$78 Cheap Flights from San Juan (SJU) to Boston (BOS)

View $78 flight on Thu, Jul 31, 2025Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to Logan International Airport (BOS)

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Cheap Flights from San Juan to Boston (SJU-BOS)

Prices were available within the past 7 days and start at $78 for one-way flights and $156 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Jul 31 - Sun, Aug 3
SJU
San Juan
BOS
Boston
$156 Roundtrip, found 1 hour ago
$156
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Thu, Jul 31 from San Juan to Boston, returning Sun, Aug 3, priced at $156 found 1 hour ago
Spirit Airlines
Thu, Jul 31 - Mon, Aug 4
SJU
San Juan
BOS
Boston
$177 Roundtrip, just found
$177
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Jul 31 from San Juan to Boston, returning Mon, Aug 4, priced at $177 just found
Spirit Airlines
Thu, Jul 31 - Wed, Aug 6
SJU
San Juan
BOS
Boston
$184 Roundtrip, just found
$184
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Jul 31 from San Juan to Boston, returning Wed, Aug 6, priced at $184 just found
Spirit Airlines
Tue, Aug 5 - Sat, Aug 9
SJU
San Juan
BOS
Boston
$185 Roundtrip, just found
$185
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, Aug 5 from San Juan to Boston, returning Sat, Aug 9, priced at $185 just found
Spirit Airlines
Thu, Sep 11 - Sun, Sep 14
SJU
San Juan
BOS
Boston
$197 Roundtrip, just found
$197
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Sep 11 from San Juan to Boston, returning Sun, Sep 14, priced at $197 just found
Spirit Airlines
Thu, Jul 31 - Wed, Aug 6
SJU
San Juan
BOS
Boston
$204 Roundtrip, just found
$204
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Jul 31 from San Juan to Boston, returning Wed, Aug 6, priced at $204 just found
Frontier Airlines
Thu, Jul 31 - Sun, Aug 3
SJU
San Juan
BOS
Boston
$218 Roundtrip, found 1 hour ago
$218
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Jul 31 from San Juan to Boston, returning Sun, Aug 3, priced at $218 found 1 hour ago
Southwest Airlines
Thu, Sep 11 - Sun, Sep 14
SJU
San Juan
BOS
Boston
$225 Roundtrip, just found
$225
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Sep 11 from San Juan to Boston, returning Sun, Sep 14, priced at $225 just found
Delta
Thu, Sep 11 - Sun, Sep 14
SJU
San Juan
BOS
Boston
$231 Roundtrip, just found
$231
Roundtrip
just found
Select Delta flight, departing Thu, Sep 11 from San Juan to Boston, returning Sun, Sep 14, priced at $231 just found
JetBlue Airways
Fri, Sep 12 - Mon, Sep 15
SJU
San Juan
BOS
Boston
$244 Roundtrip, just found
$244
Roundtrip
just found
Select JetBlue Airways flight, departing Fri, Sep 12 from San Juan to Boston, returning Mon, Sep 15, priced at $244 just found

Find the cheapest month to fly from San Juan (SJU) to Boston (BOS)

August is typically the cheapest month to fly

From $98 - $269 per traveler.

Graph displaying average flight prices per month

Flights from San Juan (SJU) to Boston (BOS)
Origin airport
Luis Munoz Marin Intl.
Destination airport
Logan Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$156
Distance
1679 mi
Average flight time
4 hours 8 mins

San Juan to Boston Flights

The cheapest times to fly from San Juan to Boston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Juan to Boston are during the month of July. You can find some of the cheapest flights from San Juan to Boston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Juan to Boston

Sunday is one of the best days to book for cheap flights from San Juan to Boston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Juan to Boston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Juan to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $78 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Juan to Boston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Juan to Boston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) cost?
Cheap round-trip fares from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) start from $188. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Spirit Airlines flight leaving SJU on July 27 2025 and touching down at BOS. The price was last updated on July 1 2025 and has not changed since.
What is the cheapest month to fly from SJU to BOS?
The cheapest flights from SJU to BOS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
Fly straight to Logan Intl. Airport (BOS). 3 airlines offer direct routes from Luis Munoz Marin Intl. Airport (SJU), including:

  • JetBlue Airways
  • Delta Air Lines
  • Frontier Airlines

What is the cheapest airline that flies from SJU to BOS?
At the moment, the cheapest carrier offering one-way flights from SJU to BOS is Spirit Airlines. You can book a seat on this route from $110. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SJU on August 7 2025. Prices were last updated on July 1 2025 and have not changed since.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
With, on average, 5 direct flights that operate from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) every day, you'll be soaring through the skies in no time.
What are the most popular departure times for flights from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
Flights between SJU and BOS are busiest at 2 PM. For a more relaxed atmosphere and possibly cheaper fares, look for a departure outside the usual busy windows.
What day of the week has the most flights from SJU to BOS?
If you jet off on a Saturday, you'll get the biggest range of choices for flights from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS).
What is the earliest flight from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
The earliest flight leaving from Luis Munoz Marin Intl. Airport (SJU) is at around 5:00AM UTC-4. Hop on this flight and you'll reach Logan Intl. Airport (BOS) at approximately 8:17AM UTC-5. The entire trip takes 4h 17m.
How long does it take to fly from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
The average flight time from SJU to BOS is 4 hours and 21 minutes, covering a distance of 1,700 mi.
What airline has the least delays from SJU to BOS?
Consider traveling with Spirit Airlines if you'd like to go straight from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) without any interruptions. This carrier has the best track record for punctuality, with an on-time performance of 100%. Want to be notified if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
To avoid potential delays on the Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) route, travel before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Boston from Luis Munoz Marin Intl. Airport (SJU)?
Catch a direct flight from Luis Munoz Marin Intl. Airport (SJU) to Boston and arrive at Logan Intl. Airport (BOS). Another arrival point to this city is T.F. Green Airport (PVD).
Is it cheaper to buy a plane ticket from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) last-minute?
Last-minute bookings from SJU to BOS are generally more expensive. To lock in the cheapest rates, start searching for flights ahead of time. That being said, if you're flexible with your travel plans, you may land a cheap fare right before your journey.
Is it cheaper to book a SJU to BOS flight and hotel package?
Compared with arranging flights and hotels separately, booking a SJU to BOS flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place takes the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
Usually, it's possible to reschedule or cancel your SJU to BOS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

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