BOS - SIG

Find cheap flights from Boston to San Juan Isla Grande - Compare and Save

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Isla Grande 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

When to travel
Cheapest • 100% price drop
Most popular
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We hope you love your trip to Isla Grande!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Isla Grande (BOS-SIG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Isla Grande 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 round-trip flight deals from Boston to Isla Grande

Multiple Airlines Logo
BOS
-
SIG
1676 mimulti-stop
Multiple Airlines Logo
SIG
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BOS
1676 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to Isla Grande flights

Get data-powered insights and trends into flights from Boston to Isla Grande 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 Isla Grande 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 Isla Grande 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 Isla Grande Airport is June, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $794 and $791 respectively.

Good to know

Low seasonNovember
Best time to beat the crowds with an average 47% drop in price.
Most popular time to fly and prices are also 23% lower on average.

When to book flights from Boston to Isla Grande

Are your dates flexible? Find out the best times to travel from Boston to Isla Grande based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 Isla Grande flights

  • Do I need a passport to fly between Boston and San Juan Isla Grande?

    Yes

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

    We unfortunately don’t have that data for this specific route.

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

    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 Isla Grande.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan Isla Grande with an airline and back to Boston with another airline. Booking your flights between Boston and SIG can sometimes prove cheaper using this method.

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

    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 Isla Grande from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to Isla Grande

 
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 Isla Grande? 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.
7.1
JetBlueOverall score based on 3001 reviews
7.9Crew
6.6Food
7.2Entertainment
7.3Boarding
7.5Comfort
Airline reviews

Domestic flights are good. Just stay away from international travel

8.0 ExcellentHugo, Jun 2026
JFK - BUF
Read more JetBlue reviews

Domestic flights are good. Just stay away from international travel

Flight left 2 hours late with no explanation as to the delay

The aircraft was fine, it’s was just the service. The flight got canceled several times and that was very inconvenient for my 69 years old mom.

My checked in luggage cost was $59, almost ticket price. The first 13 rows were empty, but fly attendant did not alow women with little boy change her middle sit, sweet boy was crying, I am so sorry for mother and passengers. At the end of the flight the cabin became impossible cold. Only good was timing of departure and early landing, but it suppose to be normal.

I like everything. Blythe at DCA is the absolute best!

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

My bag was not loaded on my flight. it was not communicated to me until i was waiting for my bag at my destination. there was no confirmation of when my bag was arriving and no way to track it.

The gate attendant in Boston had a high raspy voice and spoke much too fast to be understood. Not pleasant.

It was fine for what it was. It’s not luxury travel but it was efficient, for the most part. Having my carry-on transferred into luggage however, was unwelcome.

We had better-than-average leg room and I loved the access to shows and movies. During boarding, we could not hear the agent even though we were close to the boarding door, which was kind of scary when we realized that half of the passengers had already boarded. Also, the entertainment was awesome, but I could not hear the movie as well as I would have liked, because my headphones were crappy. It would have been better if I could connect my own ear buds via Bluetooth or if JetBlue provided headphones.

Everything you need to know for your flight from Boston to Isla Grande

Information on your arrival and departure airports