$392 Cheap Flights from San Juan (SJU) to Nantucket (ACK)

View $392 flight on Thu, Oct 16, 2025Opens in a new window

Popular airlines from Luis Munoz Marin Intl. Airport (SJU) to Nantucket, MA (ACK-Nantucket Memorial)

Cheap Flights from San Juan to Nantucket (SJU-ACK)

Prices were available within the past 7 days and start at $392 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK) cost?
Get a cheap one-way flight from $392 or cheap return flight from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK) 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 Nantucket Memorial Airport (ACK)?
is the most affordable month to fly from SJU to ACK. Avoiding peak travel times is often the key to scoring lower fares.
What is the cheapest airline that flies from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SJU to ACK. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK)?
Nonstop flights from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SJU to ACK?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK)?
To avoid potential delays on the Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK) route, aim to travel before 3 PM. Departures after this time 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.
Is it cheaper to buy a plane ticket from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK) last-minute?
Last-minute bookings from SJU to ACK are usually more expensive. For the lowest rates, start searching for flights early. That said, if you're flexible with your travel plans, you may land a cheap fare right before your trip.
Is it cheaper to book a SJU to ACK flight and hotel package?
Opting for a SJU to ACK flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Luis Munoz Marin Intl. Airport (SJU) to Nantucket Memorial Airport (ACK)?
Usually, it's possible to cancel or reschedule your SJU to ACK flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed 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
Nantucket Memorial
Distance
1594 mi

Book with confidence

San Juan to Nantucket Flights

The cheapest times to fly from San Juan to Nantucket

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 Nantucket are during the month of . You can find some of the cheapest flights from San Juan to Nantucket with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from San Juan to Nantucket: 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 Nantucket

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 Nantucket in 2025. You can also book with separate airlines for your outbound and return journeys, from $392 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 Nantucket 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 Nantucket 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 Nantucket Flights

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*Available to One Key members.