Is UA4304 delayed?
Service date: · Scheduled departure date (America/New_York)
Arrived
20 min early
Updated
Departure
Dulles
IAD
Actual
Scheduled 22:15
Aug 23
Arrival
Knoxville
TYS
Actual
Scheduled 03:59
Aug 24
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
IADTYS
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 23 min early
IAD → TYS
- 6 min early
IAD → TYS
- 19 min early
IAD → TYS
- 32 min early
IAD → TYS
- 15 min early
IAD → TYS
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 12
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 0
- Observed occurrences
- 24
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 16, 2026Arrived | Dulles | Knoxville | -23 | |
| Sep 15, 2026Arrived | Dulles | Knoxville | -6 | |
| Sep 14, 2026Arrived | Dulles | Knoxville | -19 | |
| Sep 11, 2026Arrived | Dulles | Knoxville | -32 | |
| Sep 10, 2026Arrived | Dulles | Knoxville | -15 | |
| Sep 9, 2026Arrived | Dulles | Knoxville | -32 | |
| Sep 8, 2026Arrived | Dulles | Knoxville | -36 | |
| Sep 7, 2026Arrived | Dulles | Knoxville | -30 | |
| Sep 6, 2026Arrived | Dulles | Knoxville | -15 | |
| Sep 5, 2026Arrived | Dulles | Knoxville | -8 | |
| Sep 4, 2026Arrived | Dulles | Knoxville | 35 | |
| Aug 23, 2026Arrived | Dulles | Knoxville | -20 |