Dulles (IAD) to Greenville/Greer/Spartanburg (GSP) flights
CommuteAir flies nonstop from Washington Dulles International Airport to Greenville-Spartanburg International Airport, with about 20 flights a week in July 2026. The 384-mile flight takes about 1h 33m gate to gate.
- Distance
- 384 mi · 618 km
- Flight time
- 1h 33m
- Airlines
- 1
- Seats filled
- 89%
Airlines flying IAD to GSP
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| CommuteAir | 20 | Embraer ERJ-145 | 35,128 | 1h 34m |
| GoJet AirlinesSeasonal or ended | n/a | Bombardier CRJ550 | 2,255 | 1h 26m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to GSP flight schedule
6 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 8:15am and the last at 5:25pm. 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 4563United Airlines · operated by GoJet Airlines | 8:15am | 9:48am | 8 | n/a |
| UA 4820United Airlines · operated by CommuteAir | 8:15am | 9:50am | 7 | n/a |
| UA 4961United Airlines · operated by CommuteAir | 8:15am | 9:55am | 10 | 85% |
| UA 4962United Airlines · operated by CommuteAir | 12:40pm | 2:20pm | 8 | 81% |
| UA 4383United Airlines · operated by GoJet Airlines | 12:45pm | 2:19pm | 21 | 71% |
| UA 4963United Airlines · operated by CommuteAir | 5:25pm | 7:05pm | 31 | 78% |
Is IAD to GSP on time?
From September 2025 to August 2026, 81% of 855 flights arrived within 15 minutes of schedule and 1.5% were cancelled. Flights leaving around 8am were the most punctual (86%), those around 5pm the least (78%). Most delay time was caused by late-arriving aircraft (40%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 855 | 81% | 20 min | 1.5% |
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 |
|---|---|---|---|
| 8am to 9am | 158 | 86% | |
| 12pm to 1pm | 332 | 80% | |
| 5pm to 6pm | 365 | 78% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 91 | 3,982 | |
| September 2025 | 70 | 3,262 | |
| October 2025 | 62 | 2,867 | |
| November 2025 | 53 | 2,451 | |
| December 2025 | 56 | 2,494 | |
| January 2026 | 50 | 2,100 | |
| February 2026 | 52 | 2,380 | |
| March 2026 | 64 | 2,960 | |
| April 2026 | 90 | 3,739 | |
| May 2026 | 89 | 3,796 | |
| June 2026 | 85 | 3,858 | |
| July 2026 | 91 | 4,395 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.