UAL660 is operated by UNITED AIRLINES INC between Chicago O'Hare International Airport (KORD) and San Diego International Airport (KSAN). The flight is most often flown by a AIRBUS Airbus A321 Neo. Typical block time is 2h 46m. SkyMeter has observed 66 legs of this flight number via ADS-B.

✈
FLIGHTS
66
last 90 days
⏱
AVG DURATION
2h 46m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
6 / 5
city pairs · airframes
⚠
INCIDENT RATE
1.5%
1 flagged

Routes flown

By count · last 90 days

3
KORD → KSAN
29
avg 4h 1m · Chicago O'Hare → San Diego
KPHL → KORD
25
avg 1h 59m · Philadelphia → Chicago O'Hare
04PA → KORD
4
avg 1h 59m · S & C Distribution Center Heliport → Chicago O'Hare

Aircraft types

Equipment used on this number

5
A21N AIRBUS Airbus A321 Neo
33
B38M BOEING Boeing 737 MAX 8
23
B738 BOEING Boeing 737-800
5
B739 BOEING Boeing 737-900
3
A319 AIRBUS Airbus A319
2

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 UAL660

30
N14517AIRBUS Airbus A321 Neo
→
06/03/2026
4h 4m
No alerts
Replay Analysis
N37319BOEING Boeing 737 MAX 8
→
06/03/2026
1h 45m
No alerts
Replay Analysis
N24513AIRBUS Airbus A321 Neo
→
06/02/2026
4h 19m
No alerts
Replay Analysis
N17361BOEING Boeing 737 MAX 8
→
06/02/2026
1h 52m
No alerts
Replay Analysis
N54543AIRBUS Airbus A321 Neo
→
06/01/2026
4h 28m
No alerts
Replay Analysis
N54543AIRBUS Airbus A321 Neo
→
06/01/2026
44m
No alerts
Replay Analysis
N37305BOEING Boeing 737 MAX 8
→
06/01/2026
10m
No alerts
Replay Analysis
N37305BOEING Boeing 737 MAX 8
→
06/01/2026
2h 7m
No alerts
Replay Analysis
N14563AIRBUS Airbus A321 Neo
→
05/31/2026
3h 56m
No alerts
Replay Analysis
N78524BOEING Boeing 737-800
→
05/31/2026
2h 6m
No alerts
Replay Analysis
N34535AIRBUS Airbus A321 Neo
→
05/29/2026
3h 47m
No alerts
Replay Analysis
N37297BOEING Boeing 737 MAX 8
→
05/29/2026
5m
No alerts
Replay Analysis
N37297BOEING Boeing 737 MAX 8
→
05/29/2026
2h 0m
No alerts
Replay Analysis
N54558AIRBUS Airbus A321 Neo
→
05/28/2026
3h 42m
No alerts
Replay Analysis
N17265BOEING Boeing 737 MAX 8
→
05/28/2026
2h 14m
No alerts
Replay Analysis
N14540AIRBUS Airbus A321 Neo
→
05/26/2026
3h 41m
No alerts
Replay Analysis
N27256BOEING Boeing 737 MAX 8
→
05/26/2026
2h 6m
No alerts
Replay Analysis
N54552AIRBUS Airbus A321 Neo
→
05/25/2026
4h 14m
No alerts
Replay Analysis
N37342BOEING Boeing 737 MAX 8
→
05/25/2026
2h 0m
No alerts
Replay Analysis
N14557AIRBUS Airbus A321 Neo
→
05/24/2026
4h 17m
No alerts
Replay Analysis
N11206BOEING Boeing 737-800
→
05/24/2026
2h 0m
↻ Go-around
Replay Analysis
N24542AIRBUS Airbus A321 Neo
→
05/23/2026
4h 38m
No alerts
Replay Analysis
N47332BOEING Boeing 737 MAX 8
→
05/23/2026
2h 5m
No alerts
Replay Analysis
N14553AIRBUS Airbus A321 Neo
→
05/21/2026
3h 55m
No alerts
Replay Analysis
N894UAAIRBUS Airbus A319
→
05/21/2026
2h 4m
No alerts
Replay Analysis
N14527AIRBUS Airbus A321 Neo
→
05/20/2026
4h 5m
No alerts
Replay Analysis
N27252BOEING Boeing 737 MAX 8
→
05/20/2026
1h 57m
No alerts
Replay Analysis
N14523AIRBUS Airbus A321 Neo
→
05/18/2026
4h 19m
No alerts
Replay Analysis
N68453BOEING Boeing 737-900
→
05/18/2026
1h 37m
No alerts
Replay Analysis
N14506AIRBUS Airbus A321 Neo
→
05/17/2026
3h 59m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window