Flights St. Thomas → Philadelphia
STT → PHL
Route overview
The flight route from St. Thomas to Philadelphia operates with a Boeing 757 or Boeing 757-200 aircraft and has an on-time performance rate of 67%. Over the course of the year, there have been 97 flights along this route, each experiencing an average delay of 45.2 minutes. The destination airport in Philadelphia serves over 28 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 St. Thomas (STT) → Philadelphia (PHL) route is operated by American Airlines. Across 128 flights monitored in recent months, 71% arrived on time (within 15 min of schedule), with an average delay of 37 minutes. The cancellation rate is 0.78%. FlightGuard's average computed risk is 13.5/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Philadelphia the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from St. Thomas the average ATFM delay is 2.0 minutes.
Heading to Philadelphia: what to expect in this direction
Flying from St. Thomas (STT) to Philadelphia (PHL) heads north for about 2,589 km, a flight time of roughly 3h 39m.
Departures from St. Thomas on this leg cluster in the morning window: about 55% of STT-PHL flights take off then.
Air-traffic congestion: departing St. Thomas the average ATFM delay is 2.0 min (atfm); arriving into Philadelphia it is 2.0 min (atfm).
Across 128 tracked STT-PHL flights, 71% left on time with an average delay of 37 min and a 0.8% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| American Airlines (AA) | 74% | 16 min | 3.0% |
Airlines operating STT-PHL
Airports
Frequently asked questions about STT-PHL
On the St. Thomas (STT) -> Philadelphia (PHL) route, on-time performance is 71% with an average delay of 37 minutes, based on 128 tracked flights.
The cancellation rate on St. Thomas-Philadelphia 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 Philadelphia, 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.
