Is UA4578 delayed?
Yes — UA4578 landed in Harrisburg 125 min late, at 16:04 on Sep 29 (as of Sep 29, 20:06 UTC).
Usually on time: arrived within 15 min of schedule on 14 of the last 16 flights.
125 min late
Official source · Updated
Departure
Dulles
IAD
Actual
Scheduled 13:15
Sep 29
Arrival
Harrisburg
MDT
Actual
Scheduled 13:59
Sep 29
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
Market settled: Delayed.
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 125 min late
Dulles → Harrisburg
- 13 min early
Dulles → Harrisburg
- 8 min early
Dulles → Harrisburg
- 27 min early
Dulles → Harrisburg
- 16 min early
Dulles → Hebron
Is UA4578 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 29, 2026Arrived | Dulles | Harrisburg | 125 | |
| Sep 28, 2026Arrived | Dulles | Harrisburg | -13 | |
| Sep 27, 2026Arrived | Dulles | Harrisburg | -8 | |
| Sep 26, 2026Arrived | Dulles | Harrisburg | -27 | |
| Sep 25, 2026Arrived | Dulles | Hebron | -16 | |
| Sep 24, 2026Arrived | Dulles | Harrisburg | -18 | |
| Sep 23, 2026Arrived | Dulles | Greenville | -11 | |
| Sep 22, 2026Arrived | Dulles | Greenville | -7 | |
| Sep 21, 2026Arrived | Dulles | Greenville | 85 | |
| Sep 18, 2026Arrived | Dulles | Greenville | -5 | |
| Sep 17, 2026Arrived | Dulles | Greenville | -21 | |
| Sep 11, 2026Arrived | Dulles | Greenville | -20 | |
| Sep 9, 2026Arrived | Dulles | Greenville | -15 | |
| Sep 8, 2026Arrived | Dulles | Greenville | -13 | |
| Sep 7, 2026Arrived | Rochester | Dulles | 0 | |
| Sep 4, 2026Arrived | Rochester | Dulles | -22 |
Email me if UA4578 runs late
We email you if your next UA4578 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.