$297 Cheap Flights from St. Thomas (STT) to Key West (EYW)

View $297 flight on Sat, Nov 22, 2025Opens in a new window

Popular airlines from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW)

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Cheap Flights from St. Thomas to Key West (STT-EYW)

Prices were available within the past 7 days and start at $297 for one-way flights and $705 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Sep 5 - Fri, Sep 12
STT
St. Thomas
EYW
Key West
$705 Roundtrip, found 5 days ago
$705
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Sep 5 from St. Thomas to Key West, returning Fri, Sep 12, priced at $705 found 5 days ago
American Airlines
Fri, Sep 5 - Mon, Sep 8
STT
St. Thomas
EYW
Key West
$729 Roundtrip, found 5 days ago
$729
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Sep 5 from St. Thomas to Key West, returning Mon, Sep 8, priced at $729 found 5 days ago
American Airlines
Sun, Sep 7 - Fri, Sep 12
STT
St. Thomas
EYW
Key West
$730 Roundtrip, found 5 days ago
$730
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Sep 7 from St. Thomas to Key West, returning Fri, Sep 12, priced at $730 found 5 days ago
American Airlines
Fri, Sep 5 - Sat, Sep 13
STT
St. Thomas
EYW
Key West
$751 Roundtrip, found 5 days ago
$751
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Sep 5 from St. Thomas to Key West, returning Sat, Sep 13, priced at $751 found 5 days ago
American Airlines
Tue, Sep 2 - Fri, Sep 12
STT
St. Thomas
EYW
Key West
$755 Roundtrip, found 5 days ago
$755
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Sep 2 from St. Thomas to Key West, returning Fri, Sep 12, priced at $755 found 5 days ago
American Airlines
Sun, Sep 7 - Sat, Sep 13
STT
St. Thomas
EYW
Key West
$776 Roundtrip, found 5 days ago
$776
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Sep 7 from St. Thomas to Key West, returning Sat, Sep 13, priced at $776 found 5 days ago
American Airlines
Tue, Sep 2 - Mon, Sep 8
STT
St. Thomas
EYW
Key West
$779 Roundtrip, found 5 days ago
$779
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Sep 2 from St. Thomas to Key West, returning Mon, Sep 8, priced at $779 found 5 days ago
American Airlines
Sun, Sep 7 - Mon, Sep 8
STT
St. Thomas
EYW
Key West
$784 Roundtrip, found 5 days ago
$784
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Sep 7 from St. Thomas to Key West, returning Mon, Sep 8, priced at $784 found 5 days ago
American Airlines
Sat, Sep 6 - Mon, Sep 8
STT
St. Thomas
EYW
Key West
$793 Roundtrip, found 5 days ago
$793
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Sep 6 from St. Thomas to Key West, returning Mon, Sep 8, priced at $793 found 5 days ago
American Airlines
Sat, Aug 30 - Thu, Sep 18
STT
St. Thomas
EYW
Key West
$815 Roundtrip, found 2 days ago
$815
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Aug 30 from St. Thomas to Key West, returning Thu, Sep 18, priced at $815 found 2 days ago
Flights from St. Thomas (STT) to Key West (EYW)
Origin airport
Cyril E. King
Destination airport
Key West Intl.
Roundtrip price
$705
Distance
1160 mi

St. Thomas to Key West Flights

The cheapest times to fly from St. Thomas to Key West

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 St. Thomas to Key West are during the month of September. You can find some of the cheapest flights from St. Thomas to Key West with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Thomas to Key West

Sunday is one of the best days to book for cheap flights from St. Thomas to Key West: 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 St. Thomas to Key West

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 St. Thomas to Key West in 2025. You can also book with separate airlines for your outbound and return journeys, from $297 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 St. Thomas to Key West 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 St. Thomas to Key West 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 Cyril E. King Airport (STT) to Key West Intl. Airport (EYW) cost?
Lock in a cheap one-way flight from $297 or cheap return flight from $705 from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW) 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 Cyril E. King Airport (STT) to Key West Intl. Airport (EYW)?
September is the least expensive month to fly from STT to EYW. Avoiding peak travel times is often the key to scoring lower fares.
What is the cheapest airline that flies from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from STT to EYW. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW)?
You'll need to hop on a flight with a layover if you're traveling from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from STT to EYW?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on a range of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW)?
Choose a flight from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time 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 Cyril E. King Airport (STT) to Key West Intl. Airport (EYW) last-minute?
Last-minute fares from STT to EYW are typically more expensive. To secure the best prices, start looking for flights early. That being said, if your travel plans are flexible, you may score a cheap fare just before your departure.
Is it cheaper to book a STT to EYW flight and hotel package?
Booking a STT to EYW flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our wide range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Cyril E. King Airport (STT) to Key West Intl. Airport (EYW)?
Usually, it's possible to reschedule or cancel your STT to EYW flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.