$147+ Cheap flights from San Juan to Boston (BOS)
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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BOS
Jun 25 — Jul 21
Round-trip
1 adult, Economy
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Find cheap flights from San Juan to Boston 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 San Juan to Boston Logan Intl are usually found in February or April, booked 42 days in advance, depart on a Thursday or Tuesday and return on a Wednesday
Cheap flight deals from San Juan to Boston
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Juan to BostonExplore the most affordable flight options available from San Juan to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 26, 2026.
Explore the most affordable flight options available from San Juan to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 26, 2026.
This SmartFares deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Thu 6/117:53 pm
SJU
- BOS
Nonstop4h 05m
JetBlue
Mon 6/159:44 pm
BOS
- SJU
Nonstop4h 00m
JetBlue
Deal found 5/25![JetBlue logo]()
$288
This JetBlue deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/118:50 pm
SJU
- BOS
Nonstop4h 05m
JetBlue
Fri 8/216:00 am
BOS
- SJU
Nonstop4h 00m
JetBlue
Deal found 5/25![JetBlue logo]()
$303
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/142:10 pm
SJU
- BOS
Nonstop4h 11m
Delta
Sun 8/166:05 am
BOS
- SJU
1 stop10h 28m
Delta
Deal found 5/25![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:41 pm
SJU
- BOS
1 stop7h 25m
Delta
Tue 9/156:00 am
BOS
- SJU
1 stop6h 13m
Delta
Deal found 5/21![Delta logo]()
$312
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:58 pm
SJU
- BOS
1 stop6h 55m
American Airlines
Wed 9/236:00 am
BOS
- SJU
2 stops9h 40m
American Airlines
Deal found 5/25![American Airlines logo]()
$317
This American Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:51 am
SJU
- BOS
1 stop13h 22m
American Airlines
Sun 8/2310:12 am
BOS
- SJU
1 stop14h 03m
American Airlines
Deal found 5/21![American Airlines logo]()
$318
This American Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:25 pm
SJU
- BOS
1 stop6h 44m
American Airlines
Tue 9/296:00 am
BOS
- SJU
2 stops8h 45m
American Airlines
Deal found 5/22![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
SJU
- BOS
1 stop8h 31m
American Airlines
Thu 9/36:10 pm
BOS
- SJU
1 stop15h 33m
American Airlines
Deal found 5/23![American Airlines logo]()
$320
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:24 pm
SJU
- BOS
1 stop14h 55m
American Airlines
Mon 8/316:00 am
BOS
- SJU
2 stops8h 51m
American Airlines
Deal found 5/25![American Airlines logo]()
$321
This CheapOair deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:07 pm
SJU
- BOS
Nonstop4h 06m
JetBlue
Fri 8/76:00 am
BOS
- SJU
Nonstop4h 00m
JetBlue
Deal found 5/22![JetBlue logo]()
$323
This American Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:14 pm
SJU
- BOS
1 stop14h 52m
American Airlines
Wed 8/511:35 am
BOS
- SJU
1 stop12h 24m
American Airlines
Deal found 5/22![American Airlines logo]()
$324
Best flights from San Juan to BostonDiscover carefully curated flight deals from San Juan to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 26, 2026.
Discover carefully curated flight deals from San Juan to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 26, 2026.
This JetBlue deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 9/34:55 pm
SJU
- BOS
Nonstop4h 05m
JetBlue
Thu 9/107:20 pm
BOS
- SJU
Nonstop4h 38m
JetBlue
Deal found 5/25![JetBlue logo]()
$303
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 am
SJU
- BOS
1 stop11h 27m
Delta
Tue 10/138:15 am
BOS
- SJU
Nonstop4h 06m
Delta
Deal found 5/21![Delta logo]()
$308
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 9/101:00 am
SJU
- BOS
1 stop8h 48m
United Airlines
Tue 9/156:00 am
BOS
- SJU
1 stop8h 44m
United Airlines
Deal found 5/25![United Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Wed 9/25:49 pm
SJU
- BOS
1 stop7h 36m
Delta
Tue 9/85:00 pm
BOS
- SJU
1 stop6h 59m
Delta
Deal found 5/25![Delta logo]()
$312
This JetBlue deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:01 am
SJU
- BOS
1 stop9h 40m
JetBlue
Tue 9/19:59 am
BOS
- SJU
Nonstop4h 01m
JetBlue
Deal found 5/22![JetBlue logo]()
$342
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 10/2912:46 pm
SJU
- BOS
1 stop12h 12m
Delta
Sun 11/13:34 pm
BOS
- SJU
1 stop8h 22m
Delta
Deal found 5/25![Delta logo]()
$312
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:41 pm
SJU
- BOS
1 stop7h 25m
Delta
Sun 9/276:00 am
BOS
- SJU
1 stop6h 13m
Delta
Deal found 5/22![Delta logo]()
$312
This JetBlue deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 10/247:35 pm
SJU
- BOS
Nonstop4h 08m
JetBlue
Wed 10/288:00 am
BOS
- SJU
1 stop7h 18m
JetBlue
Deal found 5/25![JetBlue logo]()
$382
This Delta deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” 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 7/42:05 pm
SJU
- BOS
Nonstop4h 09m
Delta
Fri 7/175:30 am
BOS
- SJU
1 stop7h 41m
Delta
Deal found 5/24![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:56 pm
SJU
- BOS
1 stop7h 24m
Delta
Tue 8/49:05 am
BOS
- SJU
1 stop7h 28m
Delta
Deal found 5/21![Delta logo]()
$352
Last-minute flights from San Juan to BostonDiscover last-minute flight deals from San Juan to Boston. Data last updated May 26, 2026 and is based on user searches.
Discover last-minute flight deals from San Juan to Boston. Data last updated May 26, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 6/55:01 am
SJU
- BOS
Nonstop4h 09m
JetBlue
Mon 6/85:40 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Deal found 5/25![JetBlue logo]()
$338
This JetBlue deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:01 am
SJU
- BOS
Nonstop4h 09m
JetBlue
Fri 6/55:40 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Deal found 5/21![JetBlue logo]()
$358
This JetBlue deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 6/101:27 pm
SJU
- BOS
Nonstop4h 06m
JetBlue
Sun 6/149:44 pm
BOS
- SJU
Nonstop4h 00m
JetBlue
Deal found 5/25![JetBlue logo]()
$303
This Travelocity deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Wed 6/105:15 pm
SJU
- BOS
1 stop8h 12m
Multiple Airlines
Sun 6/149:44 pm
BOS
- SJU
Nonstop4h 00m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$355
This SmartFares deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Thu 6/117:53 pm
SJU
- BOS
Nonstop4h 05m
JetBlue
Mon 6/159:44 pm
BOS
- SJU
Nonstop4h 00m
JetBlue
Deal found 5/25![JetBlue logo]()
$288
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/122:05 pm
SJU
- BOS
Nonstop4h 09m
Delta
Tue 8/49:05 am
BOS
- SJU
1 stop7h 28m
Delta
Deal found 5/22![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/122:05 pm
SJU
- BOS
Nonstop4h 09m
Delta
Sun 6/148:50 am
BOS
- SJU
Nonstop4h 04m
Delta
Deal found 5/22![Delta logo]()
$343
This Cheapflightsfares deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Sat 6/136:00 am
SJU
- BOS
Nonstop4h 07m
JetBlue
Tue 6/166:04 am
BOS
- SJU
1 stop9h 52m
JetBlue
Deal found 5/25![JetBlue logo]()
$347
This SmartFares deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/168:40 pm
SJU
- BOS
Nonstop4h 06m
JetBlue
Sat 7/45:29 pm
BOS
- SJU
1 stop7h 30m
JetBlue
Deal found 5/22![JetBlue logo]()
$327
One-way flights from San Juan to BostonSearch for one-way flight options from San Juan to Boston. Find affordable one-way fares based on user searches. Data last updated May 26, 2026.
Search for one-way flight options from San Juan to Boston. Find affordable one-way fares based on user searches. Data last updated May 26, 2026.
This SmartFares deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Tue 7/216:17 pm
SJU
- BOS
Nonstop4h 08m
JetBlue
Deal found 5/25![JetBlue logo]()
$147
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Sat 8/295:55 am
SJU
- BOS
1 stop8h 15m
Southwest
Deal found 5/25![Southwest logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 6/115:40 pm
SJU
- BOS
Nonstop4h 09m
JetBlue
Deal found 5/25![JetBlue logo]()
$157
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/182:05 pm
SJU
- BOS
Nonstop4h 09m
Delta
Deal found 5/21![Delta logo]()
$162
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:35 pm
SJU
- BOS
1 stop7h 23m
Delta
Deal found 5/21![Delta logo]()
$166
This Super.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:37 pm
SJU
- BOS
1 stop12h 32m
Frontier
Deal found 5/23![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/194:05 pm
SJU
- BOS
1 stop18h 04m
Frontier
Deal found 5/26![Frontier logo]()
$168
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 8/293:28 pm
SJU
- BOS
1 stop9h 30m
American Airlines
Deal found 5/25![American Airlines logo]()
$171
This Priceline deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Tue 7/213:36 pm
SJU
- BOS
1 stop19h 28m
Frontier
Deal found 5/25![Frontier logo]()
$174
This SmartFares deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Fri 7/1011:50 am
SJU
- BOS
1 stop6h 42m
JetBlue
Deal found 5/25![JetBlue logo]()
$176
This Frontier deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Thu 8/205:15 pm
SJU
- BOS
1 stop8h 12m
Frontier
Deal found 5/25![Frontier logo]()
$182
Find flight deals from San Juan to Boston
Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Boston (BOS). 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 May 26, 2026.
Round-trip from | $288 (SmartFares) |
|---|---|
One-way from | $147 (SmartFares) |
Popular in | May |
Cheapest in | February |
Average price | $334 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Juan to Boston 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 26, 2026.
Use the filters below to find and compare flights from San Juan to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 9/3
4:55 pm-9:00 pm
Nonstop4h 05m
Boston Logan Intl
Thu 9/10
7:20 pm-11:58 pm
Nonstop4h 38m
$303
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Tue 10/6
7:00 am-6:27 pm
1 stop11h 27m
Boston Logan Intl
Tue 10/13
8:15 am-12:21 pm
Nonstop4h 06m
$308
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 9/10
1:00 am-9:48 am
1 stop8h 48m
Boston Logan Intl
Tue 9/15
6:00 am-2:44 pm
1 stop8h 44m
$312
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 9/2
5:49 pm-1:25 am
1 stop7h 36m
Boston Logan Intl
Tue 9/8
5:00 pm-11:59 pm
1 stop6h 59m
$312
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 10/29
12:46 pm-12:58 am
1 stop12h 12m
Boston Logan Intl
Sun 11/1
3:34 pm-12:56 am
1 stop8h 22m
$312
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 9/24
5:41 pm-1:06 am
1 stop7h 25m
Boston Logan Intl
Sun 9/27
6:00 am-12:13 pm
1 stop6h 13m
$312
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 8/28
5:01 am-2:41 pm
1 stop9h 40m
Boston Logan Intl
Tue 9/1
9:59 am-2:00 pm
Nonstop4h 01m
$342
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Sat 7/4
2:05 pm-6:14 pm
Nonstop4h 09m
Boston Logan Intl
Fri 7/17
5:30 am-1:11 pm
1 stop7h 41m
$348
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Sat 7/25
5:56 pm-1:20 am
1 stop7h 24m
Boston Logan Intl
Tue 8/4
9:05 am-4:33 pm
1 stop7h 28m
$352
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Sat 10/24
7:35 pm-11:43 pm
Nonstop4h 08m
Boston Logan Intl
Wed 10/28
8:00 am-3:18 pm
1 stop7h 18m
$382
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from San Juan to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from San Juan with our price prediction graph.
PR1-BOS
SJU-BOS
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 San Juan to Boston
PR1-BOS
SJU-BOS
What is the cheapest month to book a flight from San Juan to Boston?
Currently, April is the cheapest month in which you can book a flight from San Juan to Boston (average of $55). Flying from San Juan to Boston in December is currently the most expensive (average of $583). 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 SJU to BOS?
Find hourly flight availability from San Juan to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 26, 2026.
When flying from San Juan to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 27% versus a flight at noon.
Weekly flight availability from San Juan to Boston
Explore weekly flight availability from San Juan to Boston. 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 26, 2026.
The most flights from PR1 to BOS are scheduled on a Tuesday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).
How much does it cost to fly round-trip from San Juan to Boston?
How often are flights from San Juan to Boston delayed?
About 19% of weekly flights between San Juan and Boston have experienced delays in the past year, with the average delay time being 160 minutes.
What is the most punctual flight time for San Juan to Boston flights?
Historically, flights departing at night 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 Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Juan to Boston flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 12% of flights being delayed.
How far ahead should I book a flight from San Juan to Boston?
The price you pay for your flight from San Juan to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from San Juan to Boston?
Use this chart to determine the cheapest time to fly round-trip from San Juan to Boston. Price data was last updated on May 23, 2026.
Travelers seeking maximum savings on their San Juan to Boston flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated May 26, 2026.
See what other customers who have flown with Delta,JetBlue, andSpirit Airlines from San Juan to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Spirit Airlines
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Food
7.2
Overall
7.9
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Related info for your journey
Find useful and relevant information for your journey from San Juan to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Cambridge
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York Beach
Londonderry
Swansea
Old Orchard Beach
Auburn
Lowell
Smithfield
Braintree
Sandwich
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Top 4 airlines flying from San Juan to Boston
Discover the top 4 airlines that operate flights from San Juan to Boston. 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 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$86 | Average$191 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$95 | Average$212 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$123 | Average$296 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$143 | Average$322 | FlexibilityNo cancel fee | On-time62% |