United Airlines
Is UA645 delayed?
No delay reported yet. UA645 is scheduled to leave Denver at 17:42 on Nov 14 and reach Sioux Falls at 19:59 (as of Nov 14, 16:06 UTC).
Usually on time: arrived within 15 min of schedule on 25 of the last 29 flights.
No live update yet
Showing the published schedule until live times come in.
Update time unavailable
Departure
Denver
DEN
Scheduled
Nov 14
Arrival
Sioux Falls
FSD
Scheduled
Nov 14
Times shown in airport local time
Service date: · Scheduled departure date (America/Denver)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
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.
- 395 min late
Denver → Sioux Falls
- 11 min early
Denver → Sioux Falls
- 16 min late
Denver → Sioux Falls
- 21 min early
Denver → Sioux Falls
- On schedule (1 min behind)
Denver → Sioux Falls
Is UA645 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
Denver (DEN) departures
- Left more than 15 min late
- 29 of 68
- Cancelled today
- 52
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Nov 13, 2026Arrived | Denver | Sioux Falls | 395 | |
| Nov 12, 2026Arrived | Denver | Sioux Falls | -11 | |
| Nov 11, 2026Arrived | Denver | Sioux Falls | 16 | |
| Nov 10, 2026Arrived | Denver | Sioux Falls | -21 | |
| Nov 9, 2026Arrived | Denver | Sioux Falls | 1 | |
| Nov 8, 2026Arrived | Denver | Sioux Falls | 4 | |
| Nov 7, 2026Arrived | Denver | Sioux Falls | -3 | |
| Nov 6, 2026Arrived | Denver | Sioux Falls | -14 | |
| Nov 5, 2026Arrived | Denver | Sioux Falls | -14 | |
| Nov 4, 2026Arrived | Denver | Sioux Falls | -14 | |
| Nov 3, 2026Arrived | Denver | Sioux Falls | -11 | |
| Nov 2, 2026Arrived | Denver | Sioux Falls | -10 | |
| Nov 1, 2026Arrived | Denver | Sioux Falls | -18 | |
| Oct 31, 2026Arrived | Denver | Sioux Falls | -19 | |
| Oct 30, 2026Arrived | Denver | Sioux Falls | -3 | |
| Oct 29, 2026Arrived | Denver | Sioux Falls | -13 | |
| Oct 27, 2026Arrived | Denver | Sioux Falls | -16 | |
| Oct 26, 2026Arrived | Denver | Sioux Falls | -20 | |
| Oct 25, 2026Arrived | Denver | Sioux Falls | -8 | |
| Oct 24, 2026Arrived | Denver | Sioux Falls | -17 | |
| Oct 23, 2026Arrived | Denver | Sioux Falls | -12 | |
| Oct 22, 2026Arrived | Denver | Sioux Falls | 72 | |
| Oct 21, 2026Arrived | Denver | Sioux Falls | -11 | |
| Oct 20, 2026Arrived | Denver | Sioux Falls | -8 | |
| Oct 19, 2026Arrived | Denver | Sioux Falls | -14 | |
| Oct 18, 2026Arrived | Denver | Sioux Falls | 0 | |
| Oct 17, 2026Arrived | Denver | Sioux Falls | 2 | |
| Oct 16, 2026Arrived | Denver | Sioux Falls | -14 | |
| Oct 15, 2026Arrived | Denver | Sioux Falls | 62 |