Is UA4577 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
129 min late
Official source · Updated
Departure
Harrisburg
MDT
Actual
Scheduled 18:29
Sep 15
Arrival
Chicago
ORD
Actual
Scheduled 15:10
Sep 15
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
MDTORD
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 33 min early
MDT → ORD
- 144 min late
MDT → ORD
- 9 min late
MDT → ORD
- 129 min late
MDT → ORD
- 220 min late
MDT → ORD
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 14
- Arrivals over 15 minutes late
- 4
- Observed cancellations
- 0
- Observed occurrences
- 22
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 18, 2026Arrived | Harrisburg | Chicago | -33 | |
| Sep 17, 2026Arrived | Harrisburg | Chicago | 144 | |
| Sep 16, 2026Arrived | Harrisburg | Chicago | 9 | |
| Sep 15, 2026Arrived | Harrisburg | Chicago | 129 | |
| Sep 14, 2026Arrived | Harrisburg | Chicago | 220 | |
| Sep 13, 2026Arrived | Harrisburg | Chicago | 33 | |
| Sep 12, 2026Arrived | Harrisburg | Chicago | -10 | |
| Sep 11, 2026Arrived | Harrisburg | Chicago | -17 | |
| Sep 10, 2026Arrived | Harrisburg | Chicago | -33 | |
| Sep 9, 2026Arrived | Harrisburg | Chicago | -22 | |
| Sep 8, 2026Arrived | Harrisburg | Chicago | -47 | |
| Sep 7, 2026Arrived | Dulles | Roanoke | -7 | |
| Sep 4, 2026Arrived | Dulles | Roanoke | -12 | |
| Aug 29, 2026Arrived | Dulles | Roanoke | -10 |