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UAL543

ORD → SFO · Boeing 737-900 · United Airlines

For travellers

Departure · Chicago (ORD)

Terminal 1 · Gate C22
Scheduled 29 Sep 10:39 · Departed 29 Sep 10:32 · early
Board status: Active
Airborne since 29 Sep 10:51 (ADS-B)

Arrival · San Francisco (SFO)

Terminal T2 · Gate D8 · Baggage belt 4
Scheduled 29 Sep 13:33 · Landed 29 Sep 13:09 · early
Board status: Arrived
Landed 29 Sep 14:52 (ADS-B)

Board data from ord, sfo, updated 6308 min ago; times local to each airport.

Flight

Status
Completed
Arrival confirmed via
ADS-B (callsign change)
Departure
Chicago O'Hare International Airport (ORD) — Chicago, United States
Scheduled departure
2026-09-29 15:39 UTC
Departed
2026-09-29 15:51 UTC
Arrival
San Francisco International Airport (SFO) — San Francisco, United States
Scheduled arrival
2026-09-29 20:33 UTC
Also flies as
UA543
Codeshares
AC4163, EK6303, NZ9321
Distance flown
3028 km
Straight-line distance
2964 km
Approach distance
68 km

Aircraft

Registration
N66893
Type
Boeing 737-900
Seats
179 total (117 Economy, 42 Economy Plus, 20 First)
CO2 (EMEP est., total)
73.4 t (560 kg/pax Business, 390 kg/pax Economy)

Altitude & speed

Max altitude
34,000 ft
Max ground speed
505 kt
Tracked
6h 8m · 3,016 km
Altitude (ft, max 34,000)
018,36036,7200m1h 0m2h 0m3h 0m4h 0m5h 0m6h 0m
Ground speed (kt, max 505)
02735450m1h 0m2h 0m3h 0m4h 0m5h 0m6h 0m
Altitude (ft, max 34,000)
018,36036,7200m2h 0m4h 0m6h 0m
Ground speed (kt, max 505)
02735450m2h 0m4h 0m6h 0m

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

DepartedFlightRouteRegAircraftStatusDistance
2026-10-04 11:13 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N431UA Airbus A320 233 In progress ~760 km est.
2026-10-03 16:00 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N37471 Boeing 737-900 Completed 3161 km
2026-10-03 11:13 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N496UA Airbus A320 233 Completed (landing confirmed by airport data) 891 km
2026-10-02 16:39 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N62849 Boeing 737-900 Completed 3023 km
2026-10-02 11:09 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N451UA Airbus A320 233 Completed (landing confirmed by airport data) 870 km
2026-10-01 16:28 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N75436 Boeing 737-900 Completed 3009 km
2026-10-01 11:15 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N432UA Airbus A320 233 Completed 825 km
2026-09-30 16:13 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N37462 Boeing 737-900 Completed 3030 km
2026-09-30 11:13 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N435UA Airbus A320 233 Completed 805 km
2026-09-29 15:51 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N66893 Boeing 737-900 Completed 3028 km
2026-09-29 11:11 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N440UA Airbus A320 233 Completed 840 km
2026-09-28 16:48 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N66848 Boeing 737-900 Completed 3043 km
2026-09-28 11:09 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N489UA Airbus A320 233 Completed 823 km
2026-09-27 19:22 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N61886 Boeing 737-900 Completed 3015 km
2026-09-27 16:54 UTC UAL543 MSN → ORD
Madison → Chicago
 N61886 Boeing 737-900 Completed 272 km
2026-09-27 11:13 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N467UA Airbus A320 233 Completed 1040 km
2026-09-26 15:51 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N62892 Boeing 737-900 Completed 3033 km
2026-09-25 17:07 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N37437 Boeing 737-900 Completed 3197 km
2026-09-25 11:15 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N440UA Airbus A320 233 Completed 911 km
2026-09-24 16:04 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N36472 Boeing 737-900 Completed 3050 km
2026-09-24 11:02 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N87513 Boeing 737-800 Completed 902 km
2026-09-23 15:52 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N47446 Boeing 737 MAX 9 Completed 3116 km
2026-09-23 11:05 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N33209 Boeing 737-800 Completed 887 km
2026-09-22 16:03 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N37447 Boeing 737 MAX 9 Completed 3022 km
2026-09-22 11:09 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N37527 Boeing 737 MAX 9 Completed 889 km
2026-09-21 17:29 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N27586 Boeing 737 MAX 9 Completed 3038 km
2026-09-21 11:31 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N77261 Boeing 737-800 Completed 888 km
2026-09-20 16:58 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N37538 Boeing 737 MAX 9 Completed 3137 km
2026-09-20 12:05 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N17233 Boeing 737-800 Completed 951 km
2026-09-19 18:44 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N17593 Boeing 737 MAX 9 Completed 3254 km
2026-09-19 13:15 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N76515 Boeing 737-800 Completed 914 km
2026-09-18 17:16 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N27568 Boeing 737 MAX 9 Completed 3472 km
2026-09-18 10:55 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N76523 Boeing 737-800 Completed 919 km
2026-09-17 18:33 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N47453 Boeing 737 MAX 9 Completed 3175 km
2026-09-17 12:43 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N37506 Boeing 737 MAX 9 Completed 862 km
2026-09-16 15:41 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N17444 Boeing 737 MAX 9 Completed 3473 km
2026-09-16 11:33 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N63899 Boeing 737-900 Completed 905 km
2026-09-15 16:47 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N77471 Boeing 737 MAX 9 Completed 3315 km
2026-09-15 12:17 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N27239 Boeing 737-800 Completed 959 km
2026-09-14 15:46 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N17597 Boeing 737 MAX 9 Completed 3224 km
2026-09-14 11:07 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N27239 Boeing 737-800 Completed 937 km
2026-09-13 15:41 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N27509 Boeing 737 MAX 9 Completed 3257 km
2026-09-13 11:19 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N87527 Boeing 737-800 Completed 847 km
2026-09-12 16:06 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N54558 Airbus A321 Neo Completed 3196 km
2026-09-12 11:07 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N14237 Boeing 737-800 Completed 853 km
2026-09-11 16:56 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N27474 Boeing 737 MAX 9 Completed 3244 km
2026-09-11 10:54 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N77510 Boeing 737-800 Completed 943 km
2026-09-10 15:40 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N27526 Boeing 737 MAX 9 Completed 3273 km
2026-09-10 10:34 UTC UAL543 BUF → ORD
Buffalo → Chicago
 N25201 Boeing 737-800 Completed 840 km
2026-09-09 16:09 UTC UAL543 ORD → SFO
Chicago → San Francisco
 N37415 Boeing 737 MAX 9 Completed 3277 km

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