Cheap Flights from Philadelphia (PHL) to St. Thomas (SPB)

Popular airlines from Philadelphia Intl. Airport (PHL) to St. Thomas (SPB-St. Thomas Seaplane Base)

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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 $409
STT
Cyril E. King
Cheapest
Flights from $409
Select flight to Terrance B. Lettsome Intl. EIS. Flights from $1,013
EIS
Terrance B. Lettsome Intl.
Flights from $1,013

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB) cost?
Snag a cheap one-way flight or cheap return flight from Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB) 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 St. Thomas Seaplane Base Airport (SPB)?
The cheapest month to fly from PHL to SPB is , when there's less demand. Off-peak months are typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PHL to SPB flight.
How many flights per day from Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB)?
Direct flights from Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PHL to SPB?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change depending on the season, 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 Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB)?
To avoid potential delays on the Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB) route, aim to fly before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Charlotte Amalie from Philadelphia Intl. Airport (PHL)?
Compare your flight options from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT). This is the only Charlotte Amalie airport you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB) last-minute?
Booking your plane ticket from PHL to SPB just before your trip is generally more expensive. But if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a PHL to SPB flight and hotel package?
You'll generally save money by securing a PHL to SPB flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to St. Thomas Seaplane Base Airport (SPB)?
In most instances, you can cancel or modify your PHL to SPB flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
St. Thomas Seaplane Base
Distance
1610 mi

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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 . 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 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
*Available to One Key members.