United Airlines
Is UA4491 delayed?
No — UA4491 landed in Dulles 23 min early, at 06:47 on Sep 28 (as of Sep 28, 10:47 UTC).
Usually on time: arrived within 15 min of schedule on 17 of the last 17 flights.
23 min early
Official source · Updated
Departure
Harrisburg
MDT
Actual
Scheduled 06:31
Sep 28
Arrival
Dulles
IAD
Actual
Scheduled 07:11
Sep 28
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 23 min early
Harrisburg → Dulles
- 10 min early
Harrisburg → Dulles
- 18 min early
Harrisburg → Dulles
- 20 min early
Harrisburg → Dulles
- 3 min early
Newark → Nantucket
Is UA4491 usually late?
Observation window: Aug 30, 2026 – Sep 29, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
At the airports today
Dulles (IAD) departures
- Left more than 15 min late
- 23 of 169
- Cancelled today
- 0
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 28, 2026Arrived | Harrisburg | Dulles | -23 | |
| Sep 27, 2026Arrived | Harrisburg | Dulles | -10 | |
| Sep 25, 2026Arrived | Harrisburg | Dulles | -18 | |
| Sep 24, 2026Arrived | Harrisburg | Dulles | -20 | |
| Sep 23, 2026Arrived | Newark | Nantucket | -3 | |
| Sep 22, 2026Arrived | Newark | Nantucket | -25 | |
| Sep 21, 2026Cancelled | Newark | Nantucket | Not available | Not available |
| Sep 20, 2026Arrived | Newark | Nantucket | 9 | |
| Sep 18, 2026Arrived | Newark | Nantucket | -14 | |
| Sep 16, 2026Arrived | Newark | Nantucket | 0 | |
| Sep 14, 2026Arrived | Newark | Nantucket | -3 | |
| Sep 12, 2026Arrived | Newark | Nantucket | -30 | |
| Sep 10, 2026Arrived | Newark | Nantucket | -18 | |
| Sep 9, 2026Arrived | Newark | Nantucket | -26 | |
| Sep 8, 2026Arrived | Newark | Nantucket | -4 | |
| Sep 7, 2026Arrived | Newark | Nantucket | -23 | |
| Sep 5, 2026Arrived | Newark | Nantucket | -28 | |
| Sep 4, 2026Arrived | Newark | Nantucket | -25 |
Email me if UA4491 runs late
We email you if your next UA4491 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.