$57 Cheap Flights from San Juan (SJU) to Boston (BOS)

View $57 flight on Sun, Dec 21, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $57 for one-way flights and $139 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sun, Dec 21 - Sun, Jan 4
SJU
San Juan
BOS
Boston
$139 Roundtrip, found 18 hours ago
$139
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Sun, Dec 21 from San Juan to Boston, returning Sun, Jan 4, priced at $139 found 18 hours ago
Frontier Airlines
Thu, Dec 25 - Sun, Jan 4
SJU
San Juan
BOS
Boston
$144 Roundtrip, found 5 hours ago
$144
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Dec 25 from San Juan to Boston, returning Sun, Jan 4, priced at $144 found 5 hours ago
Frontier Airlines
Thu, Dec 25 - Mon, Jan 12
SJU
San Juan
BOS
Boston
$145 Roundtrip, found 2 hours ago
$145
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Dec 25 from San Juan to Boston, returning Mon, Jan 12, priced at $145 found 2 hours ago
Frontier Airlines
Thu, Dec 25 - Sun, Jan 4
SJU
San Juan
BOS
Boston
$146 Roundtrip, found 5 hours ago
$146
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Dec 25 from San Juan to Boston, returning Sun, Jan 4, priced at $146 found 5 hours ago
Frontier Airlines
Thu, Dec 25 - Sun, Jan 11
SJU
San Juan
BOS
Boston
$149 Roundtrip, found 3 days ago
$149
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Dec 25 from San Juan to Boston, returning Sun, Jan 11, priced at $149 found 3 days ago
Frontier Airlines
Sun, Dec 21 - Sat, Jan 10
SJU
San Juan
BOS
Boston
$152 Roundtrip, found 1 day ago
$152
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Dec 21 from San Juan to Boston, returning Sat, Jan 10, priced at $152 found 1 day ago
Spirit Airlines
Wed, Feb 25 - Sun, Mar 1
SJU
San Juan
BOS
Boston
$170 Roundtrip, found 8 hours ago
$170
Roundtrip
found 8 hours ago
Select Spirit Airlines flight, departing Wed, Feb 25 from San Juan to Boston, returning Sun, Mar 1, priced at $170 found 8 hours ago
JetBlue Airways
Wed, Dec 24 - Thu, Jan 1
SJU
San Juan
BOS
Boston
$238 Roundtrip, found 8 hours ago
$238
Roundtrip
found 8 hours ago
Select JetBlue Airways flight, departing Wed, Dec 24 from San Juan to Boston, returning Thu, Jan 1, priced at $238 found 8 hours ago
United
Wed, Dec 24 - Wed, Dec 31
SJU
San Juan
BOS
Boston
$247 Roundtrip, found 11 hours ago
$247
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Dec 24 from San Juan to Boston, returning Wed, Dec 31, priced at $247 found 11 hours ago
Delta
Thu, Dec 25 - Mon, Jan 12
SJU
San Juan
BOS
Boston
$250 Roundtrip, found 2 hours ago
$250
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Dec 25 from San Juan to Boston, returning Mon, Jan 12, priced at $250 found 2 hours ago

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

January is typically the cheapest month to fly

From $100 - $438 per traveler.

Alternative airports near Boston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Logan Intl. BOS. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $285
BOS
Logan Intl.
CheapestClosest
Average driving time to city center7 min
Flights from $285

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) cost?
Lock in a cheap one-way flight from $57 or cheap return flight from $139 from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
December is the least expensive month to fly from SJU to BOS. Planning your trip for the off-season is often the key to better flight prices.
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 Luis Munoz Marin Intl. Airport (SJU) to Logan Intl. Airport (BOS)?
While prices can change depending on your travel dates, Frontier Airlines and Delta Air Lines are popular choices for flights between Luis Munoz Marin Intl. Airport (SJU) and Logan Intl. Airport (BOS). You can also compare airlines on Expedia and use the "Sort by" filter to find the cheapest ticket for your SJU to BOS flight.
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.

Travel information

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
$139
Distance
1679 mi
Average flight time
3 hours 11 mins

Book with confidence

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 December. 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 $57 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.

 

San Juan to Boston Flights

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*Available to One Key members.