Dulles (IAD) to San Francisco (SFO) flights
United Airlines flies nonstop from Washington Dulles International Airport to San Francisco International Airport, with about 47 flights a week in July 2026. The 2,418-mile flight takes about 5h 51m gate to gate.
- Distance
- 2,418 mi · 3,891 km
- Flight time
- 5h 51m
- Airlines
- 1
- Seats filled
- 84%
Airlines flying IAD to SFO
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 47 | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 787-9 Dreamliner | 463,971 | 5h 51m |
| Alaska AirlinesSeasonal or ended | n/a | Boeing 737-900ER, Boeing 737 MAX 9 | 5,075 | 5h 33m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to SFO flight schedule
9 flight numbers flew this route in August 2026, 6 of them almost daily. The first usually leaves at 6:42am and the last at 10:10pm. 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 1095United Airlines | 6:42am | 9:30am | 28 | 85% |
| UA 1147United Airlines | 8:35am | 11:12am | 31 | 84% |
| UA 1773United Airlines | 9:45am | 12:30pm | 18 | 72% |
| UA 1434United Airlines | 12:40pm | 3:28pm | 31 | 77% |
| UA 2862United Airlines | 2:47pm | 5:35pm | 28 | 81% |
| UA 1757United Airlines | 5:48pm | 8:30pm | 31 | 59% |
| UA 1338United Airlines | 6:35pm | 9:28pm | 12 | 42% |
| UA 2075United Airlines | 8:00pm | 10:51pm | 7 | 48% |
| UA 367United Airlines | 10:10pm | 12:59am | 28 | 83% |
Is IAD to SFO on time?
From September 2025 to August 2026, 78% of 2,688 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 6am were the most punctual (85%), those around 5pm the least (50%). Most delay time was caused by air traffic control and airport congestion (42%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 2,688 | 78% | 17 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 |
|---|---|---|---|
| 6am to 7am | 318 | 85% | |
| 8am to 9am | 365 | 85% | |
| 9am to 10am | 91 | 80% | |
| 12pm to 1pm | 365 | 78% | |
| 2pm to 3pm | 224 | 83% | |
| 3pm to 4pm | 138 | 78% | |
| 4pm to 5pm | 232 | 84% | |
| 5pm to 6pm | 211 | 50% | |
| 6pm to 7pm | 288 | 69% | |
| 8pm to 9pm | 71 | 48% | |
| 10pm to 11pm | 343 | 83% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 253 | 41,459 | |
| September 2025 | 206 | 36,230 | |
| October 2025 | 246 | 43,547 | |
| November 2025 | 232 | 39,924 | |
| December 2025 | 245 | 41,245 | |
| January 2026 | 199 | 29,761 | |
| February 2026 | 189 | 28,213 | |
| March 2026 | 208 | 36,219 | |
| April 2026 | 230 | 38,809 | |
| May 2026 | 267 | 46,879 | |
| June 2026 | 235 | 44,003 | |
| July 2026 | 209 | 42,757 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.