Los Angeles (LAX) to Dulles (IAD) flights
United Airlines, American Airlines fly nonstop from Los Angeles International Airport to Washington Dulles International Airport, with about 56 flights a week in July 2026. The 2,288-mile flight takes about 4h 49m gate to gate.
- Distance
- 2,288 mi · 3,682 km
- Flight time
- 4h 49m
- Airlines
- 2
- Seats filled
- 90%
Airlines flying LAX to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 48 | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 757-300 | 408,767 | 4h 49m |
| American Airlines | 7 | Boeing 737 MAX 8, Boeing 737-800, Airbus A321 | 17,911 | 4h 53m |
| Alaska AirlinesSeasonal or ended | n/a | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737-800 | 3,485 | 5h 20m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
LAX to IAD flight schedule
12 flight numbers flew this route in August 2026, 3 of them almost daily. The first usually leaves at 6:00am and the last at 11:30pm. 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 2081United Airlines | 6:00am | 2:08pm | 8 | 96% |
| UA 2268United Airlines | 8:17am | 4:23pm | 31 | 84% |
| UA 2667United Airlines | 10:47am | 6:50pm | 31 | 91% |
| UA 1635United Airlines | 12:49pm | 8:48pm | 31 | 89% |
| UA 2175United Airlines | 4:15pm | 12:16am | 12 | 75% |
| UA 1573United Airlines | 4:49pm | 12:55am | 10 | 91% |
| AA 1200American Airlines | 9:01pm | 5:00am | 4 | 72% |
| UA 2632United Airlines | 9:20pm | 5:26am | 4 | 94% |
| UA 1917United Airlines | 10:39pm | 6:38am | 18 | 89% |
| UA 349United Airlines | 10:41pm | 6:47am | 7 | 88% |
| UA 418United Airlines | 11:00pm | 6:53am | 18 | 91% |
| UA 2282United Airlines | 11:30pm | 7:33am | 10 | 89% |
Is LAX to IAD on time?
From September 2025 to August 2026, 88% of 2,461 flights arrived within 15 minutes of schedule and 0.5% were cancelled. Flights leaving around 4pm were the most punctual (90%), those around 8am the least (81%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (42%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,341 | 88% | 7 min | 0.6% |
| American Airlines | 120 | 77% | 18 min | 0% |
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 |
|---|---|---|---|
| 6am to 7am | 74 | 96% | |
| 8am to 9am | 366 | 81% | |
| 10am to 11am | 321 | 90% | |
| 11am to 12pm | 63 | 89% | |
| 12pm to 1pm | 238 | 87% | |
| 1pm to 2pm | 198 | 88% | |
| 4pm to 5pm | 262 | 90% | |
| 9pm to 10pm | 332 | 88% | |
| 10pm to 11pm | 235 | 90% | |
| 11pm to 12am | 360 | 87% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 198 | 35,154 | |
| September 2025 | 176 | 28,740 | |
| October 2025 | 201 | 34,120 | |
| November 2025 | 199 | 33,052 | |
| December 2025 | 213 | 35,486 | |
| January 2026 | 167 | 29,437 | |
| February 2026 | 158 | 27,112 | |
| March 2026 | 182 | 34,481 | |
| April 2026 | 225 | 39,941 | |
| May 2026 | 251 | 43,254 | |
| June 2026 | 254 | 45,760 | |
| July 2026 | 248 | 44,158 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.