Apparatus

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flight_takeoff Flight

UAL645C

Operated by United Airlines

Live map

Live map filtered to UAL645C. Shown when the flight is currently airborne.

Route airports View route page →

Departure

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
19:26 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
290° / 7 kt
Visibility
10 SM
Ceiling
FEW 7,000 ft, SCT 11,000 ft, BKN 20,000 ft
Temp / Dew
23°C / 6°C
Altimeter
29.79 inHg

Obs: 2026-05-30T00:53:00.000Z

Raw METAR / TAF 
METAR KDEN 300053Z 29007KT 10SM FEW070 SCT110 BKN200 23/06 A2979 RMK AO2 SLP018 T02280056

TAF KDEN 300002Z 3000/3106 32010KT P6SM VCSH SCT070 BKN110 BKN150 FM300200 03010KT P6SM SCT100 BKN150 FM300600 32007KT P6SM FEW100 SCT200 FM300900 25006KT P6SM FEW100 SCT200 FM301400 28009KT P6SM SCT180 FM302100 31012KT P6SM VCSH SCT100 PROB30 3021/3101 VRB15G25KT FM310300 27013KT P6SM FEW080 SCT100

flight Live Traffic

flight_takeoff 473 Departures
flight_land 451 Arrivals

Arrival

FSD KFSD VFR

Sioux Falls Regional Airport

Sioux Falls, US

Local time
20:26 CDT
Timezone
America/Chicago
Type
Medium Airport
Elevation
1,429 ft
Coordinates
43.5855, -96.7412

cloud Weather

Wind
110° / 6 kt
Visibility
8 SM
Ceiling
SCT 8,500 ft, OVC 10,000 ft
Temp / Dew
21°C / 18°C
Altimeter
29.89 inHg
Wx
-RA

Obs: 2026-05-30T00:56:00.000Z

Raw METAR / TAF 
METAR KFSD 300056Z 11006KT 8SM -RA SCT085 OVC100 21/18 A2989 RMK AO2 SLP115 P0003 T02060183

TAF KFSD 292339Z 3000/3024 11010KT P6SM -SHRA BKN080 FM300200 13009KT P6SM SCT040 OVC070 FM301200 12012G20KT P6SM BKN025 PROB30 3017/3019 -SHRA OVC025 FM301900 12017G26KT P6SM BKN045 PROB30 3021/3024 -SHRA BKN035

flight Live Traffic

flight_takeoff 14 Departures
flight_land 16 Arrivals

Recent history last 1

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-25 A9D626 DEN → FSD May 25, 17:05 UTCMay 25, 20:30 UTC3h 24m - -

Performance history

Flights tracked
1
Avg arrival delay
-
On-time arrival
-
Aircraft used
1

Monthly activity 1 month

Month Flights tracked
May 2026 1

UAL645C frequently asked

Where does flight UAL645C fly?
UAL645C (United Airlines) flies from DEN to FSD. View the full route page.
How long is flight UAL645C?
Based on observed flights, UAL645C takes on average 3h 24m from takeoff to landing.
How often does UAL645C fly?
UAL645C has been observed flying rarely in our tracking data. We've recorded 1 flight under this callsign.
Can I track UAL645C live?
Yes. When UAL645C is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.