$107 Cheap Flights from Boston (BOS) to St. Thomas (STT)

View $107 flight on Mon, Sep 8, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) 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 Boston to St. Thomas (BOS-STT)

Prices were available within the past 7 days and start at $107 for one-way flights and $204 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Mon, Sep 8 - Sat, Sep 13
BOS
Boston
STT
St. Thomas
$204 Roundtrip, found 2 hours ago
$204
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Mon, Sep 8 from Boston to St. Thomas, returning Sat, Sep 13, priced at $204 found 2 hours ago
Spirit Airlines
Fri, Sep 5 - Sat, Sep 13
BOS
Boston
STT
St. Thomas
$228 Roundtrip, found 2 hours ago
$228
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Fri, Sep 5 from Boston to St. Thomas, returning Sat, Sep 13, priced at $228 found 2 hours ago
Spirit Airlines
Sun, Sep 7 - Sat, Sep 13
BOS
Boston
STT
St. Thomas
$230 Roundtrip, found 2 hours ago
$230
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Sun, Sep 7 from Boston to St. Thomas, returning Sat, Sep 13, priced at $230 found 2 hours ago
Spirit Airlines
Fri, Sep 19 - Sat, Sep 20
BOS
Boston
STT
St. Thomas
$234 Roundtrip, found 13 hours ago
$234
Roundtrip
found 13 hours ago
Select Spirit Airlines flight, departing Fri, Sep 19 from Boston to St. Thomas, returning Sat, Sep 20, priced at $234 found 13 hours ago
Spirit Airlines
Fri, Sep 12 - Thu, Sep 18
BOS
Boston
STT
St. Thomas
$235 Roundtrip, found 2 hours ago
$235
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Fri, Sep 12 from Boston to St. Thomas, returning Thu, Sep 18, priced at $235 found 2 hours ago
Spirit Airlines
Thu, Sep 18 - Sat, Sep 20
BOS
Boston
STT
St. Thomas
$239 Roundtrip, found 11 hours ago
$239
Roundtrip
found 11 hours ago
Select Spirit Airlines flight, departing Thu, Sep 18 from Boston to St. Thomas, returning Sat, Sep 20, priced at $239 found 11 hours ago
JetBlue Airways
Sat, Nov 29 - Sat, Dec 6
BOS
Boston
STT
St. Thomas
$302 Roundtrip, found 1 hour ago
$302
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Sat, Nov 29 from Boston to St. Thomas, returning Sat, Dec 6, priced at $302 found 1 hour ago
American Airlines
Sat, Sep 20 - Sat, Sep 27
BOS
Boston
STT
St. Thomas
$311 Roundtrip, just found
$311
Roundtrip
just found
Select American Airlines flight, departing Sat, Sep 20 from Boston to St. Thomas, returning Sat, Sep 27, priced at $311 just found
Delta
Fri, Jan 30 - Tue, Feb 3
BOS
Boston
STT
St. Thomas
$330 Roundtrip, found 1 hour ago
$330
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Jan 30 from Boston to St. Thomas, returning Tue, Feb 3, priced at $330 found 1 hour ago
United
Wed, Nov 5 - Wed, Nov 12
BOS
Boston
STT
St. Thomas
$339 Roundtrip, just found
$339
Roundtrip
just found
Select United flight, departing Wed, Nov 5 from Boston to St. Thomas, returning Wed, Nov 12, priced at $339 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 - $462 per traveler.

Graph displaying average flight prices per month

Alternative airports near St. Thomas

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Terrance B. Lettsome Intl. EIS. Flights from $826
EIS
Terrance B. Lettsome Intl.
Flights from $826
Select flight to Benjamin Rivera Noriega CPX. Cheapest option available. Flights from $465
CPX
Benjamin Rivera Noriega
Cheapest
Flights from $465
Flights from Boston (BOS) to St. Thomas (STT)
Origin airport
Logan Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$203
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 September. 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 $107 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?
Secure a cheap one-way flight from $107 or cheap return flight from $204 from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
September is the cheapest month to fly from BOS to STT. Timing your trip outside of the busy season is often the key to scoring lower fares.
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 Logan Intl. Airport (BOS) to Cyril E. King Airport (STT)?
To find the cheapest airline flying from BOS to STT, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
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.

Explore a world of travel with Expedia

*Available to One Key members.