Phoenix (PHX) to Dulles (IAD) flights
United Airlines flies nonstop from Phoenix Sky Harbor International Airport to Washington Dulles International Airport, with about 7 flights a week in July 2026. The 1,956-mile flight takes about 4h 10m gate to gate.
- Distance
- 1,956 mi · 3,148 km
- Flight time
- 4h 10m
- Airlines
- 1
- Seats filled
- 82%
Airlines flying PHX to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 7 | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737-800 | 107,292 | 4h 11m |
| Southwest AirlinesSeasonal or ended | n/a | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 41,640 | 4h 6m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
PHX to IAD flight schedule
1 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:55am and the last at 8:55am. 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 1873United Airlines | 8:55am | 4:23pm | 31 | 91% |
Is PHX to IAD on time?
From September 2025 to August 2026, 86% of 979 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 11pm were the most punctual (95%), those around 10am the least (75%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (44%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 704 | 91% | 6 min | 0.7% |
| Southwest Airlines | 275 | 74% | 11 min | 0.4% |
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 |
|---|---|---|---|
| 7am to 8am | 82 | 93% | |
| 8am to 9am | 288 | 85% | |
| 9am to 10am | 80 | 88% | |
| 10am to 11am | 88 | 75% | |
| 11am to 12pm | 73 | 82% | |
| 12pm to 1pm | 23 | 57% | |
| 1pm to 2pm | 126 | 89% | |
| 3pm to 4pm | 119 | 91% | |
| 11pm to 12am | 84 | 95% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 88 | 12,115 | |
| September 2025 | 88 | 12,788 | |
| October 2025 | 98 | 14,439 | |
| November 2025 | 109 | 15,573 | |
| December 2025 | 109 | 15,120 | |
| January 2026 | 96 | 11,856 | |
| February 2026 | 81 | 10,891 | |
| March 2026 | 115 | 17,164 | |
| April 2026 | 91 | 13,796 | |
| May 2026 | 94 | 14,745 | |
| June 2026 | 34 | 5,742 | |
| July 2026 | 31 | 5,200 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.