Washington Dulles International ⇄ Cyril E King IAD–STT
Airlines flew 664 flights between Washington Dulles International IAD in Washington, DC and Cyril E King STT in Charlotte Amalie, VI in the twelve months to July 2026, both directions together: 91,857 passengers in 110,224 seats, 83% of them filled. 1,606 miles, about 209 minutes in the air, on 1 airline: United Air Lines Inc. (664). Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 62 |
| 2/25 | 56 |
| 3/25 | 62 |
| 4/25 | 60 |
| 5/25 | 62 |
| 6/25 | 60 |
| 7/25 | 60 |
| 8/25 | 37 |
| 9/25 | 8 |
| 10/25 | 20 |
| 11/25 | 61 |
| 12/25 | 90 |
| 1/26 | 69 |
| 2/26 | 55 |
| 3/26 | 63 |
| 4/26 | 59 |
| 5/26 | 66 |
| 6/26 | 67 |
| 7/26 | 69 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 8,134 |
| 2/25 | 7,558 |
| 3/25 | 8,306 |
| 4/25 | 8,170 |
| 5/25 | 8,523 |
| 6/25 | 8,579 |
| 7/25 | 8,358 |
| 8/25 | 4,887 |
| 9/25 | 708 |
| 10/25 | 2,343 |
| 11/25 | 8,384 |
| 12/25 | 12,094 |
| 1/26 | 9,261 |
| 2/26 | 7,709 |
| 3/26 | 8,720 |
| 4/26 | 8,257 |
| 5/26 | 9,555 |
| 6/26 | 9,919 |
| 7/26 | 10,020 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Air Lines Inc. UA | 664 | 91,857 | 83% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing B737 Max 800 | 664 | 166 | 91,857 |
IAD → STT this direction alone · flown January 2025 to July 2026
333 flights of 336 scheduled, 47,488 passengers in 55,278 seats. United Air Lines Inc. 333.
STT → IAD this direction alone · flown January 2025 to July 2026
331 flights of 336 scheduled, 44,369 passengers in 54,946 seats. United Air Lines Inc. 331.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Washington Dulles International IAD and Cyril E King STT; all routes.