Pittsburgh (PIT) to Dulles (IAD) flights
Republic Airline, Mesa Airlines, United Airlines, GoJet Airlines fly nonstop from Pittsburgh International Airport to Washington Dulles International Airport, with about 26 flights a week in July 2026. The 182-mile flight takes about 1h 6m gate to gate.
- Distance
- 182 mi · 293 km
- Flight time
- 1h 6m
- Airlines
- 4
- Seats filled
- 73%
Airlines flying PIT to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Republic Airline | 12 | Embraer E175, Embraer E170 | 42,450 | 1h 8m |
| Mesa Airlines | 7 | Embraer E175 | 9,819 | 1h 8m |
| United Airlines | 6 | Boeing 737-700 / MAX 7, Airbus A319, Airbus A320-100/200 | 47,179 | 1h 3m |
| GoJet Airlines | <1 | Bombardier CRJ550 | 1,070 | 1h 6m |
| CommuteAirSeasonal or ended | n/a | Embraer ERJ-145 | 1,738 | 1h 11m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
PIT to IAD flight schedule
7 flight numbers flew this route in August 2026, 4 of them almost daily. The first usually leaves at 6:10am 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 3679United Airlines · operated by Republic Airline | 6:10am | 7:19am | 31 | 97% |
| UA 4279United Airlines · operated by CommuteAir | 10:25am | 11:33am | 20 | 90% |
| UA 6184United Airlines · operated by Mesa Airlines | 10:30am | 11:42am | 10 | 91% |
| UA 2607United Airlines | 3:06pm | 4:12pm | 8 | 73% |
| UA 452United Airlines | 3:20pm | 4:20pm | 21 | 76% |
| UA 3449United Airlines · operated by Republic Airline | 7:59pm | 9:18pm | 9 | 74% |
| UA 3667United Airlines · operated by Republic Airline | 7:59pm | 9:13pm | 21 | 81% |
Is PIT to IAD on time?
From September 2025 to August 2026, 88% of 1,455 flights arrived within 15 minutes of schedule and 1.4% were cancelled. Flights leaving around 6am were the most punctual (97%), those around 3pm the least (75%). Most delay time was caused by late-arriving aircraft (46%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,455 | 88% | 10 min | 1.4% |
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 | 361 | 97% | |
| 10am to 11am | 365 | 92% | |
| 2pm to 3pm | 133 | 80% | |
| 3pm to 4pm | 232 | 75% | |
| 7pm to 8pm | 199 | 82% | |
| 8pm to 9pm | 165 | 89% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 124 | 7,481 | |
| September 2025 | 120 | 9,189 | |
| October 2025 | 124 | 9,231 | |
| November 2025 | 118 | 8,352 | |
| December 2025 | 126 | 8,882 | |
| January 2026 | 118 | 7,026 | |
| February 2026 | 110 | 8,021 | |
| March 2026 | 127 | 9,486 | |
| April 2026 | 120 | 9,091 | |
| May 2026 | 122 | 8,694 | |
| June 2026 | 119 | 8,452 | |
| July 2026 | 116 | 8,419 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.