$272 Cheap United flights Louisville (SDF) to St. Thomas (STT)

View $272 flight on Fri, Jan 2, 2026Opens in a new window
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$272 Cheap United flights Louisville (SDF) to St. Thomas (STT)

Prices were available within the past 7 days and start at $272 for one-way flights and $371 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Oct 25 - Wed, Oct 29
SDF
Louisville
STT
St. Thomas
$371 Roundtrip, found 11 hours ago
$371
Roundtrip
found 11 hours ago
Select United flight, departing Sat, Oct 25 from Louisville to St. Thomas, returning Wed, Oct 29, priced at $371 found 11 hours ago
Flights from Louisville (SDF) to St. Thomas (STT)
Origin airport
Louisville Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, Southwest Airlines, Spirit Airlines, United
Popular airline
American Airlines
Distance
1855 mi

Frequently asked questions

How much is a United Airlines flight from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
Finding cheap one-way United Airlines flights from SDF to STT from $272 on Expedia is easy — just filter by "Price (lowest to highest)." Or check out our affordable round-trip fares from $371 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SDF to STT with United Airlines?
United Airlines flights to St. Thomas are typically cheaper in the quieter months of September and October. Whether you're in search of a one-way or a return ticket, you could score a better deal then.
What is the cheapest time to book flights from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT) with United Airlines?
Look for United Airlines flights from SDF to STT about one month before you want to go. The most affordable time to book an international flight is usually 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. Regardless of fare class or itinerary, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Passengers booking on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
To see if there's a direct trip from SDF to STT with United Airlines or any other airlines, select the "Nonstop" filter when searching for tickets.
What is the earliest United Airlines flight from SDF to STT?
To find the earliest departures from SDF to STT with United Airlines, sort your results by "Early Morning" and "Morning." Booking an early flight usually means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in St. Thomas?
Cyril E. King Airport (STT) is the main St. Thomas gateway for United Airlines flights from Louisville Intl. Airport (SDF).
Why fly with United Airlines from SDF to STT?
A rewarding loyalty program and the ability to rack up points through United Mileage Plus are the start of the reasons to depart from SDF to STT with United Airlines. Plus, by joining Expedia's free One Key™ program, you can earn OneKeyCash™* alongside United Airlines's loyalty program earnings. It's yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Louisville Intl. Airport (SDF) to Cyril E. King Airport (STT)?
Depending on the type of fare you purchased, a fee generally applies if you modify or cancel your booking more than 24 hours after it's been confirmed. To find plane tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes when you look for flights. For more information on changing or canceling your reservation, visit "Trips," select your flight and click on "Manage Booking."

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