Dulles (IAD) to Atlanta (ATL) flights
Delta Air Lines, United Airlines, Frontier Airlines fly nonstop from Washington Dulles International Airport to Hartsfield Jackson Atlanta International Airport, with about 77 flights a week in July 2026. The 534-mile flight takes about 1h 52m gate to gate.
- Distance
- 534 mi · 859 km
- Flight time
- 1h 52m
- Airlines
- 3
- Seats filled
- 76%
Airlines flying IAD to ATL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Delta Air Lines | 42 | Airbus A319, Airbus A220-300, Airbus A320-100/200 | 243,191 | 1h 48m |
| United Airlines | 22 | Airbus A319, Boeing 737-700 / MAX 7, Boeing 737 MAX 8 | 114,060 | 1h 53m |
| Frontier Airlines | 13 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 99,165 | 2h 7m |
| Mesa AirlinesSeasonal or ended | n/a | Embraer E175 | 4,618 | 1h 49m |
| Republic AirlineSeasonal or ended | n/a | Embraer E175, Embraer E170 | 1,367 | 1h 55m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to ATL flight schedule
15 flight numbers flew this route in August 2026, 11 of them almost daily. The first usually leaves at 6:00am and the last at 10:44pm. 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) |
|---|---|---|---|---|
| DL 2127Delta Air Lines | 6:00am | 7:43am | 31 | 88% |
| F9 4707Frontier Airlines | 6:20am | 9:59am | 31 | 69% |
| UA 2739United Airlines | 8:19am | 10:17am | 27 | 89% |
| DL 3080Delta Air Lines | 8:28am | 10:19am | 31 | 84% |
| DL 1324Delta Air Lines | 10:16am | 12:00pm | 31 | 84% |
| DL 1444Delta Air Lines | 12:30pm | 2:20pm | 27 | 80% |
| UA 471United Airlines | 12:40pm | 2:38pm | 30 | 85% |
| DL 2135Delta Air Lines | 3:03pm | 4:54pm | 31 | 72% |
| UA 2081United Airlines | 5:31pm | 7:29pm | 29 | 69% |
| DL 1695Delta Air Lines | 5:47pm | 7:55pm | 30 | 72% |
| DL 2902Delta Air Lines | 7:26pm | 9:27pm | 17 | 74% |
| F9 3691Frontier Airlines | 8:33pm | 10:44pm | 21 | 53% |
| F9 4409Frontier Airlines | 8:33pm | 10:44pm | 10 | 54% |
| UA 1635United Airlines | 10:28pm | 12:30am | 10 | 75% |
| UA 4043United Airlines · operated by Mesa Airlines | 10:44pm | 12:45am | 12 | 82% |
Is IAD to ATL on time?
From September 2025 to August 2026, 78% of 4,099 flights arrived within 15 minutes of schedule and 2.3% were cancelled. Flights leaving around 8am were the most punctual (88%), those around 5pm the least (69%). Most delay time was caused by late-arriving aircraft (38%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 2,233 | 80% | 20 min | 2.8% |
| United Airlines | 1,206 | 80% | 16 min | 0.8% |
| Frontier Airlines | 660 | 68% | 26 min | 3.2% |
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 | 503 | 82% | |
| 7am to 8am | 313 | 75% | |
| 8am to 9am | 409 | 88% | |
| 10am to 11am | 323 | 84% | |
| 12pm to 1pm | 714 | 82% | |
| 3pm to 4pm | 313 | 77% | |
| 5pm to 6pm | 646 | 69% | |
| 7pm to 8pm | 244 | 72% | |
| 8pm to 9pm | 99 | 51% | |
| 10pm to 11pm | 222 | 81% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 344 | 39,530 | |
| September 2025 | 335 | 35,838 | |
| October 2025 | 359 | 42,373 | |
| November 2025 | 332 | 35,455 | |
| December 2025 | 327 | 38,888 | |
| January 2026 | 269 | 27,723 | |
| February 2026 | 258 | 29,659 | |
| March 2026 | 299 | 34,839 | |
| April 2026 | 350 | 38,699 | |
| May 2026 | 400 | 49,737 | |
| June 2026 | 373 | 46,599 | |
| July 2026 | 342 | 43,219 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.