UA645

DEN → FSD · Boeing 737 MAX 9 · United Airlines

For travellers

Departure · Denver (DEN)

Gate B49

Scheduled 02 Oct 17:40 · Departed 02 Oct 17:37

Board status: Off block

Airborne since 02 Oct 17:45 (ADS-B)

Board data from den, updated 164 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

Denver International Airport (DEN) — Denver, United States

Scheduled departure

2026-10-02 23:40 UTC

Departed

2026-10-02 23:45 UTC

Arrival

Joe Foss Field Airport (FSD) — Sioux Falls, United States

Distance flown

832 km

Straight-line distance

777 km

Approach distance

67 km

Aircraft

Registration

N37555

Type

Boeing 737 MAX 9

Seats

179 total (117 Economy, 42 Economy Plus, 20 First)

CO2 (EMEP est., total)

17.4 t (123 kg/pax Business, 94 kg/pax Economy)

Altitude & speed

Max altitude

35,000 ft

Max ground speed

519 kt

Tracked

1h 27m · 830 km

Altitude (ft, max 35,000)

Ground speed (kt, max 519)

Altitude (ft, max 35,000)

Ground speed (kt, max 519)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

United Airlines (UAL)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-02 23:45 UTC	UAL645	DEN → FSD Denver → Sioux Falls	N37555	Boeing 737 MAX 9	Completed	832 km
2026-10-02 00:03 UTC	UAL645	DEN → FSD Denver → Sioux Falls	N38454	Boeing 737-900	Completed	807 km
2026-09-30 23:38 UTC	UAL645	DEN → FSD Denver → Sioux Falls	N68807	Boeing 737-900	Completed	860 km
2026-09-29 23:42 UTC	UAL645	DEN → FSD Denver → Sioux Falls	N37413	Boeing 737-900	Completed	829 km

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