$837 Cheap Flights from Sofia (SOF) to St. Thomas (STT)

View $837 flight on Mon, Nov 17, 2025Opens in a new window

Popular airlines from Sofia Airport (SOF) to Cyril E. King Airport (STT)

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Cheap Flights from Sofia to St. Thomas (SOF-STT)

Prices were available within the past 7 days and start at $837 for one-way flights and $902 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Nov 23 - Sun, Dec 7
SOF
Sofia
STT
St. Thomas
$902 Roundtrip, found 14 hours ago
$902
Roundtrip
found 14 hours ago
Select United flight, departing Sun, Nov 23 from Sofia to St. Thomas, returning Sun, Dec 7, priced at $902 found 14 hours ago
United
Sun, Nov 2 - Wed, Nov 19
SOF
Sofia
STT
St. Thomas
$904 Roundtrip, found 14 hours ago
$904
Roundtrip
found 14 hours ago
Select United flight, departing Sun, Nov 2 from Sofia to St. Thomas, returning Wed, Nov 19, priced at $904 found 14 hours ago
United
Mon, Nov 17 - Thu, Dec 4
SOF
Sofia
STT
St. Thomas
$917 Roundtrip, found 14 hours ago
$917
Roundtrip
found 14 hours ago
Select United flight, departing Mon, Nov 17 from Sofia to St. Thomas, returning Thu, Dec 4, priced at $917 found 14 hours ago
Lufthansa
Sun, Nov 9 - Sun, Nov 23
SOF
Sofia
STT
St. Thomas
$922 Roundtrip, found 14 hours ago
$922
Roundtrip
found 14 hours ago
Select Lufthansa flight, departing Sun, Nov 9 from Sofia to St. Thomas, returning Sun, Nov 23, priced at $922 found 14 hours ago
Lufthansa
Sun, Nov 9 - Wed, Nov 26
SOF
Sofia
STT
St. Thomas
$925 Roundtrip, found 14 hours ago
$925
Roundtrip
found 14 hours ago
Select Lufthansa flight, departing Sun, Nov 9 from Sofia to St. Thomas, returning Wed, Nov 26, priced at $925 found 14 hours ago
United
Thu, Nov 27 - Sun, Dec 7
SOF
Sofia
STT
St. Thomas
$931 Roundtrip, found 14 hours ago
$931
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 27 from Sofia to St. Thomas, returning Sun, Dec 7, priced at $931 found 14 hours ago
United
Thu, Nov 13 - Wed, Nov 26
SOF
Sofia
STT
St. Thomas
$933 Roundtrip, found 14 hours ago
$933
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Nov 13 from Sofia to St. Thomas, returning Wed, Nov 26, priced at $933 found 14 hours ago
United
Mon, Nov 17 - Wed, Dec 3
SOF
Sofia
STT
St. Thomas
$946 Roundtrip, found 14 hours ago
$946
Roundtrip
found 14 hours ago
Select United flight, departing Mon, Nov 17 from Sofia to St. Thomas, returning Wed, Dec 3, priced at $946 found 14 hours ago
British Airways
Mon, Nov 17 - Fri, Dec 5
SOF
Sofia
STT
St. Thomas
$961 Roundtrip, found 14 hours ago
$961
Roundtrip
found 14 hours ago
Select British Airways flight, departing Mon, Nov 17 from Sofia to St. Thomas, returning Fri, Dec 5, priced at $961 found 14 hours ago
Austrian Airlines
Sat, Nov 8 - Sun, Nov 23
SOF
Sofia
STT
St. Thomas
$981 Roundtrip, found 14 hours ago
$981
Roundtrip
found 14 hours ago
Select Austrian Airlines flight, departing Sat, Nov 8 from Sofia to St. Thomas, returning Sun, Nov 23, priced at $981 found 14 hours ago

Alternative airports near St. Thomas

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

Select flight to Cyril E. King STT. Cheapest option available. Flights from $1,009
STT
Cyril E. King
Cheapest
Flights from $1,009
Flights from Sofia (SOF) to St. Thomas (STT)
Origin airport
Sofia
Destination airport
Cyril E. King
Airlines serving
British Airways, United
Roundtrip price
$902
Distance
5286 mi

Sofia to St. Thomas Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Sofia 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 Sofia 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 Sofia to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $837 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 Sofia 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 Sofia 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 Sofia Airport (SOF) to Cyril E. King Airport (STT) cost?
Secure a cheap one-way flight from $837 or cheap return flight from $902 from Sofia Airport (SOF) 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 Sofia Airport (SOF) to Cyril E. King Airport (STT)?
November is the least expensive month to fly from SOF to STT. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Sofia Airport (SOF) to Cyril E. King Airport (STT)?
To find the cheapest airline that'll fly you from SOF to STT, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Sofia Airport (SOF) to Cyril E. King Airport (STT)?
Nonstop flights from Sofia Airport (SOF) to Cyril E. King Airport (STT) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SOF to STT?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sofia Airport (SOF) to Cyril E. King Airport (STT)?
Select a flight from Sofia Airport (SOF) 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 Sofia Airport (SOF) to Cyril E. King Airport (STT) last-minute?
Waiting until just before your trip to book your flight from SOF to STT generally means paying more. While you may come across some last-minute offers, there's no guarantee. Allow some flexibility in your schedule for a better chance of getting a bargain.
Is it cheaper to book a SOF to STT flight and hotel package?
Compared with arranging hotels and flights separately, booking a SOF to STT flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the stress out of travel planning. Simply secure your flights and select from our extensive range of hotels, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sofia Airport (SOF) to Cyril E. King Airport (STT)?
In most cases, you can reschedule or cancel your SOF to STT flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you'd like further information, go to our Customer Service portal.

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*Available to One Key members.