$356 Cheap Flights from Nantucket (ACK) to St. Thomas (STT)

View $356 flight on Mon, Jun 23, 2025Opens in a new window

Popular airlines from Nantucket, MA (ACK-Nantucket Memorial) to Cyril E. King Airport (STT)

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Nantucket to St. Thomas (ACK-STT)

Prices were available within the past 7 days and start at $356 for one-way flights and $613 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Jun 23 - Tue, Jul 1
ACK
Nantucket
STT
St. Thomas
$613 Roundtrip, found 2 days ago
$613
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 23 from Nantucket to St. Thomas, returning Tue, Jul 1, priced at $613 found 2 days ago
American Airlines
Thu, Jun 26 - Tue, Jul 1
ACK
Nantucket
STT
St. Thomas
$663 Roundtrip, found 2 days ago
$663
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Jun 26 from Nantucket to St. Thomas, returning Tue, Jul 1, priced at $663 found 2 days ago
American Airlines
Mon, Jun 23 - Mon, Jun 30
ACK
Nantucket
STT
St. Thomas
$664 Roundtrip, found 2 days ago
$664
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 23 from Nantucket to St. Thomas, returning Mon, Jun 30, priced at $664 found 2 days ago
American Airlines
Thu, Jun 26 - Mon, Jun 30
ACK
Nantucket
STT
St. Thomas
$714 Roundtrip, found 2 days ago
$714
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Jun 26 from Nantucket to St. Thomas, returning Mon, Jun 30, priced at $714 found 2 days ago
American Airlines
Mon, Jun 23 - Wed, Jun 25
ACK
Nantucket
STT
St. Thomas
$764 Roundtrip, found 2 days ago
$764
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 23 from Nantucket to St. Thomas, returning Wed, Jun 25, priced at $764 found 2 days ago
American Airlines
Tue, Jun 24 - Wed, Jun 25
ACK
Nantucket
STT
St. Thomas
$783 Roundtrip, found 2 days ago
$783
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Jun 24 from Nantucket to St. Thomas, returning Wed, Jun 25, priced at $783 found 2 days ago
American Airlines
Sun, Jun 22 - Tue, Jul 1
ACK
Nantucket
STT
St. Thomas
$848 Roundtrip, found 2 days ago
$848
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Jun 22 from Nantucket to St. Thomas, returning Tue, Jul 1, priced at $848 found 2 days ago
American Airlines
Mon, Jun 23 - Thu, Jun 26
ACK
Nantucket
STT
St. Thomas
$895 Roundtrip, found 2 days ago
$895
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 23 from Nantucket to St. Thomas, returning Thu, Jun 26, priced at $895 found 2 days ago
American Airlines
Sun, Jun 22 - Mon, Jun 30
ACK
Nantucket
STT
St. Thomas
$899 Roundtrip, found 2 days ago
$899
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Jun 22 from Nantucket to St. Thomas, returning Mon, Jun 30, priced at $899 found 2 days ago
American Airlines
Wed, Jun 25 - Thu, Jun 26
ACK
Nantucket
STT
St. Thomas
$914 Roundtrip, found 2 days ago
$914
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Jun 25 from Nantucket to St. Thomas, returning Thu, Jun 26, priced at $914 found 2 days ago
Flights from Nantucket (ACK) to St. Thomas (STT)
Origin airport
Nantucket Memorial
Destination airport
Cyril E. King
Roundtrip price
$613
Distance
1612 mi

Nantucket to St. Thomas Flights

The cheapest times to fly from Nantucket to St. Thomas

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

 

The best time to book a flight from Nantucket to St. Thomas

Sunday is one of the best days to book for cheap flights from Nantucket to St. Thomas: 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 Nantucket to St. Thomas

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 Nantucket to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $356 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 Nantucket to St. Thomas 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 Nantucket to St. Thomas 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 Nantucket Memorial Airport (ACK) to Cyril E. King Airport (STT) cost?
Discover the latest flight deals from ACK to STT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ACK to STT?
The cheapest flights from ACK to STT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ACK to STT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from ACK to STT. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Nantucket Memorial Airport (ACK) to Cyril E. King Airport (STT)?
You’ll have to take a flight with a layover if you’re traveling from Nantucket Memorial Airport (ACK) to Cyril E. King Airport (STT). Direct flights don’t operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from ACK to STT?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a range of factors, including 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 Nantucket Memorial Airport (ACK) to Cyril E. King Airport (STT)?
Opt for a flight from Nantucket Memorial Airport (ACK) to Cyril E. King Airport (STT) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 22% more likely to be 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 Nantucket Memorial Airport (ACK) to Cyril E. King Airport (STT) last-minute?
Booking your flight from ACK to STT right before your journey is usually more expensive. But if there’s some wiggle room with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book an ACK to STT flight and hotel package?
Compared with arranging hotels and flights separately, booking an ACK to STT flight and hotel package with Expedia could result in significant savings. What’s more, having everything in one convenient place takes the hassle out of travel planning. Simply pick your flights and choose from our wide range of hotels, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Nantucket Memorial Airport (ACK) to Cyril E. King Airport (STT)?
In most instances, you can reschedule or cancel your ACK to STT flight. However, additional charges may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline’s fees and guidelines on flight changes, or if you want further information, head to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.