Is UA4558 delayed?
Service date: · Scheduled departure date (America/New_York)
Arrived
11 min early
Official source · Updated
Departure
Dulles
IAD
Actual
Scheduled 18:03
Sep 16
Arrival
Buffalo
BUF
Actual
Scheduled 22:55
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
IADBUF
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 8 min early
IAD → BUF
- 3 min late
IAD → BUF
- 9 min late
IAD → BUF
- 208 min late
IAD → BUF
- 11 min early
IAD → BUF
Flight history and details
Aug 25, 2026 — Sep 24, 2026
- Observed arrivals
- 15
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 1
- Observed occurrences
- 18
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 22, 2026Arrived | Dulles | Buffalo | -8 | |
| Sep 21, 2026Arrived | Dulles | Buffalo | 3 | |
| Sep 20, 2026Arrived | Dulles | Buffalo | 9 | |
| Sep 18, 2026Cancelled | Dulles | Buffalo | Not available | Not available |
| Sep 17, 2026Arrived | Dulles | Buffalo | 208 | |
| Sep 16, 2026Arrived | Dulles | Buffalo | -11 | |
| Sep 15, 2026Arrived | Dulles | Buffalo | 3 | |
| Sep 14, 2026Arrived | Dulles | Buffalo | -7 | |
| Sep 13, 2026Arrived | Dulles | Buffalo | -12 | |
| Sep 11, 2026Arrived | Dulles | Buffalo | -5 | |
| Sep 9, 2026Arrived | Dulles | Buffalo | -6 | |
| Sep 8, 2026Arrived | Dulles | Buffalo | -11 | |
| Sep 7, 2026Arrived | Huntsville | Houston | -35 | |
| Sep 6, 2026Arrived | Huntsville | Houston | -29 | |
| Sep 5, 2026Arrived | Huntsville | Houston | -29 | |
| Sep 4, 2026Arrived | Huntsville | Houston | -10 |