United Airlines
Is UAL4070 delayed?
Service date: · Scheduled departure date (America/New_York)
Arrived
272 min late
Official source · Updated
Departure
Dulles
IAD
Actual
Scheduled 13:10
Sep 21
Arrival
Knoxville
TYS
Actual
Scheduled 18:28
Sep 21
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
IADTYS
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 17 min early
IAD → TYS
- 272 min late
IAD → TYS
- 18 min early
IAD → TYS
- 12 min early
IAD → TYS
- On time
IAD → TYS
Flight history and details
Aug 23, 2026 — Sep 22, 2026
- Observed arrivals
- 17
- Arrivals over 15 minutes late
- 2
- Observed cancellations
- 0
- 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 | Knoxville | -17 | |
| Sep 21, 2026Arrived | Dulles | Knoxville | 272 | |
| Sep 20, 2026Arrived | Dulles | Knoxville | -18 | |
| Sep 19, 2026Arrived | Dulles | Knoxville | -12 | |
| Sep 18, 2026Arrived | Dulles | Knoxville | 0 | |
| Sep 17, 2026Arrived | Dulles | Knoxville | -33 | |
| Sep 16, 2026Arrived | Dulles | Knoxville | -29 | |
| Sep 14, 2026Arrived | Dulles | Knoxville | -18 | |
| Sep 12, 2026Arrived | Dulles | Knoxville | -34 | |
| Sep 11, 2026Arrived | Dulles | Knoxville | -4 | |
| Sep 10, 2026Arrived | Dulles | Knoxville | -18 | |
| Sep 9, 2026Arrived | Dulles | Knoxville | -34 | |
| Sep 8, 2026Arrived | Dulles | Knoxville | -12 | |
| Sep 7, 2026Arrived | Dulles | Knoxville | -20 | |
| Sep 6, 2026Arrived | Dulles | Knoxville | -16 | |
| Sep 5, 2026Arrived | Dulles | Knoxville | -17 | |
| Sep 4, 2026Arrived | Dulles | Knoxville | 304 |