$169+ Cheap flights from Boston (BOS) to San Juan
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SJU
Dec 3 — Dec 101
Round-trip
1 adult, Economy
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Find cheap flights from Boston to San Juan 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.Cheapflights Tip: The best prices from Boston Logan Intl to San Juan are usually found in January or March, booked 60 days in advance, depart on a Tuesday or Monday and return on a Friday
Cheap flight deals from Boston to San Juan
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to San JuanExplore the most affordable flight options available from Boston to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
Explore the most affordable flight options available from Boston to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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.
Thu 12/1011:08 am -
2 stops12h 59m
Thu 12/176:11 am -
Nonstop4h 19m
Deal found 10/30![Frontier logo]()
$290
This JetBlue deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/176:00 am -
1 stop7h 33m
Sat 11/215:01 am -
Nonstop4h 12m
Deal found 10/29![JetBlue logo]()
$291
This Super.com deal was found by Cheapflights users on 11/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:30 pm -
1 stop6h 22m
Tue 12/158:00 am -
1 stop7h 40m
Deal found 11/1![JetBlue logo]()
$292
This Super.com deal was found by Cheapflights users on 10/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/73:59 pm -
1 stop9h 00m
Thu 12/105:01 am -
1 stop9h 04m
Deal found 10/31![JetBlue logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/411:57 am -
2 stops26h 02m
Sun 12/206:11 am -
Nonstop4h 19m
Deal found 10/30![Frontier logo]()
$294
This Super.com deal was found by Cheapflights users on 10/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1710:25 am -
Nonstop4h 05m
Sun 12/206:11 am -
Nonstop4h 19m
Deal found 10/31![Frontier logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/1011:08 am -
2 stops12h 59m
Fri 12/186:11 am -
Nonstop4h 19m
Deal found 10/30![Frontier logo]()
$297
This Super.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:59 pm -
1 stop9h 00m
Wed 12/95:01 am -
1 stop7h 29m
Deal found 10/29![JetBlue logo]()
$298
This JetBlue deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/305:01 am -
Nonstop4h 01m
Fri 12/45:01 am -
1 stop7h 29m
Deal found 10/30![JetBlue logo]()
$300
This JetBlue deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/88:42 am -
Nonstop4h 08m
Sun 12/205:01 am -
1 stop7h 11m
Deal found 10/30![JetBlue logo]()
$301
This Cheapflightsfares deal was found by Cheapflights users on 10/31. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3110:25 am -
Nonstop4h 05m
Thu 1/711:26 pm -
1 stop10h 40m
Deal found 10/31![Frontier logo]()
$302
Best flights from Boston to San JuanDiscover carefully curated flight deals from Boston to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
Discover carefully curated flight deals from Boston to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
This Delta deal was found by Cheapflights users on 10/31. 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 11/178:40 am -
Nonstop4h 03m
Sat 11/212:55 pm -
Nonstop4h 16m
Deal found 10/31![Delta logo]()
$347
This JetBlue deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/134:09 pm -
1 stop7h 21m
Wed 11/188:39 pm -
Nonstop4h 20m
Deal found 10/29![JetBlue logo]()
$389
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” 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 11/223:41 pm -
1 stop7h 55m
Thu 11/262:05 am -
1 stop8h 12m
Deal found 10/28![United Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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.
Sun 1/1712:50 pm -
2 stops10h 45m
Thu 1/216:05 am -
1 stop7h 20m
Deal found 10/29![Southwest logo]()
$444
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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.
Sun 1/318:06 am -
Nonstop4h 10m
Sun 2/77:17 am -
1 stop8h 18m
Deal found 10/29![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/129:12 am -
2 stops12h 10m
Tue 11/177:40 am -
2 stops15h 19m
Deal found 10/29![United Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 11/1. 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.
Mon 12/78:35 am -
Nonstop4h 07m
Fri 12/112:53 pm -
Nonstop4h 22m
Deal found 11/1![Delta logo]()
$387
This JetBlue deal was found by Cheapflights users on 10/31. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/232:21 pm -
Nonstop4h 04m
Sun 1/316:01 am -
Nonstop4h 14m
Deal found 10/31![JetBlue logo]()
$446
This Southwest deal was found by Cheapflights users on 11/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/81:15 pm -
2 stops10h 20m
Wed 1/137:25 am -
2 stops9h 40m
Deal found 11/1![Southwest logo]()
$460
This Delta deal was found by Cheapflights users on 11/1. 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.
Mon 1/188:06 am -
Nonstop4h 10m
Sun 1/247:17 am -
1 stop8h 18m
Deal found 11/1![Delta logo]()
$392
This Delta deal was found by Cheapflights users on 10/31. 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.
Thu 1/218:06 am -
Nonstop4h 10m
Sun 1/247:17 am -
1 stop8h 18m
Deal found 10/31![Delta logo]()
$452
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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.
Sun 1/248:06 am -
Nonstop4h 10m
Sun 1/317:17 am -
1 stop8h 18m
Deal found 10/30![Delta logo]()
$454
Last-minute flights from Boston to San JuanDiscover last-minute flight deals from Boston to San Juan. Data last updated November 3, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Juan. Data last updated November 3, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop14h 29m
Fri 11/137:05 am -
1 stop11h 30m
Deal found 10/29![American Airlines logo]()
$305
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/139:43 am -
1 stop10h 41m
Fri 11/132:05 am -
1 stop6h 38m
Deal found 10/29![United Airlines logo]()
$316
This JetBlue deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/141:00 pm -
1 stop6h 48m
Sat 11/215:01 am -
Nonstop4h 12m
Deal found 10/29![JetBlue logo]()
$306
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/1412:00 pm -
2 stops9h 22m
Fri 11/202:05 am -
1 stop6h 38m
Deal found 10/30![United Airlines logo]()
$310
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:08 pm -
Nonstop4h 05m
Fri 11/2010:21 pm -
1 stop12h 50m
Deal found 10/29![Multiple Airlines logo]()
$317
This JetBlue deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/158:08 pm -
Nonstop4h 05m
Sat 11/218:45 pm -
Nonstop4h 13m
Deal found 10/30![JetBlue logo]()
$301
This JetBlue deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/176:00 am -
1 stop7h 33m
Sat 11/215:01 am -
Nonstop4h 12m
Deal found 10/29![JetBlue logo]()
$291
This JetBlue deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/178:08 pm -
Nonstop4h 05m
Wed 11/187:00 am -
Nonstop4h 13m
Deal found 10/29![JetBlue logo]()
$296
This CheapOair deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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.
Sun 11/2211:06 am -
1 stop14h 18m
Thu 11/265:01 am -
Nonstop4h 12m
Deal found 10/29![Multiple Airlines logo]()
$314
This CheapOair deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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.
Sun 11/2211:06 am -
1 stop14h 18m
Wed 11/258:45 pm -
Nonstop4h 13m
Deal found 10/30![Multiple Airlines logo]()
$319
This CheapOair deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/277:35 pm -
Nonstop4h 05m
Thu 12/33:43 am -
1 stop7h 28m
Deal found 10/30![Multiple Airlines logo]()
$313
This JetBlue deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/305:01 am -
Nonstop4h 01m
Fri 12/45:01 am -
1 stop7h 29m
Deal found 10/30![JetBlue logo]()
$300
One-way flights from Boston to San JuanSearch for one-way flight options from Boston to San Juan. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
Search for one-way flight options from Boston to San Juan. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
This Booking.com deal was found by Cheapflights users on 11/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1211:08 am -
1 stop11h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$169
This Super.com deal was found by Cheapflights users on 11/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:05 pm -
1 stop7h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![JetBlue logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1010:01 am -
2 stops14h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/1812:39 pm -
1 stop11h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/411:57 am -
2 stops26h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Frontier logo]()
$173
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Thu 12/311:57 am -
1 stop12h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$175
This Frontier deal was found by Cheapflights users on 11/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/1610:24 am -
1 stop10h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$177
This Super.com deal was found by Cheapflights users on 11/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:42 am -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![JetBlue logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2810:29 am -
1 stop25h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$182
Find flight deals from Boston to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 3, 2026.
Round-trip from | $288 (CheapOair) |
|---|---|
One-way from | $169 (Booking.com) |
Popular in | July |
Cheapest in | January |
Average price | $414 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to San Juan 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 November 3, 2026.
Use the filters below to find and compare flights from Boston to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Mon 11/23
8:40 am-1:43 pm
Nonstop4h 03m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$197
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Sun 12/6
2:25 pm-1:10 am
1 stop9h 45m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$198
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Tue 12/15
3:30 pm-11:25 pm
1 stop6h 55m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$198
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Wed 1/27
2:40 pm-11:29 pm
1 stop7h 49m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$203
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Fri 1/15
1:10 pm-12:58 am
1 stop10h 48m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$203
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Sat 1/2
6:52 pm-11:59 pm
Nonstop4h 07m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$205
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Thu 1/21
1:10 pm-12:58 am
1 stop10h 48m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$208
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Thu 12/31
5:00 pm-2:43 am
1 stop8h 43m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$209
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Sat 12/12
2:21 pm-7:27 pm
Nonstop4h 06m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$222
BostonSan Juan
BOS Boston Logan Intl - SJU San Juan Luis Munoz Marin Intl
BOSSJU
Boston Logan Intl
Thu 12/31
5:00 pm-6:15 am
2 stops12h 15m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$228
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Boston to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Boston with our price prediction graph.
BOS-PR1
BOS-SJU
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 San Juan
BOS-PR1
BOS-SJU
What is the cheapest month to book a flight from Boston to San Juan?
Currently, January is the cheapest month in which you can book a flight from Boston to San Juan (average of $300). Flying from Boston to San Juan in July is currently the most expensive (average of $463). 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 SJU?
Find hourly flight availability from Boston to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2026.
A simple way to save on the total cost of your ticket is to fly from Boston to San Juan at noon. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight in the morning.
Weekly flight availability from Boston to San Juan
Explore weekly flight availability from Boston to San Juan. 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 November 3, 2026.
The most flights from BOS to PR1 are scheduled on a Sunday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Boston to San Juan?
Airfare is below average for this route at the moment.
Boston to San Juan flights typically cost between $327 and $533 in January.The cheapest round-trip price found within the last 5 days was $288 on Multiple Airlines (Jan 11-Jan 15).
How often are flights from Boston to San Juan delayed?
About 27% of weekly flights between Boston and San Juan have experienced delays in the past year, with the average delay time being 156 minutes.
What is the most punctual flight time for Boston to San Juan 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?
Tuesday 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 San Juan flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 19% of flights being delayed.
How far ahead should I book a flight from Boston to San Juan?
The best time to book flights from Boston to San Juan is 59 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Boston to San Juan?
Use this chart to determine the cheapest time to fly round-trip from Boston to San Juan. Price data was last updated on October 31, 2026.
Travelers seeking maximum savings on their Boston to San Juan flight should consider departing on Sunday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated November 3, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andJetBlue from Boston to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Entertainment
7.8
Overall
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 San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Top 6 airlines flying from Boston to San Juan
Discover the top 6 airlines that operate flights from Boston to San Juan. 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 November 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$315 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$124 | Average$585 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$164 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$212 | Average$398 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$259 | Average$466 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$394 | Average$541 | FlexibilityNo cancel fee | On-time63% |