UAL2123

Flight

Status

Completed

Arrival confirmed via

ADS-B (ground reading)

Departure

Kansas City International Airport (MCI) — Kansas City, United States

Departed

2026-09-17 22:53 UTC

Arrival

Denver International Airport (DEN) — Denver, United States

Distance flown

1005 km

Straight-line distance

855 km

Approach distance

38 km

Aircraft

Registration

N57286

Type

Boeing 737 MAX 8

Seats

166 total (96 Economy, 54 Economy Plus, 16 First) (typical for type, not this tail)

Altitude & speed

Max altitude

36,000 ft

Max ground speed

486 kt

Tracked

1h 24m · 955 km

Altitude (ft, max 36,000)

Ground speed (kt, max 486)

Altitude (ft, max 36,000)

Ground speed (kt, max 486)

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
2026-10-03 03:36 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14566	Airbus A321 Neo	Completed	1576 km
2026-10-02 04:32 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14523	Airbus A321 Neo	Completed	1575 km
2026-10-01 04:10 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14511	Airbus A321 Neo	Completed	1576 km
2026-09-30 03:10 UTC	UAL2123	DEN → SFO Denver → San Francisco	N54543	Airbus A321 Neo	Completed	1580 km
2026-09-29 03:56 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14504	Airbus A321 Neo	Completed	1576 km
2026-09-28 03:55 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14520	Airbus A321 Neo	Completed	1583 km
2026-09-27 02:59 UTC	UAL2123	DEN → SFO Denver → San Francisco	N24573	Airbus A321 Neo	Completed	1578 km
2026-09-26 04:24 UTC	UAL2123	DEN → SFO Denver → San Francisco	N24555	Airbus A321 Neo	Completed	1576 km
2026-09-25 03:11 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14545	Airbus A321 Neo	Completed	1581 km
2026-09-24 03:17 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14541	Airbus A321 Neo	Completed	1582 km
2026-09-23 22:37 UTC	UAL2123	MCI → DEN Kansas City → Denver	N12238	Boeing 737-800	Completed	1015 km
2026-09-23 03:33 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14554	Airbus A321 Neo	Completed	1582 km
2026-09-22 22:22 UTC	UAL2123	MCI → DEN Kansas City → Denver	N17229	Boeing 737-800	Completed	1020 km
2026-09-22 03:14 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14528	Airbus A321 Neo	Completed	1593 km
2026-09-21 22:43 UTC	UAL2123	MCI → DEN Kansas City → Denver	N47345	Boeing 737 MAX 8	Completed	1006 km
2026-09-21 04:27 UTC	UAL2123	DEN → SFO Denver → San Francisco	N54552	Airbus A321 Neo	Completed	1574 km
2026-09-20 22:32 UTC	UAL2123	MCI → DEN Kansas City → Denver	N47291	Boeing 737 MAX 8	Completed	1002 km
2026-09-20 03:31 UTC	UAL2123	DEN → SFO Denver → San Francisco	N54538	Airbus A321 Neo	Completed	1612 km
2026-09-19 22:53 UTC	UAL2123	MCI → DEN Kansas City → Denver	N12238	Boeing 737-800	Completed	1041 km
2026-09-19 03:30 UTC	UAL2123	DEN → SFO Denver → San Francisco	N27283	Boeing 737 MAX 8	Completed	1627 km
2026-09-19 00:47 UTC	UAL2123	MCI → DEN Kansas City → Denver	N76529	Boeing 737-800	Completed	1007 km
2026-09-18 03:44 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14534	Airbus A321 Neo	Completed	1644 km
2026-09-17 22:53 UTC	UAL2123	MCI → DEN Kansas City → Denver	N57286	Boeing 737 MAX 8	Completed	1005 km
2026-09-17 04:16 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14564	Airbus A321 Neo	Completed	1672 km
2026-09-16 22:31 UTC	UAL2123	MCI → DEN Kansas City → Denver	N77525	Boeing 737-800	Completed	1177 km
2026-09-16 03:03 UTC	UAL2123	DEN → SFO Denver → San Francisco	N24514	Airbus A321 Neo	Completed	1723 km
2026-09-15 22:21 UTC	UAL2123	MCI → DEN Kansas City → Denver	N17244	Boeing 737-800	Completed	964 km
2026-09-15 03:13 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14557	Airbus A321 Neo	Completed	1639 km
2026-09-14 22:21 UTC	UAL2123	MCI → DEN Kansas City → Denver	N27251	Boeing 737 MAX 8	Completed	1169 km
2026-09-14 03:15 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14529	Airbus A321 Neo	Completed	1655 km
2026-09-13 22:24 UTC	UAL2123	MCI → DEN Kansas City → Denver	N12225	Boeing 737-800	Completed	1010 km
2026-09-13 02:57 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14503	Airbus A321 Neo	Completed	1649 km
2026-09-12 22:36 UTC	UAL2123	MCI → DEN Kansas City → Denver	N27334	Boeing 737 MAX 8	Completed	1143 km
2026-09-12 03:19 UTC	UAL2123	DEN → SFO Denver → San Francisco	N27261	Boeing 737 MAX 8	Completed	1704 km
2026-09-11 22:41 UTC	UAL2123	MCI → DEN Kansas City → Denver	N854UA	Airbus A319	Completed	1031 km
2026-09-11 03:06 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14569	Airbus A321 Neo	Completed	1669 km
2026-09-10 22:28 UTC	UAL2123	MCI → DEN Kansas City → Denver	N37252	Boeing 737-800	Completed	1040 km
2026-09-10 03:00 UTC	UAL2123	DEN → SFO Denver → San Francisco	N34551	Airbus A321 Neo	Completed	1632 km
2026-09-09 22:17 UTC	UAL2123	MCI → DEN Kansas City → Denver	N76528	Boeing 737-800	Completed	1021 km
2026-09-08 03:08 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14544	Airbus A321 Neo	Completed	1657 km
2026-09-07 22:30 UTC	UAL2123	MCI → DEN Kansas City → Denver	N38268	Boeing 737-800	Completed	1675 km
2026-09-07 03:19 UTC	UAL2123	DEN → SFO Denver → San Francisco	N24513	Airbus A321 Neo	Completed	1650 km
2026-09-06 22:26 UTC	UAL2123	MCI → DEN Kansas City → Denver	N77525	Boeing 737-800	Completed	976 km
2026-09-06 03:22 UTC	UAL2123	DEN → SFO Denver → San Francisco	N47293	Boeing 737 MAX 8	Completed	1639 km
2026-09-05 22:46 UTC	UAL2123	MCI → DEN Kansas City → Denver	N38459	Boeing 737-900	Completed	961 km
2026-09-05 03:07 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14564	Airbus A321 Neo	Completed	1643 km
2026-09-04 22:55 UTC	UAL2123	MCI → DEN Kansas City → Denver	N76516	Boeing 737-800	Completed	934 km
2026-09-04 04:13 UTC	UAL2123	DEN → SFO Denver → San Francisco	N14511	Airbus A321 Neo	Completed	1642 km
2026-09-03 22:45 UTC	UAL2123	MCI → DEN Kansas City → Denver	N77261	Boeing 737-800	Completed	1004 km
2026-09-03 02:11 UTC	UAL2123	DEN → SFO Denver → San Francisco	N24573	Airbus A321 Neo	Completed	1645 km