UAL543 is operated by UNITED AIRLINES INC between Chicago O'Hare International Airport (KORD) and San Francisco International Airport (KSFO). The flight is most often flown by a AIRBUS Airbus A319. Typical block time is 2h 30m. SkyMeter has observed 209 legs of this flight number via ADS-B.

✈
FLIGHTS
209
last 90 days
⏱
AVG DURATION
2h 30m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/21/2026
first → last seen
🗺
ROUTES / TYPES
14 / 10
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

8
KORD → KSFO
78
avg 4h 7m · Chicago O'Hare → San Francisco
KSFO → KSLC
56
avg 1h 45m · San Francisco → Salt Lake City
KBUF → KORD
45
avg 1h 32m · Buffalo Niagara → Chicago O'Hare
KHAF → KSLC
5
avg 1h 38m · Half Moon Bay → Salt Lake City
KOAK → KSLC
3
avg 1h 45m · Metropolitan Oakland → Salt Lake City
US-0188 → KSLC
2
avg 1h 22m · Coast Guard Air Station San Francisco → Salt Lake City
KSFO → KBOI
1
avg 3h 14m · San Francisco → Boise Air Terminal/Gowen Field
3IL0 → KSFO
1
avg 4h 7m · Patten Industries Heliport → San Francisco

Aircraft types

Equipment used on this number

10
A319 AIRBUS Airbus A319
130
B753 BOEING Boeing 757-300
46
B772 BOEING Boeing 777-200
34
B739 BOEING Boeing 737-900
29
A320 AIRBUS Airbus A320
21
B788 BOEING Boeing 787-8 BBJ/Dreamliner
6
A21N AIRBUS Airbus A321 Neo
4
B39M BOEING Boeing 737 MAX 9
2
B738 BOEING Boeing 737-800
2
B78X BOEING Boeing 787-10 Dreamliner
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
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 UAL543

30
N855UAAIRBUS Airbus A319
→
08/21/2026
1h 38m
No alerts
Replay Analysis
N26910BOEING Boeing 787-8 BBJ/Dreamliner
→
08/18/2026
4h 24m
No alerts
Replay Analysis
N835UAAIRBUS Airbus A319
→
08/18/2026
1h 21m
No alerts
Replay Analysis
N29907BOEING Boeing 787-8 BBJ/Dreamliner
→
08/17/2026
4h 18m
No alerts
Replay Analysis
N37255BOEING Boeing 737-800
→
08/17/2026
1h 38m
No alerts
Replay Analysis
N17017BOEING Boeing 787-10 Dreamliner
→
08/16/2026
4h 6m
No alerts
Replay Analysis
N875UAAIRBUS Airbus A319
→
08/16/2026
1h 45m
No alerts
Replay Analysis
N26910BOEING Boeing 787-8 BBJ/Dreamliner
→
08/15/2026
3h 47m
No alerts
Replay Analysis
N77592BOEING Boeing 737 MAX 9
→
08/15/2026
1h 32m
No alerts
Replay Analysis
N26909BOEING Boeing 787-8 BBJ/Dreamliner
→
08/14/2026
4h 29m
No alerts
Replay Analysis
N37273BOEING Boeing 737-800
→
08/14/2026
1h 34m
No alerts
Replay Analysis
N81110
→
08/13/2026
4h 20m
No alerts
Replay Analysis
N842UAAIRBUS Airbus A319
→
08/13/2026
1h 36m
No alerts
Replay Analysis
N81110
→
08/12/2026
2h 53m
No alerts
Replay Analysis
N848UAAIRBUS Airbus A319
→
08/12/2026
1h 38m
No alerts
Replay Analysis
N20904BOEING Boeing 787-8 BBJ/Dreamliner
→
08/11/2026
3h 52m
No alerts
Replay Analysis
N20904BOEING Boeing 787-8 BBJ/Dreamliner
→
08/11/2026
7m
No alerts
Replay Analysis
N846UAAIRBUS Airbus A319
→
08/11/2026
1h 23m
No alerts
Replay Analysis
N75851BOEING Boeing 757-300
→
08/10/2026
4h 2m
No alerts
Replay Analysis
N811UAAIRBUS Airbus A319
→
08/10/2026
1h 36m
No alerts
Replay Analysis
N57855BOEING Boeing 757-300
→
08/09/2026
4h 6m
No alerts
Replay Analysis
N24510AIRBUS Airbus A321 Neo
→
08/08/2026
3h 54m
No alerts
Replay Analysis
N464UAAIRBUS Airbus A320
→
08/08/2026
48m
No alerts
Replay Analysis
N464UAAIRBUS Airbus A320
→
08/07/2026
57m
No alerts
Replay Analysis
N464UAAIRBUS Airbus A320
→
08/07/2026
1h 46m
No alerts
Replay Analysis
N57863BOEING Boeing 757-300
→
08/07/2026
3h 59m
No alerts
Replay Analysis
N57863BOEING Boeing 757-300
→
08/07/2026
11m
No alerts
Replay Analysis
N847UAAIRBUS Airbus A319
→
08/07/2026
1h 56m
No alerts
Replay Analysis
N75851BOEING Boeing 757-300
→
08/06/2026
4h 2m
No alerts
Replay Analysis
N849UAAIRBUS Airbus A319
→
08/06/2026
1h 29m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window