$113 Cheap Flights from Philadelphia (PHL) to St. Thomas (STT)

View $113 flight on Thu, Feb 5, 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)

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Cheap Flights from Philadelphia to St. Thomas (PHL-STT)

Prices were available within the past 7 days and start at $113 for one-way flights and $253 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Sat, Jan 31 - Sat, Feb 7
PHL
Philadelphia
STT
St. Thomas
$253 Roundtrip, just found
$253
Roundtrip
just found
Select Spirit Airlines flight, departing Sat, Jan 31 from Philadelphia to St. Thomas, returning Sat, Feb 7, priced at $253 just found
Spirit Airlines
Thu, Jan 29 - Thu, Feb 5
PHL
Philadelphia
STT
St. Thomas
$262 Roundtrip, just found
$262
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Jan 29 from Philadelphia to St. Thomas, returning Thu, Feb 5, priced at $262 just found
Spirit Airlines
Mon, Jan 5 - Sat, Jan 10
PHL
Philadelphia
STT
St. Thomas
$264 Roundtrip, found 7 hours ago
$264
Roundtrip
found 7 hours ago
Select Spirit Airlines flight, departing Mon, Jan 5 from Philadelphia to St. Thomas, returning Sat, Jan 10, priced at $264 found 7 hours ago
Spirit Airlines
Thu, Jan 22 - Thu, Jan 29
PHL
Philadelphia
STT
St. Thomas
$268 Roundtrip, found 5 hours ago
$268
Roundtrip
found 5 hours ago
Select Spirit Airlines flight, departing Thu, Jan 22 from Philadelphia to St. Thomas, returning Thu, Jan 29, priced at $268 found 5 hours ago
Spirit Airlines
Sat, Jan 31 - Sat, Feb 7
PHL
Philadelphia
STT
St. Thomas
$274 Roundtrip, just found
$274
Roundtrip
just found
Select Spirit Airlines flight, departing Sat, Jan 31 from Philadelphia to St. Thomas, returning Sat, Feb 7, priced at $274 just found
Spirit Airlines
Mon, Jan 5 - Wed, Jan 7
PHL
Philadelphia
STT
St. Thomas
$275 Roundtrip, found 1 hour ago
$275
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Mon, Jan 5 from Philadelphia to St. Thomas, returning Wed, Jan 7, priced at $275 found 1 hour ago
JetBlue Airways
Tue, Mar 31 - Wed, Apr 8
PHL
Philadelphia
STT
St. Thomas
$303 Roundtrip, found 1 day ago
$303
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Mar 31 from Philadelphia to St. Thomas, returning Wed, Apr 8, priced at $303 found 1 day ago
Southwest Airlines
Wed, May 27 - Sun, May 31
PHL
Philadelphia
STT
St. Thomas
$495 Roundtrip, found 3 days ago
$495
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, May 27 from Philadelphia to St. Thomas, returning Sun, May 31, priced at $495 found 3 days ago
American Airlines
Tue, May 5 - Tue, May 12
PHL
Philadelphia
STT
St. Thomas
$570 Roundtrip, just found
$570
Roundtrip
just found
Select American Airlines flight, departing Tue, May 5 from Philadelphia to St. Thomas, returning Tue, May 12, priced at $570 just found
Delta
Sun, Feb 8 - Thu, Feb 12
PHL
Philadelphia
STT
St. Thomas
$579 Roundtrip, found 1 hour ago
$579
Roundtrip
found 1 hour ago
Select Delta flight, departing Sun, Feb 8 from Philadelphia to St. Thomas, returning Thu, Feb 12, priced at $579 found 1 hour ago

Find the cheapest month to fly from Philadelphia (PHL) to St. Thomas (STT)

February is typically the cheapest month to fly

From $165 - $496 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 $1,153
EIS
Terrance B. Lettsome Intl.
Flights from $1,153

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT) cost?
Grab a cheap one-way flight from $113 or cheap return flight from $253 from Philadelphia Intl. Airport (PHL) 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 Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
Planning your trip for January may help you find better deals, as it's the cheapest month for flights between PHL and STT. You'll often find the lowest prices during the off-season.
Which airlines fly direct from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
When jetting out of Philadelphia Intl. Airport (PHL), you can catch a nonstop flight to Cyril E. King Airport (STT) with American Airlines.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) 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 PHL to STT. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
On average, there's only 1 direct flight taking off from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT) per day. If this doesn't suit your schedule, consider flights with layovers. Simply filter your search results on Expedia to include one or two stops to discover the next best option.
What are the most popular departure times for flights from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
More passengers fly between PHL and STT at 8 AM than at any other point in the day. Looking for a quieter experience? Pick a flight outside the busiest times and it's possible you'll save on your fare as well.
What day of the week has the most flights from PHL to STT?
Fly on a Friday if you're after the best selection of flights from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT).
What is the earliest flight from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
Hop on the earliest flight at around 8:29AM UTC-5, departing from Philadelphia Intl. Airport (PHL). You'll be traveling for roughly 4h, landing at Cyril E. King Airport (STT) at approximately 1:29PM UTC-4.
How long does it take to fly from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
Flights from PHL to STT have an average travel time of 4 hours. The distance between the two airports is 1,600 mi.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
Opt for a flight from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT) that leaves before 3 PM to reduce the risk 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 Philadelphia Intl. Airport (PHL)?
If you've booked a direct flight from Philadelphia Intl. Airport (PHL) 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 Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT) last-minute?
Last-minute fares from PHL to STT are usually more expensive. To secure the lowest prices, start looking for flights as soon as possible. That said, if you can play around with your travel dates, you may score a cheap fare right before you leave.
Is it cheaper to book a PHL to STT flight and hotel package?
Opting for a PHL to STT flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our wide range of accommodations and then add activities, flights and car rentals 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 Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
Typically, you're able to cancel or reschedule your PHL to STT flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further details, head to our Customer Service portal.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$252
Distance
1609 mi
Average flight time
2 hours 55 mins

Book with confidence

Philadelphia to St. Thomas Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Philadelphia 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 Philadelphia 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 Philadelphia to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $113 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 Philadelphia 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 Philadelphia 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.

 

Philadelphia to St. Thomas Flights

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*Available to One Key members.