Flights St. Thomas → Washington
STT → IAD
Route overview
The flight route from St. Thomas to Washington operates with an 83% on-time performance rate, with an average delay of 6.8 minutes when flights are not on time. Over the course of a year, this route sees 89 total flights using Boeing 737-700 aircraft, serving one of the world's busiest airports in terms of passenger traffic, which handles approximately 21,376,896 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) → Washington (IAD) route is operated by United Airlines. Across 120 flights monitored in recent months, 85% arrived on time (within 15 min of schedule), with an average delay of 6 minutes. The cancellation rate is 0.00%. FlightGuard's average computed risk is 13.7/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Washington 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 Washington: what to expect in this direction
Flying from St. Thomas (STT) to Washington (IAD) heads north-west 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 72% of STT-IAD flights take off then.
Air-traffic congestion: departing St. Thomas the average ATFM delay is 2.0 min (atfm); arriving into Washington it is 2.0 min (atfm).
Across 120 tracked STT-IAD flights, 85% left on time with an average delay of 6 min and a 0.0% cancellation rate.
Route facts
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
Airlines operating STT-IAD
Airports
Frequently asked questions about STT-IAD
On the St. Thomas (STT) -> Washington (IAD) route, on-time performance is 85% with an average delay of 6 minutes, based on 120 tracked flights.
The cancellation rate on St. Thomas-Washington is 0.00% across 120 monitored flights.
The route is operated by 1 airline: United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Washington, 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.
