$141 Cheap Flights from Louisville (SDF) to St. Thomas (STT)

View $141 flight on Sun, Jan 11, 2026Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)

Cheap Flights from Louisville to St. Thomas (SDF-STT)

Prices were available within the past 7 days and start at $141 for one-way flights and $285 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Fri, Jan 23 - Fri, Jan 30
SDF
Louisville
STT
St. Thomas
$285 Roundtrip, just found
$285
Roundtrip
just found
Select Spirit Airlines flight, departing Fri, Jan 23 from Louisville to St. Thomas, returning Fri, Jan 30, priced at $285 just found
Spirit Airlines
Thu, Jan 8 - Sun, Jan 11
SDF
Louisville
STT
St. Thomas
$310 Roundtrip, found 11 hours ago
$310
Roundtrip
found 11 hours ago
Select Spirit Airlines flight, departing Thu, Jan 8 from Louisville to St. Thomas, returning Sun, Jan 11, priced at $310 found 11 hours ago
United
Sun, Jan 18 - Sat, Jan 24
SDF
Louisville
STT
St. Thomas
$328 Roundtrip, found 15 hours ago
$328
Roundtrip
found 15 hours ago
Select United flight, departing Sun, Jan 18 from Louisville to St. Thomas, returning Sat, Jan 24, priced at $328 found 15 hours ago
Spirit Airlines
Sat, Jan 31 - Wed, Feb 4
SDF
Louisville
STT
St. Thomas
$328 Roundtrip, found 16 hours ago
$328
Roundtrip
found 16 hours ago
Select Spirit Airlines flight, departing Sat, Jan 31 from Louisville to St. Thomas, returning Wed, Feb 4, priced at $328 found 16 hours ago
Spirit Airlines
Fri, Jan 30 - Sun, Feb 1
SDF
Louisville
STT
St. Thomas
$330 Roundtrip, found 1 day ago
$330
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Fri, Jan 30 from Louisville to St. Thomas, returning Sun, Feb 1, priced at $330 found 1 day ago
Spirit Airlines
Fri, Jan 30 - Sun, Feb 1
SDF
Louisville
STT
St. Thomas
$334 Roundtrip, found 1 day ago
$334
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Fri, Jan 30 from Louisville to St. Thomas, returning Sun, Feb 1, priced at $334 found 1 day ago
Spirit Airlines
Fri, Feb 20 - Wed, Feb 25
SDF
Louisville
STT
St. Thomas
$335 Roundtrip, found 3 days ago
$335
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Fri, Feb 20 from Louisville to St. Thomas, returning Wed, Feb 25, priced at $335 found 3 days ago
American Airlines
Sun, Feb 8 - Mon, Feb 9
SDF
Louisville
STT
St. Thomas
$348 Roundtrip, found 4 days ago
$348
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Feb 8 from Louisville to St. Thomas, returning Mon, Feb 9, priced at $348 found 4 days ago
Delta
Mon, Mar 23 - Tue, Mar 24
SDF
Louisville
STT
St. Thomas
$371 Roundtrip, just found
$371
Roundtrip
just found
Select Delta flight, departing Mon, Mar 23 from Louisville to St. Thomas, returning Tue, Mar 24, priced at $371 just found
Southwest Airlines
Mon, Feb 23 - Thu, Mar 5
SDF
Louisville
STT
St. Thomas
$670 Roundtrip, found 3 hours ago
$670
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Mon, Feb 23 from Louisville to St. Thomas, returning Thu, Mar 5, priced at $670 found 3 hours ago

Find the cheapest month to fly from Louisville (SDF) to St. Thomas (STT)

March is typically the cheapest month to fly

From $166 - $714 per traveler.

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 $1,067
EIS
Terrance B. Lettsome Intl.
Flights from $1,067
Select flight to Benjamin Rivera Noriega CPX. Flights from $743
CPX
Benjamin Rivera Noriega
Flights from $743

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT) cost?
Lock in a cheap one-way flight from $141 or cheap return flight from $285 from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
Traveling in January is a great way to save, as it's the cheapest month for flights between SDF and STT. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SDF to STT. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
There aren't any daily nonstop flights departing from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from SDF to STT?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
Opt for a flight from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT) that leaves before 3 PM to reduce the risk of cancellations. Later departures 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 Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT) last-minute?
Booking your ticket from SDF to STT just before your getaway is generally more expensive. But if there's some wiggle room with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a SDF to STT flight and hotel package?
Booking a SDF to STT flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our extensive range of hotels and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
If you booked your SDF to STT flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

Travel information

Origin airport
Louisville Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$284
Distance
1855 mi

Book with confidence

Louisville to St. Thomas Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Louisville 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 Louisville 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 Louisville to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $141 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 Louisville 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 Louisville 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.

 

Louisville to St. Thomas Flights

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*Available to One Key members.