Flight Status & Tracker

UAL1023

UNITED AIRLINES INC · SMF → DEN · Last tracked Oct 21, 2026

UAL1023 is a flight number operated by UNITED AIRLINES INC between Sacramento International Airport (KSMF) and Denver International Airport (KDEN). SkyMeter last tracked UAL1023 on October 20, 2026. The flight is most often flown by a AIRBUS Airbus A321 Neo. Typical block time is 1h 50m. SkyMeter has observed 157 legs of this flight number via ADS-B.

SkyMeter tracks historical flight activity from ADS-B data — this is not a live gate-to-gate status feed.

✈
FLIGHTS
157
last 90 days
⏱
AVG DURATION
1h 50m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 10/21/2026
first → last seen
🗺
ROUTES / TYPES
10 / 6
city pairs · airframes
⚠
INCIDENT RATE
0.6%
1 flagged

Routes flown

By count · last 90 days

5
KSMF → KDEN
52
avg 2h 15m · Sacramento → Denver
KDEN → KORD
41
avg 2h 23m · Denver → Chicago O'Hare
40IS → KORD
2
avg 21m · Children's Memorial Hospital Heliport → Chicago O'Hare
IL70 → KORD
2
avg 14m · Wgn-Tv Heliport → Chicago O'Hare
LL95 → KORD
1
avg 22m · Clarke Heliport → Chicago O'Hare

Aircraft types

Equipment used on this number

6
A21N AIRBUS Airbus A321 Neo
72
A320 AIRBUS Airbus A320
52
B739 BOEING Boeing 737-900
36
B738 BOEING Boeing 737-800
5
B39M BOEING Boeing 737 MAX 9
4
ST75 ST75
1

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL1023

30
N37538BOEING Boeing 737 MAX 9
→
10/21/2026
24m
No alerts
Replay Analysis
N37538BOEING Boeing 737 MAX 9
→
10/20/2026
2h 3m
No alerts
Replay Analysis
N38443BOEING Boeing 737-900
→
10/19/2026
14m
No alerts
Replay Analysis
N38443BOEING Boeing 737-900
→
10/18/2026
2h 13m
No alerts
Replay Analysis
N69847BOEING Boeing 737-900
→
10/17/2026
2h 25m
No alerts
Replay Analysis
N66841BOEING Boeing 737-900
→
10/16/2026
2h 28m
No alerts
Replay Analysis
N65832BOEING Boeing 737-900
→
10/15/2026
2h 9m
No alerts
Replay Analysis
N39423BOEING Boeing 737-900
→
10/14/2026
11m
No alerts
Replay Analysis
N39423BOEING Boeing 737-900
→
10/13/2026
2h 6m
No alerts
Replay Analysis
N73445BOEING Boeing 737-900
→
10/11/2026
5m
No alerts
Replay Analysis
N73445BOEING Boeing 737-900
→
10/10/2026
2h 9m
No alerts
Replay Analysis
N37465BOEING Boeing 737-900
→
10/9/2026
2h 24m
No alerts
Replay Analysis
N36444BOEING Boeing 737-900
→
10/9/2026
10m
No alerts
Replay Analysis
N36444BOEING Boeing 737-900
→
10/8/2026
2h 13m
No alerts
Replay Analysis
N37427BOEING Boeing 737-900
→
10/8/2026
19m
No alerts
Replay Analysis
N37427BOEING Boeing 737-900
→
10/7/2026
2h 13m
No alerts
Replay Analysis
N69830BOEING Boeing 737-900
→
10/7/2026
8m
No alerts
Replay Analysis
N69830BOEING Boeing 737-900
→
10/6/2026
2h 8m
No alerts
Replay Analysis
N69830BOEING Boeing 737-900
→
10/6/2026
12m
No alerts
Replay Analysis
N17566BOEING Boeing 737 MAX 9
→
10/6/2026
6m
No alerts
Replay Analysis
N17566BOEING Boeing 737 MAX 9
→
10/5/2026
2h 13m
No alerts
Replay Analysis
N69838BOEING Boeing 737-900
→
10/5/2026
14m
No alerts
Replay Analysis
N69838BOEING Boeing 737-900
→
10/4/2026
1h 56m
No alerts
Replay Analysis
N68843BOEING Boeing 737-900
→
10/3/2026
2h 10m
No alerts
Replay Analysis
N62889BOEING Boeing 737-900
→
10/2/2026
2h 13m
No alerts
Replay Analysis
N75435BOEING Boeing 737-900
→
10/2/2026
42m
No alerts
Replay Analysis
N75435BOEING Boeing 737-900
→
10/2/2026
2h 18m
No alerts
Replay Analysis
N75435BOEING Boeing 737-900
→
10/2/2026
1h 34m
No alerts
Replay Analysis
N69818BOEING Boeing 737-900
→
9/30/2026
2h 26m
No alerts
Replay Analysis
N37471BOEING Boeing 737-900
→
9/30/2026
10m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window