Is UA4577 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (UTC)
32 min late
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Harrisburg
MDT
Actual
Sep 20
Arrival
Chicago
ORD
Scheduled
Sep 19
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Service date: · Scheduled departure date (UTC)
351 min late
Official source · Updated
Departure
Harrisburg
MDT
Scheduled
Sep 19
Arrival
Chicago
ORD
Actual
Sep 19
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
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 22, 2026 — Sep 21, 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 |