$114 Cheap Flights from Boston (BOS) to St. Thomas (STT)

View $114 flight on Tue, Aug 5, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to Cyril E. King Airport (STT)

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Cheap Flights from Boston to St. Thomas (BOS-STT)

Prices were available within the past 7 days and start at $114 for one-way flights and $241 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, Aug 5 - Wed, Aug 6
BOS
Boston
STT
St. Thomas
$241 Roundtrip, found 3 hours ago
$241
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Tue, Aug 5 from Boston to St. Thomas, returning Wed, Aug 6, priced at $241 found 3 hours ago
Spirit Airlines
Tue, Aug 5 - Wed, Aug 6
BOS
Boston
STT
St. Thomas
$242 Roundtrip, found 3 hours ago
$242
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Tue, Aug 5 from Boston to St. Thomas, returning Wed, Aug 6, priced at $242 found 3 hours ago
Spirit Airlines
Tue, Aug 5 - Wed, Aug 6
BOS
Boston
STT
St. Thomas
$253 Roundtrip, found 3 hours ago
$253
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Tue, Aug 5 from Boston to St. Thomas, returning Wed, Aug 6, priced at $253 found 3 hours ago
Spirit Airlines
Sat, Aug 2 - Tue, Aug 5
BOS
Boston
STT
St. Thomas
$254 Roundtrip, found 1 day ago
$254
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Sat, Aug 2 from Boston to St. Thomas, returning Tue, Aug 5, priced at $254 found 1 day ago
Spirit Airlines
Tue, Aug 5 - Thu, Aug 7
BOS
Boston
STT
St. Thomas
$257 Roundtrip, found 1 hour ago
$257
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Tue, Aug 5 from Boston to St. Thomas, returning Thu, Aug 7, priced at $257 found 1 hour ago
Spirit Airlines
Mon, Aug 4 - Wed, Aug 6
BOS
Boston
STT
St. Thomas
$267 Roundtrip, found 1 hour ago
$267
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Mon, Aug 4 from Boston to St. Thomas, returning Wed, Aug 6, priced at $267 found 1 hour ago
American Airlines
Fri, Aug 1 - Wed, Aug 6
BOS
Boston
STT
St. Thomas
$291 Roundtrip, just found
$291
Roundtrip
just found
Select American Airlines flight, departing Fri, Aug 1 from Boston to St. Thomas, returning Wed, Aug 6, priced at $291 just found
JetBlue Airways
Sat, Nov 1 - Sat, Nov 8
BOS
Boston
STT
St. Thomas
$302 Roundtrip, just found
$302
Roundtrip
just found
Select JetBlue Airways flight, departing Sat, Nov 1 from Boston to St. Thomas, returning Sat, Nov 8, priced at $302 just found
Delta
Sun, Jul 27 - Wed, Jul 30
BOS
Boston
STT
St. Thomas
$311 Roundtrip, found 1 hour ago
$311
Roundtrip
found 1 hour ago
Select Delta flight, departing Sun, Jul 27 from Boston to St. Thomas, returning Wed, Jul 30, priced at $311 found 1 hour ago
United
Sun, Nov 2 - Fri, Nov 7
BOS
Boston
STT
St. Thomas
$311 Roundtrip, just found
$311
Roundtrip
just found
Select United flight, departing Sun, Nov 2 from Boston to St. Thomas, returning Fri, Nov 7, priced at $311 just found

Find the cheapest month to fly from Boston (BOS) to St. Thomas (STT)

January is typically the cheapest month to fly

From $155 - $553 per traveler.

Graph displaying average flight prices per month

Flights from Boston (BOS) to St. Thomas (STT)
Origin airport
Logan Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, JetBlue Airways, Spirit Airlines, United
Roundtrip price
$240
Distance
1697 mi

Boston to St. Thomas Flights

The cheapest times to fly from Boston 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 Boston to St. Thomas are during the month of August. You can find some of the cheapest flights from Boston to St. Thomas with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Boston 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 Boston 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 Boston to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $114 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 Boston 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 Boston 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 Logan Intl. Airport (BOS) to Cyril E. King Airport (STT) cost?
Discover the latest flight deals from BOS 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 BOS to STT?
The cheapest flights from BOS 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.
Which airlines fly direct from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
You can fly straight from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT) on a JetBlue Airways flight.
What is the cheapest airline that flies from BOS to STT?
Currently, the cheapest airline operating one-way flights from BOS to STT is JetBlue Airways. You can take off on this route from $159. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BOS on August 30 2025. Prices were last updated on July 9 2025 and have not changed since.
How many flights per day from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
On average, there are 3 nonstop flights flying from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT) weekly. If you can't find one that fits your travel plans, consider catching a flight that includes a layover. Filter your search results on Expedia to include one or more stops and choose the next best option.
What are the most popular departure times for flights from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
Flights between BOS and STT tend to be busiest at 8 AM. If you're after a more relaxed experience and potentially cheaper prices, look for a departure that's outside typical rush times.
What day of the week has the most flights from BOS to STT?
If you fly on a Thursday, you'll get the greatest range of options for flights from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT).
What is the earliest flight from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
Hop on the earliest flight at around 7:30AM UTC-5, leaving from Logan Intl. Airport (BOS). You'll be flying for roughly 4h 2m, landing at Cyril E. King Airport (STT) at approximately 12:32PM UTC-4.
How long does it take to fly from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
It takes around 4 hours and 4 minutes to fly the 1,700 mi from BOS to STT.
What airline has the least delays from BOS to STT?
Consider booking with Delta Air Lines if you'd like to fly straight from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT) without any delays. This carrier has the best track record for punctuality, with an on-time performance of 93%. Want to get notified of any changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
Opt for a flight from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 St. Thomas from Logan Intl. Airport (BOS)?
If you're boarding a direct flight from Logan Intl. Airport (BOS) to St. Thomas, Cyril E. King Airport (STT) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT) last-minute?
Last-minute bookings from BOS to STT are usually more expensive. To secure the best prices, start looking for flights well in advance. That said, if your travel plans are flexible, it's possible to find a cheap fare just before your departure.
Is it cheaper to book a BOS to STT flight and hotel package?
You'll generally save money by booking a BOS to STT flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal flights and accommodations, consider adding extras including tours, car rentals and activities.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
In most instances, you can modify or cancel your BOS to STT flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want further information, head to our Customer Service portal.

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