Dulles (IAD) to Dayton (DAY) flights
CommuteAir, GoJet Airlines fly nonstop from Washington Dulles International Airport to James M. Cox Dayton International Airport, with about 19 flights a week in July 2026. The 367-mile flight takes about 1h 37m gate to gate.
- Distance
- 367 mi · 591 km
- Flight time
- 1h 37m
- Airlines
- 2
- Seats filled
- 84%
Airlines flying IAD to DAY
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| CommuteAir | 13 | Embraer ERJ-145 | 36,215 | 1h 37m |
| GoJet Airlines | 7 | Bombardier CRJ550 | 3,199 | 1h 33m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to DAY flight schedule
4 flight numbers flew this route in August 2026, 3 of them almost daily. The first usually leaves at 8:13am 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 4327United Airlines · operated by CommuteAir | 8:13am | 9:47am | 21 | 87% |
| UA 4188United Airlines · operated by GoJet Airlines | 8:15am | 9:48am | 10 | 80% |
| UA 4241United Airlines · operated by CommuteAir | 12:40pm | 2:15pm | 28 | 81% |
| UA 4274United Airlines · operated by CommuteAir | 5:25pm | 7:03pm | 28 | 79% |
Is IAD to DAY on time?
From September 2025 to August 2026, 81% of 948 flights arrived within 15 minutes of schedule and 1.5% were cancelled. Flights leaving around 8am were the most punctual (84%), those around 5pm the least (79%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (42%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 948 | 81% | 16 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 | 244 | 84% | |
| 12pm to 1pm | 362 | 80% | |
| 5pm to 6pm | 342 | 79% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 93 | 3,938 | |
| September 2025 | 90 | 3,808 | |
| October 2025 | 91 | 3,708 | |
| November 2025 | 75 | 2,874 | |
| December 2025 | 74 | 3,128 | |
| January 2026 | 65 | 2,580 | |
| February 2026 | 55 | 2,337 | |
| March 2026 | 64 | 2,805 | |
| April 2026 | 73 | 3,154 | |
| May 2026 | 91 | 3,751 | |
| June 2026 | 84 | 3,664 | |
| July 2026 | 86 | 3,706 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.