UA540

For travellers

Departure · San Diego (SAN)

Gate 40

Scheduled 01 Oct 22:30 · Estimated 10:00 · +690 min

Board status: Delayed

Airborne since 10:26 (ADS-B)

Arrival · Chicago (ORD)

Terminal 3 · Gate G2

Scheduled 04:33 · Estimated 15:55 · +682 min

Board status: Active

In the air, ~1h 36m to go (53% of the route flown)

Board data from ord, san, updated 24 min ago; times local to each airport.

Flight

Status

In progress

Departure

San Diego International Airport (SAN) — San Diego, United States

Departed

2026-10-02 17:26 UTC

Arrival

Chicago O'Hare International Airport (ORD) — Chicago, United States (scheduled)

Scheduled arrival

2026-10-02 09:33 UTC

Estimated arrival

2026-10-02 20:55 UTC

Progress

53% · ~1h 36m remaining

Codeshares

AC4266

Distance flown

1524 km

Straight-line distance

2768 km

Aircraft

Registration

N57416

Type

Boeing 737 MAX 9

Seats

179 total (117 Economy, 42 Economy Plus, 20 First) (typical for type, not this tail)

Altitude & speed

Max altitude

37,000 ft

Max ground speed

497 kt

Tracked

1h 49m · 1,524 km

Note

still in progress - the track so far

Altitude (ft, max 37,000)

Ground speed (kt, max 497)

Altitude (ft, max 37,000)

Ground speed (kt, max 497)

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

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-02 17:26 UTC	UAL540	SAN → ORD San Diego → Chicago	N57416	Boeing 737 MAX 9	In progress	~2768 km est.
2026-10-02 01:49 UTC	UAL540	DEN → SAN Denver → San Diego	N34574	Airbus A321 Neo	Completed	1416 km
2026-10-01 19:38 UTC	UAL540	SFO → DEN San Francisco → Denver	N24510	Airbus A321 Neo	Completed	1760 km
2026-10-01 05:35 UTC	UAL540	SAN → ORD San Diego → Chicago	N17589	Boeing 737 MAX 9	Completed	2971 km
2026-10-01 01:07 UTC	UAL540	DEN → SAN Denver → San Diego	N14548	Airbus A321 Neo	Completed	1404 km
2026-09-30 19:53 UTC	UAL540	SFO → DEN San Francisco → Denver	N14518	Airbus A321 Neo	Completed	1736 km
2026-09-30 05:31 UTC	UAL540	SAN → ORD San Diego → Chicago	N77552	Boeing 737 MAX 9	Completed	2949 km
2026-09-30 01:08 UTC	UAL540	DEN → SAN Denver → San Diego	N14540	Airbus A321 Neo	Completed	1411 km
2026-09-29 19:47 UTC	UAL540	SFO → DEN San Francisco → Denver	N14530	Airbus A321 Neo	Completed	1657 km
2026-09-29 05:30 UTC	UAL540	SAN → ORD San Diego → Chicago	N77580	Boeing 737 MAX 9	Completed	2869 km
2026-09-29 02:10 UTC	UAL540	DEN → SAN Denver → San Diego	N14507	Airbus A321 Neo	Completed	1394 km
2026-09-28 05:49 UTC	UAL540	SAN → ORD San Diego → Chicago	N37535	Boeing 737 MAX 9	Completed	2881 km
2026-09-27 05:28 UTC	UAL540	SAN → ORD San Diego → Chicago	N17422	Boeing 737 MAX 9	Completed	2947 km
2026-09-26 05:37 UTC	UAL540T	SAN → ORD San Diego → Chicago	N37562	Boeing 737 MAX 9	Completed	2901 km
2026-09-25 05:42 UTC	UAL540	SAN → ORD San Diego → Chicago	N17406	Boeing 737 MAX 9	Completed	2845 km