UAL1121

UNITED AIRLINES INC · ONT → ORD

UAL1121 is operated by UNITED AIRLINES INC between Ontario International Airport (KONT) and Chicago O'Hare International Airport (KORD). The flight is most often flown by a BOEING Boeing 737-800. Typical block time is 3h 32m. SkyMeter has observed 28 legs of this flight number via ADS-B.

✈
FLIGHTS
28
last 90 days
⏱
AVG DURATION
3h 32m
tracked time
📅
SERVICE PERIOD
05/31/2025 → 08/22/2026
first → last seen
🗺
ROUTES / TYPES
6 / 5
city pairs · airframes
⚠
INCIDENT RATE
3.6%
1 flagged

Routes flown

By count · last 90 days

2
KONT → KORD
8
avg 3h 48m · Ontario → Chicago O'Hare
KORD → KMSP
4
avg 1h 12m · Chicago O'Hare → Minneapolis-St Paul International/Wold-Chamberlain

Aircraft types

Equipment used on this number

5
B738 BOEING Boeing 737-800
9
A319 AIRBUS Airbus A319
8
B39M BOEING Boeing 737 MAX 9
8
B739 BOEING Boeing 737-900
6
B38M BOEING Boeing 737 MAX 8
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
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 UAL1121

30
N879UAAIRBUS Airbus A319
→
08/22/2026
6m
No alerts
Replay Analysis
N879UAAIRBUS Airbus A319
→
08/22/2026
1h 3m
No alerts
Replay Analysis
N77536BOEING Boeing 737-800
→
08/22/2026
3h 43m
No alerts
Replay Analysis
N47288BOEING Boeing 737 MAX 8
→
08/21/2026
3h 53m
△ Low approach-stability score
Replay Analysis
N801UAAIRBUS Airbus A319
→
08/18/2026
1h 9m
No alerts
Replay Analysis
N37252BOEING Boeing 737-800
→
08/18/2026
3h 46m
No alerts
Replay Analysis
N896UAAIRBUS Airbus A319
→
08/17/2026
1h 17m
No alerts
Replay Analysis
N12218BOEING Boeing 737-800
→
08/17/2026
3h 39m
No alerts
Replay Analysis
N820UAAIRBUS Airbus A319
→
08/17/2026
12m
No alerts
Replay Analysis
N820UAAIRBUS Airbus A319
→
08/16/2026
1h 3m
No alerts
Replay Analysis
N76508BOEING Boeing 737-800
→
08/16/2026
3h 43m
No alerts
Replay Analysis
N801UAAIRBUS Airbus A319
→
08/15/2026
1h 2m
No alerts
Replay Analysis
N77520BOEING Boeing 737-800
→
08/15/2026
3h 55m
No alerts
Replay Analysis
N842UAAIRBUS Airbus A319
→
08/14/2026
1h 27m
No alerts
Replay Analysis
N18223BOEING Boeing 737-800
→
08/14/2026
3h 37m
No alerts
Replay Analysis
N87507BOEING Boeing 737-800
→
08/13/2026
3h 40m
No alerts
Replay Analysis
N73256BOEING Boeing 737-800
→
08/12/2026
3h 41m
No alerts
Replay Analysis
N76515BOEING Boeing 737-800
→
08/11/2026
4h 4m
No alerts
Replay Analysis
N68842BOEING Boeing 737-900
→
08/09/2026
24m
No alerts
Replay Analysis
N68842BOEING Boeing 737-900
→
08/08/2026
2h 15m
No alerts
Replay Analysis
N37553BOEING Boeing 737 MAX 9
→
07/25/2026
10h 40m
No alerts
Replay Analysis
N39416BOEING Boeing 737-900
→
07/12/2026
36m
No alerts
Replay Analysis
N39416BOEING Boeing 737-900
→
07/11/2026
2h 56m
No alerts
Replay Analysis
N39416BOEING Boeing 737-900
→
07/11/2026
2h 19m
No alerts
Replay Analysis
N69819BOEING Boeing 737-900
→
06/27/2026
11h 2m
No alerts
Replay Analysis
N77592BOEING Boeing 737 MAX 9
→
06/20/2026
2h 25m
No alerts
Replay Analysis
N17417BOEING Boeing 737 MAX 9
→
06/14/2026
7m
No alerts
Replay Analysis
N17417BOEING Boeing 737 MAX 9
→
06/13/2026
10h 56m
No alerts
Replay Analysis
N37504BOEING Boeing 737 MAX 9
→
06/07/2026
25m
No alerts
Replay Analysis
N37504BOEING Boeing 737 MAX 9
→
06/06/2026
1h 58m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window