
Deal found 5/13![JetBlue logo]()
$288
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 5/2712:16 pm
BOS
- SJU
Nonstop4h 04m
Multiple Airlines
Tue 6/98:00 am
SJU
- BOS
1 stop27h 05m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$306
This Flysmarter deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:40 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Thu 6/45:01 am
SJU
- BOS
Nonstop4h 15m
JetBlue
Deal found 5/15![JetBlue logo]()
$295
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Fri 5/295:40 pm
BOS
- SJU
Nonstop4h 02m
Multiple Airlines
Fri 6/55:15 pm
SJU
- BOS
1 stop8h 09m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:50 am
BOS
- SJU
Nonstop3h 59m
Delta
Thu 6/42:00 pm
SJU
- BOS
Nonstop4h 18m
Delta
Deal found 5/15![Delta logo]()
$302
This Flysmarter deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/305:40 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Fri 6/55:01 am
SJU
- BOS
Nonstop4h 09m
JetBlue
Deal found 5/16![JetBlue logo]()
$294
This Priceline deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:16 pm
BOS
- SJU
Nonstop4h 04m
Multiple Airlines
Thu 6/45:15 pm
SJU
- BOS
1 stop8h 09m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$282
This Cheapflightsfares deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:40 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Thu 6/41:27 pm
SJU
- BOS
Nonstop4h 06m
JetBlue
Deal found 5/12![JetBlue logo]()
$298
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 6/21:29 pm
BOS
- SJU
1 stop10h 06m
Delta
Thu 6/112:05 pm
SJU
- BOS
Nonstop4h 09m
Delta
Deal found 5/12![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 6/68:50 am
BOS
- SJU
Nonstop3h 59m
Delta
Thu 6/182:05 pm
SJU
- BOS
Nonstop4h 09m
Delta
Deal found 5/13![Delta logo]()
$303
This Priceline deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” 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.
Sat 6/66:10 pm
BOS
- SJU
Nonstop4h 02m
Multiple Airlines
Tue 6/95:15 pm
SJU
- BOS
1 stop14h 37m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$310
This Cheapflightsfares deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 6/128:43 am
BOS
- BQN
1 stop10h 01m
JetBlue
Fri 6/194:45 am
BQN
- BOS
1 stop10h 06m
JetBlue
Deal found 5/13![JetBlue logo]()
$471
One-way flights from Boston to Puerto RicoSearch for one-way flight options from Boston to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated May 17, 2026.
Search for one-way flight options from Boston to Puerto Rico. Find affordable one-way fares based on user searches. Data last updated May 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 7/1811:05 am
BOS
- SJU
1 stop20h 52m
Frontier
Deal found 5/12![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Deal found 5/12![Frontier logo]()
$137
This Frontier deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:00 am
BOS
- SJU
1 stop8h 16m
Frontier
Deal found 5/12![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1711:05 am
BOS
- SJU
1 stop15h 06m
Frontier
Deal found 5/12![Frontier logo]()
$140
This Super.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 7/811:05 am
BOS
- SJU
1 stop15h 06m
Frontier
Deal found 5/13![Frontier logo]()
$142
This Orbitz deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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.
Sat 11/711:05 am
BOS
- SJU
1 stop30h 32m
Frontier
Deal found 5/12![Frontier logo]()
$144
This CheapOair deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” 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 7/2011:05 am
BOS
- PSE
1 stop22h 41m
Frontier
Deal found 5/12![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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 7/3011:05 am
BOS
- SJU
1 stop15h 06m
Frontier
Deal found 5/14![Frontier logo]()
$146
This SmartFares deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:00 am
BOS
- SJU
Nonstop4h 04m
JetBlue
Deal found 5/13![JetBlue logo]()
$147
This CheapOair deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 9/16:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Deal found 5/13![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” 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 9/36:00 am
BOS
- SJU
1 stop8h 15m
Frontier
Deal found 5/13![Frontier logo]()
$149
This Southwest deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” 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.
Wed 8/195:25 am
BOS
- SJU
1 stop7h 25m
Southwest
Deal found 5/14![Southwest logo]()
$156
Find flight deals from Boston to Puerto Rico
Keep the following information in mind while searching for Boston to Puerto Rico flight deals. Data was last updated May 17, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $238 (Priceline) |
One-way from | $128 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $349 |
Good round-trip deal | $366 or less |
Good one-way deal | $157 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Puerto Rico 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 May 17, 2026.
Use the filters below to find and compare flights from Boston to Puerto Rico that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Sat 6/6
6:10 pm-10:12 pm
Nonstop4h 02m
San Juan Luis Munoz Marin Intl
Tue 6/16
8:40 pm-12:46 am
Nonstop4h 06m
$303
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Mon 10/26
8:15 am-12:21 pm
Nonstop4h 06m
San Juan Luis Munoz Marin Intl
Sat 10/31
5:43 pm-12:58 am
1 stop7h 15m
$308
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Sat 10/17
8:15 am-12:21 pm
Nonstop4h 06m
San Juan Luis Munoz Marin Intl
Tue 10/20
7:00 am-6:27 pm
1 stop11h 27m
$308
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Fri 9/11
8:15 am-12:20 pm
Nonstop4h 05m
San Juan Luis Munoz Marin Intl
Wed 9/16
5:41 pm-1:06 am
1 stop7h 25m
$308
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Tue 10/20
7:30 am-1:45 pm
1 stop6h 15m
San Juan Luis Munoz Marin Intl
Tue 10/27
7:30 am-6:13 pm
2 stops10h 43m
$312
BostonAguadilla
BOS - BQN
BOSBQN
Boston Logan Intl
Thu 10/29
10:44 am-10:57 pm
2 stops12h 13m
Aguadilla Borinquen
Fri 10/30
12:09 am-8:44 am
1 stop8h 35m
$312
BostonAguadilla
BOS - BQN
BOSBQN
Boston Logan Intl
Tue 10/27
1:30 pm-10:57 pm
1 stop9h 27m
Aguadilla Borinquen
Tue 11/3
1:09 am-12:47 pm
2 stops12h 38m
$312
BostonSan Juan
BOS - SJU
BOSSJU
Boston Logan Intl
Fri 8/21
9:05 am-4:33 pm
1 stop7h 28m
San Juan Luis Munoz Marin Intl
Tue 8/25
6:48 am-1:52 pm
1 stop7h 04m
$312
BostonPonce
BOS - PSE
BOSPSE
Boston Logan Intl
Mon 8/3
11:05 am-9:46 am
1 stop22h 41m
Ponce Mercedita
Mon 8/10
10:31 am-10:09 am
1 stop23h 38m
$321
BostonPonce
BOS - PSE
BOSPSE
Boston Logan Intl
Wed 7/8
11:05 am-9:46 am
1 stop22h 41m
Ponce Mercedita
Mon 7/13
10:31 am-10:09 am
1 stop23h 38m
$336
Showing 1-10 of 60 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Boston-Puerto Rico flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Boston-Puerto Rico flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Boston-Puerto Rico flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Puerto Rico flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Puerto Rico flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Puerto Rico
Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Boston with our price prediction graph.
BOS-SJU
BOS-PSE
BOS-BQN
BOS-MAZ
BOS-CPX
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 Puerto Rico
BOS-PR0
BOS-SJU
BOS-PSE
BOS-BQN
BOS-MAZ
How far ahead should I book a flight from Boston to Puerto Rico?
To ensure you get the cheapest price possible for a flight from Boston to Puerto Rico, you should look to book at least 46 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Boston to Puerto Rico?
Currently, March is the cheapest month in which you can book a flight from Boston to Puerto Rico (average of $274). Flying from Boston to Puerto Rico in September is currently the most expensive (average of $532). 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 PR?
Find hourly flight availability from Boston to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 17, 2026.
One of the essential ways to save on airfare from Boston to Puerto Rico is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 23% on airfare.
What is the cheapest day to fly from Boston to Puerto Rico?
Use this chart to determine the cheapest time to fly round-trip from Boston to Puerto Rico. Price data was last updated on May 16, 2026.
Travelers seeking maximum savings on their Boston to Puerto Rico flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Boston to Puerto Rico
Explore weekly flight availability from Boston to Puerto Rico. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 17, 2026.
The most flights from BOS to PR0 are scheduled on a Friday (12 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).
How often are flights from Boston to Puerto Rico delayed?
About 26% of weekly flights between Boston and Puerto Rico have experienced delays in the past year, with the average delay time being 153 minutes.
What is the most punctual flight time for Boston to Puerto Rico flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to Puerto Rico flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 17% of flights being delayed.
Reviews of airlines servicing Puerto Rico
Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated May 17, 2026.
See what other customers who have flown with Delta,United Airlines, andJetBlue from Boston to Puerto Rico have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.9
Entertainment
7.8
Comfort
7.8
Food
7.2
Boarding
8.1
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 Puerto Rico. 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.
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Alternative routes for Boston to Puerto Rico
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Puerto Rico by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Puerto Rico by cabin class
Find flights from Boston to Puerto Rico, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Puerto Rico flights
Browse other Boston and Puerto Rico flight options. Last updated on May 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from Boston to Puerto Rico
Discover the top 7 airlines that operate flights from Boston to Puerto Rico. 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 May 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$86 | Average$279 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$93 | Average$261 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$124 | Average$547 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$357 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$211 | Average$406 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$242 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$313 | Average$399 | FlexibilityNo cancel fee | On-time63% |