Dulles (IAD) to Charlotte Amalie (STT) flights
United Airlines flies nonstop from Washington Dulles International Airport to Cyril E. King Airport, with about 8 flights a week in July 2026. The 1,606-mile flight takes about 3h 55m gate to gate.
- Distance
- 1,606 mi · 2,585 km
- Flight time
- 3h 55m
- Airlines
- 1
- Seats filled
- 86%
Airlines flying IAD to STT
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 8 | Boeing 737 MAX 8 | 47,488 | 3h 55m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to STT flight schedule
1 flight numbers flew this route in August 2026. The first usually leaves at 8:15am and the last at 8:15am. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| UA 1443United Airlines | 8:15am | 12:20pm | 13 | 87% |
Is IAD to STT on time?
From September 2025 to August 2026, 88% of 331 flights arrived within 15 minutes of schedule and 0.9% were cancelled. Flights leaving around 12pm were the most punctual (97%), those around 8am the least (88%). Most delay time was caused by air traffic control and airport congestion (74%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 331 | 88% | 5 min | 0.9% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 8am to 9am | 289 | 88% | |
| 9am to 10am | 11 | 82% | |
| 12pm to 1pm | 31 | 97% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 19 | 2,516 | |
| September 2025 | 4 | 320 | |
| October 2025 | 10 | 1,383 | |
| November 2025 | 30 | 4,327 | |
| December 2025 | 45 | 6,626 | |
| January 2026 | 34 | 4,432 | |
| February 2026 | 28 | 3,950 | |
| March 2026 | 31 | 4,423 | |
| April 2026 | 30 | 4,165 | |
| May 2026 | 33 | 4,941 | |
| June 2026 | 34 | 5,202 | |
| July 2026 | 35 | 5,203 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.