Is UAL4454 delayed?
Service date: · Scheduled departure date (UTC)
Arrived
15 min early
Official source · Updated
Departure
St Louis
STL
Actual
Scheduled 17:59
Sep 5
Arrival
Dulles
IAD
Actual
Scheduled 15:45
Sep 5
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
STLIAD
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 148 min late
STL → IAD
- 19 min early
STL → IAD
- 64 min late
STL → IAD
- 19 min late
STL → IAD
- 18 min late
STL → IAD
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 13
- Arrivals over 15 minutes late
- 7
- Observed cancellations
- 0
- Observed occurrences
- 13
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 17, 2026Arrived | St Louis | Dulles | 148 | |
| Sep 16, 2026Arrived | St Louis | Dulles | -19 | |
| Sep 15, 2026Arrived | St Louis | Dulles | 64 | |
| Sep 14, 2026Arrived | St Louis | Dulles | 19 | |
| Sep 13, 2026Arrived | St Louis | Dulles | 18 | |
| Sep 12, 2026Arrived | St Louis | Dulles | -18 | |
| Sep 11, 2026Arrived | St Louis | Dulles | -20 | |
| Sep 9, 2026Arrived | St Louis | Dulles | 93 | |
| Sep 8, 2026Arrived | St Louis | Dulles | 76 | |
| Sep 7, 2026Arrived | St Louis | Dulles | -18 | |
| Sep 6, 2026Arrived | St Louis | Dulles | -14 | |
| Sep 5, 2026Arrived | St Louis | Dulles | -15 | |
| Sep 4, 2026Arrived | St Louis | Dulles | 268 |