Is UA1256 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Denver)
16 min late
Official source · Updated
Departure
Denver
DEN
Scheduled
Sep 8
Arrival
San Jose
SJC
Actual
Sep 8
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Service date: · Scheduled departure date (UTC)
1 min early
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Knoxville
TYS
Actual
Sep 8
Arrival
Denver
DEN
Scheduled
Sep 8
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 8 min early
DEN → SJC
- 31 min early
TYS → DEN
- 14 min early
DEN → SJC
- 24 min early
TYS → DEN
- 4 min late
DEN → SJC
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 32
- Arrivals over 15 minutes late
- 5
- Observed cancellations
- 0
- Observed occurrences
- 36
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 18, 2026Arrived | Denver | San Jose | -8 | |
| Sep 18, 2026Arrived | Knoxville | Denver | -31 | |
| Sep 17, 2026Arrived | Denver | San Jose | -14 | |
| Sep 17, 2026Arrived | Knoxville | Denver | -24 | |
| Sep 16, 2026Arrived | Denver | San Jose | 4 | |
| Sep 15, 2026Arrived | Denver | San Jose | 4 | |
| Sep 15, 2026Arrived | Knoxville | Denver | -7 | |
| Sep 14, 2026Arrived | Knoxville | Denver | 56 | |
| Sep 12, 2026Arrived | Denver | San Jose | -15 | |
| Sep 12, 2026Arrived | Knoxville | Denver | -20 | |
| Sep 11, 2026Arrived | Knoxville | Denver | -28 | |
| Sep 10, 2026Arrived | Knoxville | Denver | 15 | |
| Sep 9, 2026Arrived | Denver | San Jose | -7 | |
| Sep 9, 2026Arrived | Knoxville | Denver | -30 | |
| Sep 8, 2026Arrived | Denver | San Jose | 16 | |
| Sep 7, 2026Arrived | Denver | San Jose | -11 | |
| Sep 7, 2026Arrived | Knoxville | Denver | -15 | |
| Sep 6, 2026Arrived | Denver | San Jose | 22 | |
| Sep 6, 2026Arrived | Knoxville | Denver | -26 | |
| Sep 5, 2026Arrived | Denver | San Jose | -8 | |
| Sep 5, 2026Arrived | Knoxville | Denver | -29 | |
| Sep 4, 2026Arrived | Denver | San Jose | -10 | |
| Sep 4, 2026Arrived | Knoxville | Denver | 30 | |
| Aug 28, 2026Arrived | Denver | San Jose | -10 | |
| Aug 27, 2026Arrived | Denver | San Jose | 1 | |
| Aug 26, 2026Arrived | Denver | San Jose | 1 | |
| Aug 25, 2026Arrived | Denver | San Jose | -9 | |
| Aug 24, 2026Arrived | Denver | San Jose | -5 | |
| Aug 23, 2026Arrived | Denver | San Jose | -16 | |
| Aug 22, 2026Arrived | Denver | San Jose | -5 | |
| Aug 21, 2026Arrived | Denver | San Jose | -6 | |
| Aug 20, 2026Arrived | Denver | San Jose | -9 |