Dulles (IAD) to Jacksonville (JAX) flights
United Airlines, Allegiant Air fly nonstop from Washington Dulles International Airport to Jacksonville International Airport, with about 15 flights a week in July 2026. The 631-mile flight takes about 2h 6m gate to gate.
- Distance
- 631 mi · 1,015 km
- Flight time
- 2h 6m
- Airlines
- 2
- Seats filled
- 77%
Airlines flying IAD to JAX
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 13 | Boeing 737-900ER, Boeing 737 MAX 9, Airbus A319 | 73,948 | 2h 5m |
| Allegiant Air | 2 | Airbus A320-100/200, Airbus A319 | 9,592 | 2h 5m |
| Mesa AirlinesSeasonal or ended | n/a | Embraer E175 | 11,284 | 2h 8m |
| Republic AirlineSeasonal or ended | n/a | Embraer E175, Embraer E170 | 6,068 | 2h 7m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to JAX flight schedule
3 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 8:32am and the last at 6:45pm. 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 2084United Airlines | 8:32am | 10:42am | 13 | 90% |
| UA 4063United Airlines · operated by Mesa Airlines | 1:05pm | 3:19pm | 21 | 88% |
| UA 293United Airlines | 6:45pm | 8:54pm | 31 | 72% |
Is IAD to JAX on time?
From September 2025 to August 2026, 83% of 923 flights arrived within 15 minutes of schedule and 0.8% were cancelled. Flights leaving around 8am were the most punctual (90%), those around 6pm the least (71%). Most delay time was caused by late-arriving aircraft (43%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 865 | 85% | 12 min | 0.8% |
| Allegiant Air | 58 | 62% | 47 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 |
|---|---|---|---|
| 8am to 9am | 231 | 90% | |
| 9am to 10am | 98 | 84% | |
| 12pm to 1pm | 106 | 89% | |
| 1pm to 2pm | 47 | 85% | |
| 3pm to 4pm | 36 | 86% | |
| 5pm to 6pm | 319 | 80% | |
| 6pm to 7pm | 85 | 71% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 97 | 7,536 | |
| September 2025 | 89 | 6,470 | |
| October 2025 | 92 | 7,488 | |
| November 2025 | 92 | 8,865 | |
| December 2025 | 84 | 8,364 | |
| January 2026 | 53 | 5,903 | |
| February 2026 | 52 | 6,499 | |
| March 2026 | 95 | 12,844 | |
| April 2026 | 68 | 8,775 | |
| May 2026 | 85 | 10,139 | |
| June 2026 | 70 | 8,915 | |
| July 2026 | 68 | 9,094 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.