Is UA4577 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
22 min early
Official source · Updated
Departure
Harrisburg
MDT
Actual
Scheduled 18:17
Sep 9
Arrival
Chicago
ORD
Actual
Scheduled 15:30
Sep 9
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.
- 57 min late
MDT → ORD
- 351 min late
MDT → ORD
- 33 min early
MDT → ORD
- 144 min late
MDT → ORD
- 9 min late
MDT → ORD
Flight history and details
Aug 21, 2026 — Sep 20, 2026
- Observed arrivals
- 16
- Arrivals over 15 minutes late
- 6
- Observed cancellations
- 0
- Observed occurrences
- 25
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 20, 2026Arrived | Harrisburg | Chicago | 57 | |
| Sep 19, 2026Arrived | Harrisburg | Chicago | 351 | |
| 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 |