San Antonio (SAT) to Dulles (IAD) flights
United Airlines flies nonstop from San Antonio International Airport to Washington Dulles International Airport, with about 14 flights a week in July 2026. The 1,362-mile flight takes about 3h 13m gate to gate.
- Distance
- 1,362 mi · 2,192 km
- Flight time
- 3h 13m
- Airlines
- 1
- Seats filled
- 81%
Airlines flying SAT to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 13 | Boeing 737-900ER, Boeing 737-700 / MAX 7, Boeing 737 MAX 9 | 81,849 | 3h 12m |
| Mesa AirlinesSeasonal or ended | n/a | Embraer E175 | 2,914 | 3h 23m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SAT to IAD flight schedule
3 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 7:00am and the last at 12:15pm. 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 471United Airlines | 7:00am | 11:20am | 25 | 95% |
| UA 2250United Airlines | 12:01pm | 4:28pm | 8 | 91% |
| UA 2448United Airlines | 12:15pm | 4:35pm | 21 | 95% |
Is SAT to IAD on time?
From September 2025 to August 2026, 93% of 688 flights arrived within 15 minutes of schedule and 0.6% were cancelled. Flights leaving around 7am were the most punctual (95%), those around 12pm the least (91%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (48%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 688 | 93% | 8 min | 0.6% |
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 | 323 | 95% | |
| 11am to 12pm | 50 | 94% | |
| 12pm to 1pm | 315 | 91% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 54 | 6,222 | |
| September 2025 | 52 | 6,475 | |
| October 2025 | 54 | 6,841 | |
| November 2025 | 60 | 7,587 | |
| December 2025 | 62 | 7,959 | |
| January 2026 | 51 | 6,168 | |
| February 2026 | 51 | 5,685 | |
| March 2026 | 61 | 7,912 | |
| April 2026 | 58 | 7,088 | |
| May 2026 | 54 | 7,432 | |
| June 2026 | 61 | 8,047 | |
| July 2026 | 61 | 7,469 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.