$98+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BOS
Apr 29 — May 61
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 Friday 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 March 30, 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 March 30, 2026.
This Trip.com deal was found by Cheapflights users on 3/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
SJU
- BOS
Nonstop4h 16m
Multiple Airlines
Tue 4/73:23 pm
BOS
- SJU
Nonstop3h 56m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$143
This Frontier deal was found by Cheapflights users on 3/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
SJU
- BOS
Nonstop4h 16m
Frontier
Tue 4/711:18 am
BOS
- SJU
Nonstop3h 59m
Frontier
Deal found 3/28![Frontier logo]()
$144
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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 4/410:00 am
SJU
- BOS
Nonstop4h 18m
Spirit Airlines
Sun 4/123:23 pm
BOS
- SJU
Nonstop3h 56m
Spirit Airlines
Deal found 3/25![Spirit Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
SJU
- BOS
Nonstop4h 16m
Multiple Airlines
Sat 4/43:23 pm
BOS
- SJU
Nonstop3h 56m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$146
This Super.com deal was found by Cheapflights users on 3/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
SJU
- BOS
Nonstop4h 16m
Frontier
Thu 4/911:18 am
BOS
- SJU
Nonstop3h 59m
Frontier
Deal found 3/30![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 4/96:00 am
SJU
- BOS
Nonstop4h 16m
Multiple Airlines
Sun 4/123:23 pm
BOS
- SJU
Nonstop3h 56m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$150
This eDestinos deal was found by Cheapflights users on 3/26. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:00 am
SJU
- BOS
Nonstop4h 18m
Spirit Airlines
Sun 4/126:01 am
BOS
- SJU
1 stop17h 57m
Spirit Airlines
Deal found 3/26![Spirit Airlines logo]()
$151
This Priceline deal was found by Cheapflights users on 3/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/31:45 am
SJU
- BOS
1 stop8h 09m
Spirit Airlines
Tue 4/73:23 pm
BOS
- SJU
Nonstop3h 56m
Spirit Airlines
Deal found 3/30![Spirit Airlines logo]()
$156
This Priceline deal was found by Cheapflights users on 3/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:16 am
SJU
- BOS
1 stop7h 15m
Frontier
Sun 4/1211:18 am
BOS
- SJU
Nonstop3h 59m
Frontier
Deal found 3/26![Frontier logo]()
$157
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 March 30, 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 March 30, 2026.
This Delta deal was found by Cheapflights users on 3/29. 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.
Fri 6/52:00 pm
SJU
- BOS
Nonstop4h 18m
Delta
Sun 6/76:06 am
BOS
- SJU
1 stop10h 23m
Delta
Deal found 3/29![Delta logo]()
$308
This JetBlue deal was found by Cheapflights users on 3/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:20 pm
SJU
- BOS
Nonstop4h 04m
JetBlue
Mon 4/136:05 am
BOS
- SJU
1 stop9h 39m
JetBlue
Deal found 3/26![JetBlue logo]()
$372
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Fri 4/31:00 am
SJU
- BOS
2 stops9h 04m
United Airlines
Tue 4/711:17 am
BOS
- SJU
2 stops10h 07m
United Airlines
Deal found 3/30![United Airlines logo]()
$373
This Southwest deal was found by Cheapflights users on 3/29. 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.
Thu 5/72:00 pm
SJU
- BOS
2 stops9h 55m
Southwest
Mon 5/117:25 pm
BOS
- SJU
2 stops15h 10m
Southwest
Deal found 3/29![Southwest logo]()
$384
This Delta deal was found by Cheapflights users on 3/30. 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.
Thu 6/42:00 pm
SJU
- BOS
Nonstop4h 18m
Delta
Mon 6/86:06 am
BOS
- SJU
1 stop10h 23m
Delta
Deal found 3/30![Delta logo]()
$308
This JetBlue deal was found by Cheapflights users on 3/25. 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 4/225:01 am
SJU
- BOS
Nonstop4h 11m
JetBlue
Tue 5/512:45 pm
BOS
- SJU
Nonstop4h 02m
JetBlue
Deal found 3/25![JetBlue logo]()
$379
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 4/21:00 am
SJU
- BOS
1 stop8h 11m
United Airlines
Wed 4/810:05 am
BOS
- SJU
2 stops11h 19m
United Airlines
Deal found 3/27![United Airlines logo]()
$402
This JetBlue deal was found by Cheapflights users on 3/25. 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 4/225:01 am
SJU
- BOS
Nonstop4h 11m
JetBlue
Thu 5/710:40 pm
BOS
- SJU
Nonstop4h 01m
JetBlue
Deal found 3/25![JetBlue logo]()
$379
This Delta deal was found by Cheapflights users on 3/29. 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.
Wed 6/172:05 pm
SJU
- BOS
Nonstop4h 09m
Delta
Tue 6/308:50 am
BOS
- SJU
Nonstop4h 04m
Delta
Deal found 3/29![Delta logo]()
$394
This Delta deal was found by Cheapflights users on 3/30. 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.
Thu 5/282:00 pm
SJU
- BOS
Nonstop4h 18m
Delta
Sat 5/308:50 am
BOS
- SJU
Nonstop3h 59m
Delta
Deal found 3/30![Delta logo]()
$397
Last-minute flights from San Juan to BostonDiscover last-minute flight deals from San Juan to Boston. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from San Juan to Boston. Data last updated March 30, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 3/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
SJU
- BOS
Nonstop4h 16m
Frontier
Thu 4/911:18 am
BOS
- SJU
Nonstop3h 59m
Frontier
Deal found 3/30![Frontier logo]()
$149
This Priceline deal was found by Cheapflights users on 3/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/31:45 am
SJU
- BOS
1 stop8h 09m
Spirit Airlines
Tue 4/73:23 pm
BOS
- SJU
Nonstop3h 56m
Spirit Airlines
Deal found 3/30![Spirit Airlines logo]()
$156
This Trip.com deal was found by Cheapflights users on 3/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
SJU
- BOS
Nonstop4h 16m
Multiple Airlines
Tue 4/73:23 pm
BOS
- SJU
Nonstop3h 56m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$143
This Frontier deal was found by Cheapflights users on 3/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
SJU
- BOS
Nonstop4h 16m
Frontier
Tue 4/711:18 am
BOS
- SJU
Nonstop3h 59m
Frontier
Deal found 3/28![Frontier logo]()
$144
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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 4/410:00 am
SJU
- BOS
Nonstop4h 18m
Spirit Airlines
Sun 4/123:23 pm
BOS
- SJU
Nonstop3h 56m
Spirit Airlines
Deal found 3/25![Spirit Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:00 am
SJU
- BOS
Nonstop4h 16m
Multiple Airlines
Sat 4/43:23 pm
BOS
- SJU
Nonstop3h 56m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$146
This Priceline deal was found by Cheapflights users on 3/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:16 am
SJU
- BOS
1 stop7h 15m
Frontier
Sun 4/1211:18 am
BOS
- SJU
Nonstop3h 59m
Frontier
Deal found 3/26![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” 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 4/96:00 am
SJU
- BOS
Nonstop4h 16m
Multiple Airlines
Sun 4/123:23 pm
BOS
- SJU
Nonstop3h 56m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$150
This eDestinos deal was found by Cheapflights users on 3/26. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:00 am
SJU
- BOS
Nonstop4h 18m
Spirit Airlines
Sun 4/126:01 am
BOS
- SJU
1 stop17h 57m
Spirit Airlines
Deal found 3/26![Spirit Airlines logo]()
$151
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 March 30, 2026.
Search for one-way flight options from San Juan to Boston. Find affordable one-way fares based on user searches. Data last updated March 30, 2026.
This CheapOair deal was found by Cheapflights users on 3/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:16 am
SJU
- BOS
1 stop7h 15m
Frontier
Deal found 3/25![Frontier logo]()
$98
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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.
Wed 4/87:00 am
SJU
- BOS
1 stop9h 54m
Spirit Airlines
Deal found 3/25![Spirit Airlines logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:25 am
SJU
- BOS
Nonstop4h 07m
Spirit Airlines
Deal found 3/30![Spirit Airlines logo]()
$100
This CheapOair deal was found by Cheapflights users on 3/26. 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.
Fri 4/1710:25 am
SJU
- BOS
Nonstop4h 07m
Spirit Airlines
Deal found 3/26![Spirit Airlines logo]()
$101
This Super.com deal was found by Cheapflights users on 3/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/173:19 pm
SJU
- BOS
1 stop19h 02m
Frontier
Deal found 3/30![Frontier logo]()
$102
This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:57 pm
SJU
- BOS
1 stop11h 00m
Spirit Airlines
Deal found 3/28![Spirit Airlines logo]()
$103
This Super.com deal was found by Cheapflights users on 3/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:23 pm
SJU
- BOS
1 stop10h 08m
Frontier
Deal found 3/26![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 3/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:15 pm
SJU
- BOS
1 stop14h 30m
Frontier
Deal found 3/30![Frontier logo]()
$106
This eDestinos deal was found by Cheapflights users on 3/29. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/31:45 am
SJU
- BOS
1 stop8h 09m
Spirit Airlines
Deal found 3/29![Spirit Airlines logo]()
$107
This eDestinos deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:00 am
SJU
- BOS
Nonstop4h 18m
Spirit Airlines
Deal found 3/27![Spirit Airlines logo]()
$109
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 March 30, 2026.
Round-trip from | $143 (Trip.com) |
|---|---|
One-way from | $98 (CheapOair) |
Popular in | July |
Cheapest in | February |
Average price | $269 |
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 March 30, 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
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 6/5
2:00 pm-6:18 pm
Nonstop4h 18m
Boston Logan Intl
Sun 6/7
6:06 am-4:29 pm
1 stop10h 23m
$308
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 6/4
2:00 pm-6:18 pm
Nonstop4h 18m
Boston Logan Intl
Mon 6/8
6:06 am-4:29 pm
1 stop10h 23m
$308
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 4/10
8:20 pm-12:24 am
Nonstop4h 04m
Boston Logan Intl
Mon 4/13
6:05 am-3:44 pm
1 stop9h 39m
$372
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Fri 4/3
1:00 am-10:04 am
2 stops9h 04m
Boston Logan Intl
Tue 4/7
11:17 am-9:24 pm
2 stops10h 07m
$373
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 4/22
5:01 am-9:12 am
Nonstop4h 11m
Boston Logan Intl
Tue 5/5
12:45 pm-4:47 pm
Nonstop4h 02m
$379
Quickest round-trip
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 4/22
5:01 am-9:12 am
Nonstop4h 11m
Boston Logan Intl
Thu 5/7
10:40 pm-2:41 am
Nonstop4h 01m
$379
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 5/7
2:00 pm-11:55 pm
2 stops9h 55m
Boston Logan Intl
Mon 5/11
7:25 pm-10:35 am
2 stops15h 10m
$384
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Wed 6/17
2:05 pm-6:14 pm
Nonstop4h 09m
Boston Logan Intl
Tue 6/30
8:50 am-12:54 pm
Nonstop4h 04m
$394
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 5/28
2:00 pm-6:18 pm
Nonstop4h 18m
Boston Logan Intl
Sat 5/30
8:50 am-12:49 pm
Nonstop3h 59m
$397
San JuanBoston
SJU - BOS
SJUBOS
San Juan Luis Munoz Marin Intl
Thu 4/2
1:00 am-9:11 am
1 stop8h 11m
Boston Logan Intl
Wed 4/8
10:05 am-9:24 pm
2 stops11h 19m
$402
Showing 1-10 of 22 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
How far ahead should I book a flight from San Juan to Boston?
Use this chart to determine the optimal time to book a round-trip flight from San Juan to Boston. Price data was last updated on March 13, 2026.
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 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from San Juan to Boston?
Currently, December is the cheapest month in which you can book a flight from San Juan to Boston (average of $93). Flying from San Juan to Boston in July is currently the most expensive (average of $144). 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 March 30, 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 18% versus a flight at noon.
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 March 28, 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.
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 March 30, 2026.
The most flights from PR1 to BOS are scheduled on a Monday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 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 18% of weekly flights between San Juan and Boston have experienced delays in the past year, with the average delay time being 165 minutes.
What is the most punctual flight time for San Juan to Boston 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 Monday 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 11% of flights being delayed.
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 March 30, 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.
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Food
7.2
Crew
8.5
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from 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.
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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 March 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$86 | Average$193 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$94 | Average$212 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$126 | Average$279 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$141 | Average$310 | FlexibilityNo cancel fee | On-time62% |