Is UA4454 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled arrival date; departure time unavailable (America/New_York)
6 min early
Official source · Updated
Departure
Dulles
IAD
Scheduled
Not available
Arrival
Philadelphia
PHL
Actual
Sep 25
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
Service date: · Scheduled departure date (UTC)
<1 min early
Official source · Updated
Departure
St Louis
STL
Actual
Sep 25
Arrival
Dulles
IAD
Actual
Sep 25
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 6 min early
IAD → PHL
- <1 min early
STL → IAD
- 18 min early
IAD → PHL
- 15 min early
STL → IAD
- 75 min late
STL → IAD
Flight history and details
Aug 27, 2026 — Sep 26, 2026
- Observed arrivals
- 23
- Arrivals over 15 minutes late
- 9
- Observed cancellations
- 0
- Observed occurrences
- 23
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 25, 2026Arrived | Dulles | Philadelphia | -6 | |
| Sep 25, 2026Arrived | St Louis | Dulles | 0 | |
| Sep 24, 2026Arrived | Dulles | Philadelphia | -18 | |
| Sep 24, 2026Arrived | St Louis | Dulles | -15 | |
| Sep 23, 2026Arrived | St Louis | Dulles | 75 | |
| Sep 22, 2026Arrived | St Louis | Dulles | -16 | |
| Sep 21, 2026Arrived | St Louis | Dulles | 12 | |
| Sep 20, 2026Arrived | St Louis | Dulles | 172 | |
| Sep 19, 2026Arrived | St Louis | Dulles | 12 | |
| Sep 18, 2026Arrived | St Louis | Dulles | 7 | |
| 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 |