Salt Lake City (SLC) to Dulles (IAD) flights
Delta Air Lines, United Airlines fly nonstop from Salt Lake City International Airport to Washington Dulles International Airport, with about 14 flights a week in July 2026. The 1,827-mile flight takes about 3h 56m gate to gate.
- Distance
- 1,827 mi · 2,940 km
- Flight time
- 3h 56m
- Airlines
- 2
- Seats filled
- 85%
Airlines flying SLC to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 7 | Boeing 737-800, Boeing 737-900ER, Airbus A321 | 49,435 | 3h 51m |
| United Airlines | 7 | Boeing 737-700 / MAX 7, Boeing 737 MAX 8, Airbus A319 | 43,379 | 4h 1m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SLC to IAD flight schedule
3 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 9:20am and the last at 5:40pm. 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 2264United Airlines | 9:20am | 3:31pm | 10 | 81% |
| UA 1322United Airlines | 9:21am | 3:40pm | 10 | 95% |
| DL 847Delta Air Lines | 5:40pm | 11:39pm | 31 | 81% |
Is SLC to IAD on time?
From September 2025 to August 2026, 84% of 702 flights arrived within 15 minutes of schedule and 1.7% were cancelled. Flights leaving around 9am were the most punctual (89%), those around 5pm the least (80%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (60%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 364 | 81% | 12 min | 1.6% |
| United Airlines | 338 | 89% | 9 min | 1.8% |
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 |
|---|---|---|---|
| 9am to 10am | 106 | 89% | |
| 10am to 11am | 147 | 88% | |
| 5pm to 6pm | 330 | 80% | |
| 6pm to 7pm | 22 | 96% | |
| 11pm to 12am | 85 | 88% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 63 | 9,047 | |
| September 2025 | 61 | 8,141 | |
| October 2025 | 62 | 7,966 | |
| November 2025 | 59 | 7,294 | |
| December 2025 | 45 | 5,701 | |
| January 2026 | 58 | 7,192 | |
| February 2026 | 54 | 6,801 | |
| March 2026 | 63 | 7,906 | |
| April 2026 | 60 | 8,159 | |
| May 2026 | 61 | 8,553 | |
| June 2026 | 60 | 7,919 | |
| July 2026 | 60 | 8,135 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.