Jacksonville (JAX) to Dulles (IAD) flights
United Airlines, Allegiant Air fly nonstop from Jacksonville International Airport to Washington Dulles International Airport, with about 16 flights a week in July 2026. The 631-mile flight takes about 1h 48m gate to gate.
- Distance
- 631 mi · 1,015 km
- Flight time
- 1h 48m
- Airlines
- 2
- Seats filled
- 79%
Airlines flying JAX to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 14 | Boeing 737-900ER, Boeing 737 MAX 9, Airbus A319 | 77,640 | 1h 47m |
| Allegiant Air | 2 | Airbus A320-100/200, Airbus A319 | 9,673 | 1h 54m |
| Mesa AirlinesSeasonal or ended | n/a | Embraer E175 | 10,743 | 1h 49m |
| Republic AirlineSeasonal or ended | n/a | Embraer E175, Embraer E170 | 5,776 | 1h 52m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
JAX to IAD flight schedule
4 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 9:20am and the last at 7:10pm. 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 1434United Airlines | 9:20am | 11:16am | 16 | 90% |
| UA 2826United Airlines | 11:48am | 1:44pm | 10 | 89% |
| UA 1642United Airlines | 11:51am | 1:40pm | 18 | 94% |
| UA 6189United Airlines · operated by Mesa Airlines | 7:10pm | 9:05pm | 21 | 80% |
Is JAX to IAD on time?
From September 2025 to August 2026, 89% of 923 flights arrived within 15 minutes of schedule and 1% were cancelled. Flights leaving around 1pm were the most punctual (94%), those around 6pm the least (89%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (49%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 865 | 92% | 8 min | 1% |
| Allegiant Air | 58 | 55% | 25 min | 0% |
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 |
|---|---|---|---|
| 9am to 10am | 328 | 92% | |
| 11am to 12pm | 104 | 90% | |
| 12pm to 1pm | 110 | 90% | |
| 1pm to 2pm | 145 | 94% | |
| 6pm to 7pm | 150 | 89% | |
| 7pm to 8pm | 41 | 83% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 97 | 8,214 | |
| September 2025 | 89 | 6,859 | |
| October 2025 | 94 | 7,724 | |
| November 2025 | 92 | 9,217 | |
| December 2025 | 84 | 8,336 | |
| January 2026 | 52 | 5,811 | |
| February 2026 | 52 | 6,583 | |
| March 2026 | 94 | 12,597 | |
| April 2026 | 68 | 9,567 | |
| May 2026 | 85 | 10,857 | |
| June 2026 | 70 | 9,260 | |
| July 2026 | 71 | 8,807 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.