Is UA4527 delayed?
Service date: · Scheduled departure date (America/New_York)
Arrived
58 min late
Official source · Updated
Departure
Dulles
IAD
Actual
Scheduled 18:08
Sep 21
Arrival
St Louis
STL
Actual
Scheduled 00:05
Sep 22
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
IADSTL
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 2 min early
ORD → CMH
- 2 min early
IAD → STL
- 58 min late
IAD → STL
- 33 min early
IAD → STL
- 11 min late
IAD → STL
Flight history and details
Aug 25, 2026 — Sep 24, 2026
- Observed arrivals
- 23
- Arrivals over 15 minutes late
- 4
- Observed cancellations
- 0
- Observed occurrences
- 30
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 23, 2026Arrived | Chicago | Columbus | -2 | |
| Sep 22, 2026Arrived | Dulles | St Louis | -2 | |
| Sep 21, 2026Arrived | Dulles | St Louis | 58 | |
| Sep 20, 2026Arrived | Dulles | St Louis | -33 | |
| Sep 19, 2026Arrived | Dulles | St Louis | 11 | |
| Sep 18, 2026Arrived | Dulles | St Louis | -28 | |
| Sep 17, 2026Arrived | Dulles | St Louis | 311 | |
| Sep 16, 2026Arrived | Dulles | St Louis | -15 | |
| Sep 15, 2026Arrived | Dulles | St Louis | -25 | |
| Sep 14, 2026Arrived | Dulles | St Louis | -26 | |
| Sep 13, 2026Arrived | Dulles | St Louis | -28 | |
| Sep 12, 2026Arrived | Dulles | St Louis | 106 | |
| Sep 11, 2026Arrived | Dulles | St Louis | -27 | |
| Sep 10, 2026Arrived | Dulles | St Louis | -11 | |
| Sep 9, 2026Arrived | Dulles | St Louis | -28 | |
| Sep 8, 2026Arrived | Dulles | St Louis | -41 | |
| Sep 7, 2026Arrived | Dulles | St Louis | -29 | |
| Sep 6, 2026Arrived | Dulles | St Louis | -30 | |
| Sep 5, 2026Arrived | Dulles | St Louis | 4 | |
| Sep 3, 2026Arrived | Dulles | St Louis | -29 | |
| Sep 1, 2026Arrived | Dulles | St Louis | -37 | |
| Aug 27, 2026Arrived | Dulles | St Louis | 164 | |
| Aug 26, 2026Arrived | Dulles | St Louis | -18 |