BOS - SJU

Find Cheap Flights from Boston to San Juan

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Juan, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Juan, as well as popular online travel agencies
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 26% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
Multiple Airlines
Fri 12/12
BOS - SJU • multi-stop
Cheapest one-way flight
Multiple Airlines
Fri 12/12
BOS - SJU • multi-stop
Our travellers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
JetBlue offers free Wi-Fi and live TV for all passengers.
Frontier's carry-on bags have fees; pay early to save.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 12% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 21% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San Juan!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Boston to San Juan that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boston to San Juan

Multiple Airlines Logo
BOS
-
SJU
1678 mimulti-stop
Multiple Airlines Logo
SJU
-
BOS
1678 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to San Juan flights

Get data-powered insights and trends into flights from Boston to San Juan to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boston to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to San Juan Luis Munoz Marin Intl Airport is January, where tickets cost £181 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is £290 and £270 respectively.

How far in advance should I book a flight from Boston to San Juan Luis Munoz Marin Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to San Juan Luis Munoz Marin Intl Airport, you should book around 2 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Find deals
Expert advice

Expert advice for your flight from Boston to San Juan

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Frontier

Frontier’s Premium Bundle includes priority boarding and extra legroom for just CA$27 more.


Frontier charges for carry-on bags; pay early online to save money.

Read more about FrontierBy Stefanie Waldek
JetBlue

JetBlue offers free gate-to-gate Wi-Fi and live TV channels for all passengers.


JetBlue’s Even More Space upgrade provides up to 18 cm extra legroom and priority boarding.

Read more about JetBlueBy Harriet Baskas
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on JetBlue

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, The Points Guy, and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Good to know - Cheap tickets from Boston to San Juan

Low seasonSeptember
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly and prices are also 4% lower on average.

When to book flights from Boston to San Juan

Are your dates flexible? Find out the best times to travel from Boston to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Boston to San Juan flights

  • Which airlines offer Wi-Fi service onboard planes from Boston to San Juan?

    JetBlue, Delta, and American Airlines offer inflight Wi-Fi service on the Boston to San Juan flight route.

  • Which aircraft models fly most regularly from Boston to San Juan?

    The Airbus A321neo is the aircraft model that flies most regularly on the Boston to San Juan flight route.

  • On which days can I fly direct from Boston to San Juan?

    There are direct flights from Boston to San Juan on a daily basis.

  • How does KAYAK find such low prices on flights from Boston to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Boston is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Juan with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to San Juan Luis Munoz Marin Intl Airport

  • Looking for a cheap flight from San Juan to Boston? 25% of our users found flights on this route for £170 or less one-way.

Prefer to fly direct from Boston to San Juan?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Boston Logan Intl to San Juan Luis Munoz Marin Intl.
Find which airlines fly direct from Boston Logan Intl Airport to San Juan Luis Munoz Marin Intl Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to San Juan Luis Munoz Marin Intl

Monday

Delta, JetBlue, Spirit Airlines, +1 more

Delta, JetBlue, +2 more

Tuesday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Wednesday

Delta, JetBlue, Spirit Airlines

Delta, JetBlue, +1 more

Thursday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Friday

Delta, JetBlue, Spirit Airlines, +1 more

Delta, JetBlue, +2 more

Saturday

Delta, JetBlue, Spirit Airlines, +1 more

Delta, JetBlue, +2 more

Sunday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

See more direct flights

Direct returns

San Juan Luis Munoz Marin Intl to Boston Logan Intl

Monday

Delta, JetBlue, Spirit Airlines, +1 more

Delta, JetBlue, +2 more

Tuesday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Wednesday

Delta, JetBlue, Spirit Airlines

Delta, JetBlue, +1 more

Thursday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

Friday

Delta, JetBlue, Spirit Airlines, +1 more

Delta, JetBlue, +2 more

Saturday

Delta, JetBlue, Spirit Airlines, +1 more

Delta, JetBlue, +2 more

Sunday

Delta, Frontier, JetBlue, +1 more

Delta, Frontier, +2 more

See more direct flights

Reviews of the top airline flying from Boston to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Boston to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to San Juan? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
JetBlueOverall score based on 2899 reviews
7.4Boarding
7.6Comfort
8.0Crew
6.7Food
7.2Entertainment
Airline reviews

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

10.0 ExcellentJeff, Nov 2025
BOS - JFK
Read more JetBlue reviews

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

There was a fowl odour coming from the lavatory the entire flight

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

Everything you need to know for your flight from Boston to San Juan

Information on your arrival and departure airports

Boston (BOS)
Luis Munoz Marin Intl (SJU)