Buffalo (BUF) to Dulles (IAD) flights
CommuteAir, Republic Airline, GoJet Airlines fly nonstop from Buffalo Niagara International Airport to Washington Dulles International Airport, with about 23 flights a week in July 2026. The 283-mile flight takes about 1h 18m gate to gate.
- Distance
- 283 mi · 455 km
- Flight time
- 1h 18m
- Airlines
- 3
- Seats filled
- 86%
Airlines flying BUF to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| CommuteAir | 11 | Embraer ERJ-145 | 29,703 | 1h 20m |
| Republic Airline | 9 | Embraer E175, Embraer E170 | 8,687 | 1h 15m |
| GoJet Airlines | 2 | Bombardier CRJ550 | 8,652 | 1h 16m |
| Mesa AirlinesSeasonal or ended | n/a | Embraer E175 | 6,225 | 1h 11m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BUF to IAD flight schedule
8 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 6:12am and the last at 7:59pm. 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 4190United Airlines · operated by GoJet Airlines | 6:12am | 7:35am | 15 | 100% |
| UA 3668United Airlines · operated by Republic Airline | 6:15am | 7:34am | 6 | 89% |
| UA 4192United Airlines · operated by GoJet Airlines | 10:30am | 11:50am | 21 | 80% |
| UA 3430United Airlines · operated by Republic Airline | 10:34am | 11:50am | 8 | 86% |
| UA 4291United Airlines · operated by CommuteAir | 2:53pm | 4:13pm | 26 | 77% |
| UA 4270United Airlines · operated by CommuteAir | 7:52pm | 9:15pm | 10 | 81% |
| UA 4378United Airlines · operated by CommuteAir | 7:59pm | 9:19pm | 12 | 92% |
| UA 4539United Airlines · operated by GoJet Airlines | 7:59pm | 9:17pm | 6 | 83% |
Is BUF to IAD on time?
From September 2025 to August 2026, 83% of 1,150 flights arrived within 15 minutes of schedule and 2.4% were cancelled. Flights leaving around 6am were the most punctual (89%), those around 3pm the least (73%). Most delay time was caused by late-arriving aircraft (56%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,150 | 83% | 20 min | 2.4% |
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 |
|---|---|---|---|
| 6am to 7am | 171 | 89% | |
| 9am to 10am | 36 | 85% | |
| 10am to 11am | 324 | 87% | |
| 2pm to 3pm | 245 | 79% | |
| 3pm to 4pm | 86 | 73% | |
| 7pm to 8pm | 264 | 82% | |
| 8pm to 9pm | 24 | 92% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 113 | 5,847 | |
| September 2025 | 99 | 5,186 | |
| October 2025 | 89 | 4,051 | |
| November 2025 | 84 | 3,742 | |
| December 2025 | 73 | 3,305 | |
| January 2026 | 62 | 2,881 | |
| February 2026 | 68 | 3,220 | |
| March 2026 | 107 | 4,513 | |
| April 2026 | 106 | 4,558 | |
| May 2026 | 116 | 5,962 | |
| June 2026 | 105 | 4,889 | |
| July 2026 | 102 | 5,645 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.