United Airlines
Is UA4421 delayed?
Service date: · Scheduled departure date (America/New_York)
Arrived
<1 min early
Official source · Updated
Departure
Dulles
IAD
Actual
Scheduled 22:48
Sep 14
Arrival
Roanoke
ROA
Actual
Scheduled 03:35
Sep 15
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
IADROA
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- <1 min early
IAD → ROA
- 6 min late
IAD → ROA
- 1 min early
IAD → ROA
- 4 min early
IAD → ROA
- 9 min early
IAD → ROA
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 9
- Arrivals over 15 minutes late
- 1
- 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 14, 2026Arrived | Dulles | Roanoke | 0 | |
| Sep 13, 2026Arrived | Dulles | Roanoke | 6 | |
| Sep 12, 2026Arrived | Dulles | Roanoke | -1 | |
| Sep 11, 2026Arrived | Dulles | Roanoke | -4 | |
| Sep 8, 2026Arrived | Dulles | Roanoke | -9 | |
| Sep 7, 2026Arrived | Chicago | Columbia | -29 | |
| Sep 6, 2026Arrived | Chicago | Columbia | -28 | |
| Sep 5, 2026Arrived | Chicago | Columbia | -38 | |
| Sep 4, 2026Arrived | Chicago | Columbia | 56 |