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UAL540T

SAN → ORD · Boeing 737-900 · United Airlines

For travellers

Departure · San Diego (SAN)

Gate 50
Scheduled 02 Oct 22:30 · Departed 02 Oct 22:30
Board status: Departed
Airborne since 02 Oct 22:52 (ADS-B)

Arrival · Chicago (ORD)

Terminal 1 · Gate C18
Scheduled 04:33 · Landed 04:24 · early
Board status: Active
Landed 04:24 (ADS-B)

Board data from ord, san, updated 52 min ago; times local to each airport.

Flight

Status
Completed
Arrival confirmed via
ADS-B (ground reading)
Departure
San Diego International Airport (SAN) — San Diego, United States
Scheduled departure
2026-10-03 05:30 UTC
Departed
2026-10-03 05:52 UTC
Arrival
Chicago O'Hare International Airport (ORD) — Chicago, United States
Scheduled arrival
2026-10-03 09:33 UTC
Estimated arrival
2026-10-03 09:14 UTC
Also flies as
UA540
Codeshares
AC4266
Distance flown
2888 km
Straight-line distance
2768 km
Approach distance
81 km

Aircraft

Registration
N37434
Type
Boeing 737-900
Seats
179 total (117 Economy, 42 Economy Plus, 20 First)
CO2 (EMEP est., total)
68.7 t (525 kg/pax Business, 366 kg/pax Economy)

Altitude & speed

Max altitude
37,025 ft
Max ground speed
535 kt
Tracked
3h 32m · 2,877 km
Altitude (ft, max 37,025)
019,99439,9870m30m1h 0m1h 30m2h 0m2h 30m3h 0m3h 30m
Ground speed (kt, max 535)
02895780m30m1h 0m1h 30m2h 0m2h 30m3h 0m3h 30m
Altitude (ft, max 37,025)
019,99439,9870m1h 0m2h 0m3h 0m
Ground speed (kt, max 535)
02895780m1h 0m2h 0m3h 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
2026-10-03 05:52 UTC UAL540T SAN → ORD
San Diego → Chicago
 N37434 Boeing 737-900 Completed 2888 km
2026-10-02 20:13 UTC UAL540T SFO → DEN
San Francisco → Denver
 N24573 Airbus A321 Neo Completed 1668 km
2026-09-26 05:37 UTC UAL540T SAN → ORD
San Diego → Chicago
 N37562 Boeing 737 MAX 9 Completed 2901 km
2026-08-25 02:00 UTC UAL540T DEN → SAN
Denver → San Diego
 N14536 Airbus A321 Neo Completed 1430 km
2026-08-24 06:03 UTC UAL540T DEN → SAN
Denver → San Diego
 N14515 Airbus A321 Neo Completed 1458 km
2026-08-15 05:55 UTC UAL540T DEN → SAN
Denver → San Diego
 N14536 Airbus A321 Neo Completed ~3129 km est. (1711 km recorded)

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