Flights Philadelphia → St. Thomas
PHL → STT
Route overview
The flight route from Philadelphia to St. Thomas operates with a high level of punctuality, with 88% of flights arriving on time, and an average delay of just 4.3 minutes. Over the course of a year, this route sees approximately 97 flights using Boeing 757 or Boeing 757-200 aircraft, serving a destination airport that handles nearly 1.46 million passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Philadelphia (PHL) → St. Thomas (STT) route is operated by American Airlines. Across 128 flights monitored in recent months, 84% arrived on time (within 15 min of schedule), with an average delay of 7 minutes. The cancellation rate is 0.78%. FlightGuard's average computed risk is 19.5/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At St. Thomas the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Philadelphia the average ATFM delay is 2.0 minutes.
Heading to St. Thomas: what to expect in this direction
Flying from Philadelphia (PHL) to St. Thomas (STT) heads south-east for about 2,589 km, a flight time of roughly 3h 39m.
Departures from Philadelphia on this leg cluster in the overnight window: about 70% of PHL-STT flights take off then.
Air-traffic congestion: departing Philadelphia the average ATFM delay is 2.0 min (atfm); arriving into St. Thomas it is 2.0 min (atfm).
Across 128 tracked PHL-STT flights, 84% left on time with an average delay of 7 min and a 0.8% cancellation rate.
Route facts
Flights on this route
Check the risk of a specific flight.
Flexible on this trip? Compare flights
Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| American Airlines (AA) | 74% | 16 min | 3.0% |
Airlines operating PHL-STT
Airports
Frequently asked questions about PHL-STT
On the Philadelphia (PHL) -> St. Thomas (STT) route, on-time performance is 84% with an average delay of 7 minutes, based on 128 tracked flights.
The cancellation rate on Philadelphia-St. Thomas is 0.78% across 128 monitored flights.
The route is operated by 1 airline: American Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at St. Thomas, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
