Cheap Flights from Philadelphia to St. Thomas

View €303 flight on Thu, 4 Sep 2025Opens in a new window

Popular airlines from Philadelphia to St. Thomas

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Cheap flights from Philadelphia to St. Thomas (ILG-STT)

Prices were available within the past 7 days and start at €303 for one-way flights and €523 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 4 Sep - Thu, 18 Sep
PHL
Philadelphia
STT
St. Thomas
€523 Return, found 4 hours ago
€523
Return
found 4 hours ago
Select American Airlines flight, departing Thu, 4 Sep from Philadelphia to St. Thomas, returning Thu, 18 Sep, priced at €523 found 4 hours ago
Delta
Thu, 4 Sep - Thu, 18 Sep
PHL
Philadelphia
STT
St. Thomas
€565 Return, found 4 hours ago
€565
Return
found 4 hours ago
Select Delta flight, departing Thu, 4 Sep from Philadelphia to St. Thomas, returning Thu, 18 Sep, priced at €565 found 4 hours ago
Delta
Thu, 4 Sep - Thu, 18 Sep
PHL
Philadelphia
STT
St. Thomas
€570 Return, found 4 hours ago
€570
Return
found 4 hours ago
Select Delta flight, departing Thu, 4 Sep from Philadelphia to St. Thomas, returning Thu, 18 Sep, priced at €570 found 4 hours ago
Delta
Thu, 4 Sep - Thu, 18 Sep
PHL
Philadelphia
STT
St. Thomas
€610 Return, found 4 hours ago
€610
Return
found 4 hours ago
Select Delta flight, departing Thu, 4 Sep from Philadelphia to St. Thomas, returning Thu, 18 Sep, priced at €610 found 4 hours ago
JetBlue Airways
Thu, 4 Sep - Thu, 18 Sep
PHL
Philadelphia
STT
St. Thomas
€637 Return, found 4 hours ago
€637
Return
found 4 hours ago
Select JetBlue Airways flight, departing Thu, 4 Sep from Philadelphia to St. Thomas, returning Thu, 18 Sep, priced at €637 found 4 hours ago
United
Sat, 9 Aug - Sat, 16 Aug
PHL
Philadelphia
STT
St. Thomas
€930 Return, found 2 days ago
€930
Return
found 2 days ago
Select United flight, departing Sat, 9 Aug from Philadelphia to St. Thomas, returning Sat, 16 Aug, priced at €930 found 2 days ago

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

September is typically the cheapest month to fly

From €135 - €333 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.