YAFT.LIVE

UAL540

SAN → ORD · Boeing 737 MAX 9 · United Airlines

For travellers

Departure · San Diego (SAN)

Gate 39
Scheduled 03 Oct 22:30 · Departed 03 Oct 22:30
Board status: Departed
Airborne since 03 Oct 22:24 (ADS-B)

Arrival · Chicago (ORD)

Terminal 1 · Gate C18A
Scheduled 04:33 · Landed 04:10 · early
Board status: Active
Landed 04:10 (airport data)

Board data from ord, san, updated 55 min ago; times local to each airport.

Flight

Status
Completed (landing confirmed by airport data)
Arrival confirmed via
Airport data (confirmed)
Departure
San Diego International Airport (SAN) — San Diego, United States
Scheduled departure
2026-10-04 05:30 UTC
Departed
2026-10-04 05:24 UTC
Arrival
Chicago O'Hare International Airport (ORD) — Chicago, United States
Scheduled arrival
2026-10-04 09:33 UTC
Estimated arrival
2026-10-04 09:03 UTC
Also flies as
UA540
Codeshares
AC4266
Distance flown
2923 km
Straight-line distance
2768 km

Aircraft

Registration
N17557
Type
Boeing 737 MAX 9
Seats
179 total (117 Economy, 42 Economy Plus, 20 First)
CO2 (EMEP est., total)
57.3 t (406 kg/pax Business, 310 kg/pax Economy)

Altitude & speed

Max altitude
37,025 ft
Max ground speed
528 kt
Tracked
3h 47m · 2,915 km
Altitude (ft, max 37,025)
019,99439,9870m30m1h 0m1h 30m2h 0m2h 30m3h 0m3h 30m
Ground speed (kt, max 528)
02855700m30m1h 0m1h 30m2h 0m2h 30m3h 0m3h 30m
Altitude (ft, max 37,025)
019,99439,9870m1h 0m2h 0m3h 0m
Ground speed (kt, max 528)
02855700m1h 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
2026-10-04 05:24 UTC UAL540 SAN → ORD
San Diego → Chicago
 N17557 Boeing 737 MAX 9 Completed (landing confirmed by airport data) 2923 km
2026-10-04 01:21 UTC UAL540 DEN → SAN
Denver → San Diego
 N14507 Airbus A321 Neo Completed 1410 km
2026-10-03 20:07 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14553 Airbus A321 Neo Completed (landing confirmed by airport data) 1674 km
2026-10-03 03:46 UTC UAL540 DEN → SAN
Denver → San Diego
 N14530 Airbus A321 Neo Completed 1415 km
2026-10-02 17:26 UTC UAL540 SAN → ORD
San Diego → Chicago
 N57416 Boeing 737 MAX 9 Completed 2918 km
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 22:29 UTC UAL540 DEN → DEN
Denver → Denver
 N14518 Airbus A321 Neo Completed ~3 km est. (2 km recorded)
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 20:17 UTC UAL540 SFO → DEN
San Francisco → Denver
 N24568 Airbus A321 Neo Completed 1702 km
2026-09-28 05:49 UTC UAL540 SAN → ORD
San Diego → Chicago
 N37535 Boeing 737 MAX 9 Completed 2881 km
2026-09-28 02:01 UTC UAL540 DEN → SAN
Denver → San Diego
 N44501 Airbus A321 Neo Completed 1397 km
2026-09-27 20:41 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14554 Airbus A321 Neo Completed 1689 km
2026-09-27 05:28 UTC UAL540 SAN → ORD
San Diego → Chicago
 N17422 Boeing 737 MAX 9 Completed 2947 km
2026-09-27 01:17 UTC UAL540 DEN → SAN
Denver → San Diego
 N14511 Airbus A321 Neo Completed 1408 km
2026-09-26 19:46 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14504 Airbus A321 Neo Completed 1664 km
2026-09-25 19:55 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14566 Airbus A321 Neo Completed 1924 km
2026-09-25 05:42 UTC UAL540 SAN → ORD
San Diego → Chicago
 N17406 Boeing 737 MAX 9 Completed 2845 km
2026-09-25 02:28 UTC UAL540 DEN → SAN
Denver → San Diego
 N14518 Airbus A321 Neo Completed 1415 km
2026-09-24 20:17 UTC UAL540 SFO → DEN
San Francisco → Denver
 N34535 Airbus A321 Neo Completed 1662 km
2026-09-24 01:15 UTC UAL540 DEN → SAN
Denver → San Diego
 N14529 Airbus A321 Neo Completed 1420 km
2026-09-23 20:02 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14565 Airbus A321 Neo Completed 1754 km
2026-09-23 01:10 UTC UAL540 DEN → SAN
Denver → San Diego
 N24537 Airbus A321 Neo Completed 1415 km
2026-09-22 20:39 UTC UAL540 SFO → DEN
San Francisco → Denver
 N24508 Airbus A321 Neo Completed 1832 km
2026-09-22 01:39 UTC UAL540 DEN → SAN
Denver → San Diego
 N14502 Airbus A321 Neo Completed 1407 km
2026-09-21 19:57 UTC UAL540 SFO → DEN
San Francisco → Denver
 N24555 Airbus A321 Neo Completed 1694 km
2026-09-21 01:48 UTC UAL540 DEN → SAN
Denver → San Diego
 N34562 Airbus A321 Neo Completed 1417 km
2026-09-20 20:02 UTC UAL540 SFO → DEN
San Francisco → Denver
 N17443 Boeing 737 MAX 9 Completed 1661 km
2026-09-20 01:23 UTC UAL540 DEN → SAN
Denver → San Diego
 N24516 Airbus A321 Neo Completed 1439 km
2026-09-19 19:42 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14527 Airbus A321 Neo Completed 1936 km
2026-09-19 01:58 UTC UAL540 DEN → SAN
Denver → San Diego
 N14553 Airbus A321 Neo Completed 1446 km
2026-09-18 20:32 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14576 Airbus A321 Neo Completed 2320 km
2026-09-18 02:54 UTC UAL540 DEN → SAN
Denver → San Diego
 N24514 Airbus A321 Neo Completed 1445 km
2026-09-17 19:46 UTC UAL540 SFO → DEN
San Francisco → Denver
 N34562 Airbus A321 Neo Completed 1741 km
2026-09-17 01:17 UTC UAL540 DEN → SAN
Denver → San Diego
 N14503 Airbus A321 Neo Completed 1721 km
2026-09-16 19:40 UTC UAL540 SFO → DEN
San Francisco → Denver
 N24513 Airbus A321 Neo Completed 1811 km
2026-09-16 01:08 UTC UAL540 DEN → SAN
Denver → San Diego
 N14553 Airbus A321 Neo Completed 1748 km
2026-09-15 20:18 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14504 Airbus A321 Neo Completed 2005 km
2026-09-15 02:19 UTC UAL540 DEN → SAN
Denver → San Diego
 N14548 Airbus A321 Neo Completed 1442 km
2026-09-14 19:33 UTC UAL540 SFO → DEN
San Francisco → Denver
 N34551 Airbus A321 Neo Completed 1864 km
2026-09-14 02:42 UTC UAL540 DEN → SAN
Denver → San Diego
 N14569 Airbus A321 Neo Completed 1476 km
2026-09-13 19:32 UTC UAL540 SFO → DEN
San Francisco → Denver
 N14534 Airbus A321 Neo Completed 1743 km
2026-09-13 01:05 UTC UAL540 DEN → SAN
Denver → San Diego
 N54538 Airbus A321 Neo Completed 1467 km

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