United Airlines
Is UA4255 delayed?
No, UA4255 landed in Dulles 20 min early, at 11:28 on Nov 11 (as of Nov 11, 16:28 UTC).
Usually on time: arrived within 15 min of schedule on 14 of the last 16 flights.
20 min early
Official source · Updated
Departure
Buffalo
BUF
Actual
Scheduled 10:35
Nov 11
Arrival
Dulles
IAD
Actual
Scheduled 11:48
Nov 11
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 20 min early
Buffalo → Dulles
- 14 min early
Buffalo → Dulles
- 18 min early
Buffalo → Dulles
- 18 min early
Buffalo → Dulles
- 25 min early
Buffalo → Dulles
Is UA4255 usually late?
Period: Oct 15, 2026 – Nov 14, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Compares scheduled and actual arrival times. Cancelled and diverted flights are left out. Some flights may be missing.
At the airports today
Dulles (IAD) departures
- Left more than 15 min late
- 17 of 46
- Cancelled today
- 28
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 11, 2026Arrived | Buffalo | Dulles | -20 | |
| Nov 10, 2026Arrived | Buffalo | Dulles | -14 | |
| Nov 8, 2026Arrived | Buffalo | Dulles | -18 | |
| Nov 4, 2026Arrived | Buffalo | Dulles | -18 | |
| Nov 3, 2026Arrived | Buffalo | Dulles | -25 | |
| Nov 1, 2026Arrived | Buffalo | Dulles | -10 | |
| Oct 27, 2026Arrived | Buffalo | Dulles | -11 | |
| Oct 25, 2026Arrived | Buffalo | Dulles | -25 | |
| Oct 24, 2026Arrived | Dulles | Richmond | -22 | |
| Oct 23, 2026Arrived | Dulles | Richmond | -5 | |
| Oct 21, 2026Arrived | Dulles | Richmond | 49 | |
| Oct 20, 2026Arrived | Dulles | Richmond | -11 | |
| Oct 19, 2026Arrived | Dulles | Richmond | -15 | |
| Oct 18, 2026Arrived | Dulles | Richmond | -9 | |
| Oct 17, 2026Arrived | Dulles | Richmond | -7 | |
| Oct 16, 2026Arrived | Dulles | Richmond | 62 |