Dulles (IAD) to Phoenix (PHX) flights
United Airlines flies nonstop from Washington Dulles International Airport to Phoenix Sky Harbor International Airport, with about 7 flights a week in July 2026. The 1,956-mile flight takes about 4h 54m gate to gate.
- Distance
- 1,956 mi · 3,148 km
- Flight time
- 4h 54m
- Airlines
- 1
- Seats filled
- 82%
Airlines flying IAD to PHX
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 7 | Boeing 737 MAX 9, Boeing 737-800, Boeing 737-900ER | 108,154 | 4h 55m |
| Southwest AirlinesSeasonal or ended | n/a | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 38,449 | 4h 51m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to PHX flight schedule
1 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 6:00pm and the last at 6:00pm. 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 1938United Airlines | 6:00pm | 7:54pm | 31 | 79% |
Is IAD to PHX on time?
From September 2025 to August 2026, 81% of 979 flights arrived within 15 minutes of schedule and 0.8% were cancelled. Flights leaving around 8am were the most punctual (96%), those around 6pm the least (58%). Most delay time was caused by air traffic control and airport congestion (39%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 704 | 85% | 11 min | 0.9% |
| Southwest Airlines | 275 | 71% | 15 min | 0.7% |
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 | 135 | 96% | |
| 12pm to 1pm | 172 | 87% | |
| 1pm to 2pm | 22 | 86% | |
| 3pm to 4pm | 21 | 91% | |
| 4pm to 5pm | 146 | 76% | |
| 5pm to 6pm | 385 | 78% | |
| 6pm to 7pm | 59 | 58% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 88 | 11,947 | |
| September 2025 | 87 | 12,207 | |
| October 2025 | 98 | 14,877 | |
| November 2025 | 107 | 14,926 | |
| December 2025 | 108 | 15,693 | |
| January 2026 | 94 | 11,845 | |
| February 2026 | 81 | 10,420 | |
| March 2026 | 116 | 17,086 | |
| April 2026 | 91 | 12,849 | |
| May 2026 | 96 | 14,582 | |
| June 2026 | 33 | 5,464 | |
| July 2026 | 29 | 4,858 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.