Is UA4423 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
140 min late
Official source · Updated
Departure
St Louis
STL
Actual
Scheduled 11:20
Sep 5
Arrival
Chicago
ORD
Actual
Scheduled 07:14
Sep 5
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
STLORD
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 28 min late
STL → ORD
- 348 min late
ORD → CAE
- 35 min early
STL → ORD
- 14 min early
ORD → CAE
- 21 min early
STL → ORD
Flight history and details
Aug 21, 2026 — Sep 20, 2026
- Observed arrivals
- 19
- Arrivals over 15 minutes late
- 3
- Observed cancellations
- 2
- Observed occurrences
- 21
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 | St Louis | Chicago | 28 | |
| Sep 19, 2026Arrived | Chicago | Columbia | 348 | |
| Sep 19, 2026Cancelled | St Louis | Chicago | Not available | Not available |
| Sep 18, 2026Arrived | St Louis | Chicago | -35 | |
| Sep 17, 2026Cancelled | St Louis | Chicago | Not available | Not available |
| Sep 16, 2026Arrived | Chicago | Columbia | -14 | |
| Sep 16, 2026Arrived | St Louis | Chicago | -21 | |
| Sep 15, 2026Arrived | Chicago | Columbia | -17 | |
| Sep 14, 2026Arrived | St Louis | Chicago | -20 | |
| Sep 13, 2026Arrived | St Louis | Chicago | -15 | |
| Sep 12, 2026Arrived | Chicago | Columbia | -36 | |
| Sep 12, 2026Arrived | St Louis | Chicago | -11 | |
| Sep 11, 2026Arrived | St Louis | Chicago | -18 | |
| Sep 10, 2026Arrived | St Louis | Chicago | -18 | |
| Sep 9, 2026Arrived | Chicago | Columbia | -63 | |
| Sep 9, 2026Arrived | St Louis | Chicago | -6 | |
| Sep 8, 2026Arrived | Corpus Christi | Houston | 8 | |
| Sep 7, 2026Arrived | St Louis | Chicago | -20 | |
| Sep 6, 2026Arrived | St Louis | Chicago | -20 | |
| Sep 5, 2026Arrived | St Louis | Chicago | 140 | |
| Sep 4, 2026Arrived | St Louis | Chicago | -24 |