$115 Cheap Spirit Airlines flights Philadelphia (PHL) to St. Thomas (STT)

View $115 flight on Tue, Jul 29, 2025Opens in a new window

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$115 Cheap Spirit Airlines flights Philadelphia (PHL) to St. Thomas (STT)

Prices were available within the past 7 days and start at $115 for one-way flights and $222 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, Jul 22 - Mon, Jul 28
PHL
Philadelphia
STT
St. Thomas
$222 Roundtrip, found 3 days ago
$222
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Tue, Jul 22 from Philadelphia to St. Thomas, returning Mon, Jul 28, priced at $222 found 3 days ago
Spirit Airlines
Sat, Jul 19 - Tue, Jul 29
PHL
Philadelphia
STT
St. Thomas
$235 Roundtrip, found 3 days ago
$235
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Sat, Jul 19 from Philadelphia to St. Thomas, returning Tue, Jul 29, priced at $235 found 3 days ago
Spirit Airlines
Tue, Jul 15 - Fri, Jul 18
PHL
Philadelphia
STT
St. Thomas
$240 Roundtrip, found 3 days ago
$240
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Tue, Jul 15 from Philadelphia to St. Thomas, returning Fri, Jul 18, priced at $240 found 3 days ago
Spirit Airlines
Tue, Jul 22 - Mon, Aug 11
PHL
Philadelphia
STT
St. Thomas
$247 Roundtrip, found 3 days ago
$247
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Tue, Jul 22 from Philadelphia to St. Thomas, returning Mon, Aug 11, priced at $247 found 3 days ago
Spirit Airlines
Tue, Jul 29 - Sat, Aug 2
PHL
Philadelphia
STT
St. Thomas
$257 Roundtrip, found 10 hours ago
$257
Roundtrip
found 10 hours ago
Select Spirit Airlines flight, departing Tue, Jul 29 from Philadelphia to St. Thomas, returning Sat, Aug 2, priced at $257 found 10 hours ago
Spirit Airlines
Tue, Jul 29 - Mon, Aug 4
PHL
Philadelphia
STT
St. Thomas
$258 Roundtrip, found 2 hours ago
$258
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Tue, Jul 29 from Philadelphia to St. Thomas, returning Mon, Aug 4, priced at $258 found 2 hours ago
Flights from Philadelphia (PHL) to St. Thomas (STT)
Origin airport
Philadelphia Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, Spirit Airlines, United
Popular airline
American Airlines
Distance
1609 mi
Average flight time
2 hours 55 mins

Frequently asked questions

How much is a Spirit Airlines flight from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
You can discover budget-friendly return Spirit Airlines flights from $222 from PHL to STT by sorting your results from "Price (lowest to highest)" on Expedia. Or look for deals from $115 for a one-way trip.**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 PHL to STT with Spirit Airlines?
Spirit Airlines flights to St. Thomas are typically more affordable in the low-season months of September and October. Whether you're in search of a return or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT) with Spirit Airlines?
Check for Spirit Airlines flights from PHL to STT about one month before you want to leave. The most affordable time to reserve 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. No matter your ticket type or itinerary, the best day to book international airfare is usually Sunday. Friday can be 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 Spirit Airlines fly nonstop from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
To figure out if there's a direct route from PHL to STT with Spirit Airlines or any other carriers, check the "Nonstop" filter when looking for flights.
What is the earliest Spirit Airlines flight from PHL to STT?
To find the earliest departures from PHL to STT with Spirit Airlines, filter 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 Spirit Airlines fly into in St. Thomas?
Jump on a Spirit Airlines flight from Philadelphia Intl. Airport (PHL) to St. Thomas, and you'll probably come in to Cyril E. King Airport (STT). This is the airline's primary hub in this city.
Why fly with Spirit Airlines from PHL to STT?
A rewarding loyalty program and the ability to rack up points through Free Spirit are the start of the reasons to leave from PHL to STT with Spirit Airlines. Plus, when you sign up to Expedia's free One Key™ program, you can earn OneKeyCash™* in addition to any airline 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 Spirit Airlines flight from Philadelphia Intl. Airport (PHL) to Cyril E. King Airport (STT)?
It's usually possible to cancel or modify your flight, although there may be additional charges if you booked over 24 hours ago. Want to keep your options open? Apply the "Changes included" and "No cancel fee" filters to find flights that won't charge extra if you need to adjust your plans. To make changes, go to "Trips," select your flight and click on "Manage Booking" for more details.

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