Flights St. Thomas → San Juan
STT → SJU
Route overview
The flight route from St. Thomas to San Juan operates with a mix of aircraft including the Embraer 190, Saab SF340A/B, and De Havilland Canada DHC-6 Twin Otter, serving an airport that sees over ten million passengers annually. With seventy-seven percent of flights arriving on time, this route experiences an average delay of approximately thirteen minutes per flight across the total of 177 scheduled flights.
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) → San Juan (SJU) route is operated by JetBlue Airways, United Airlines. Across 235 flights monitored in recent months, 79% arrived on time (within 15 min of schedule), with an average delay of 11 minutes. The cancellation rate is 2.13%. FlightGuard's average computed risk is 18.8/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At San Juan 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 San Juan: what to expect in this direction
Flying from St. Thomas (STT) to San Juan (SJU) heads west for about 109 km, a flight time of roughly 33m.
Departures from St. Thomas on this leg cluster in the morning window: about 63% of STT-SJU flights take off then.
Air-traffic congestion: departing St. Thomas the average ATFM delay is 2.0 min (atfm); arriving into San Juan it is 2.0 min (atfm).
Across 235 tracked STT-SJU flights, 79% left on time with an average delay of 11 min and a 2.1% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
| JetBlue Airways (B6) | 72% | 14 min | 1.7% |
Airlines operating STT-SJU
Airports
Frequently asked questions about STT-SJU
On the St. Thomas (STT) -> San Juan (SJU) route, on-time performance is 79% with an average delay of 11 minutes, based on 235 tracked flights.
The cancellation rate on St. Thomas-San Juan is 2.13% across 235 monitored flights.
The route is operated by 2 airlines: JetBlue Airways, United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at San Juan, 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.
