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UAL552

SFO → ONT · Boeing 737 MAX 9 · United Airlines

For travellers

Departure · San Francisco (SFO)

Terminal T3 · Gate E3
Scheduled 01 Oct 21:25 · Departed 01 Oct 21:28
Board status: Departed
Airborne since 01 Oct 21:40 (ADS-B)

Board data from sfo, updated 397 min ago; times local to each airport.

Flight

Status
Completed
Arrival confirmed via
ADS-B (ground reading)
Departure
San Francisco International Airport (SFO) — San Francisco, United States
Scheduled departure
2026-10-02 04:25 UTC
Departed
2026-10-02 04:40 UTC
Arrival
Ontario International Airport (ONT) — Ontario, United States
Also flies as
UA552
Codeshares
AC4122, CM1456
Distance flown
679 km
Straight-line distance
585 km
Approach distance
58 km

Aircraft

Registration
N37535
Type
Boeing 737 MAX 9
Seats
179 total (117 Economy, 42 Economy Plus, 20 First)
CO2 (EMEP est., total)
12.4 t (88 kg/pax Business, 67 kg/pax Economy)

Altitude & speed

Max altitude
35,000 ft
Max ground speed
512 kt
Tracked
1h 26m · 677 km
Altitude (ft, max 35,000)
018,90037,8000m30m1h 0m
Ground speed (kt, max 512)
02765530m30m1h 0m
Altitude (ft, max 35,000)
018,90037,8000m1h 0m
Ground speed (kt, max 512)
02765530m1h 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
2026-10-02 04:40 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N37535 Boeing 737 MAX 9 Completed 679 km
2026-10-01 22:12 UTC UAL552 MSP → SFO
Minneapolis → San Francisco
 N47330 Boeing 737 MAX 8 Completed 2639 km
2026-10-01 04:44 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N77426 Boeing 737 MAX 9 Completed 669 km
2026-09-30 22:10 UTC UAL552 MSP → SFO
Minneapolis → San Francisco
 N17373 Boeing 737 MAX 8 Completed 2716 km
2026-09-29 22:13 UTC UAL552 MSP → SFO
Minneapolis → San Francisco
 N17346 Boeing 737 MAX 8 Completed 2754 km
2026-09-29 04:28 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N895UA Airbus A319 Completed 685 km
2026-09-28 22:40 UTC UAL552 MSP → SFO
Minneapolis → San Francisco
 N47298 Boeing 737 MAX 8 Completed 2630 km
2026-09-28 05:08 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N17458 Boeing 737 MAX 9 Completed 680 km
2026-09-27 22:11 UTC UAL552 MSP → SFO
Minneapolis → San Francisco
 N37352 Boeing 737 MAX 8 Completed 2652 km
2026-09-27 04:32 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N35260 Boeing 737-800 Completed 677 km
2026-09-26 04:50 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N76516 Boeing 737-800 Completed 688 km
2026-09-25 23:30 UTC UAL552 MSP → SFO
Minneapolis → San Francisco
 N17595 Boeing 737 MAX 9 Completed 2799 km
2026-09-25 05:00 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N17438 Boeing 737 MAX 9 Completed 709 km
2026-09-24 23:09 UTC UAL552 MSP → SFO
Minneapolis → San Francisco
 N17265 Boeing 737 MAX 8 Completed 2739 km
2026-09-23 14:37 UTC UAL552 SMF → IAH
Sacramento → Houston
 N31412 Boeing 737-900 Completed (landing presumed) 2680 km
2026-09-22 14:46 UTC UAL552 SMF → IAH
Sacramento → Houston
 N72405 Boeing 737-900 Incomplete (signal lost) 2873 km
2026-09-22 04:14 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N27503 Boeing 737 MAX 9 Completed 678 km
2026-09-21 04:24 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N57478 Boeing 737 MAX 9 Completed 679 km
2026-09-19 14:33 UTC UAL552 SMF → IAH
Sacramento → Houston
 N17432 Boeing 737 MAX 9 Completed (landing presumed) 2788 km
2026-09-19 04:16 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N37506 Boeing 737 MAX 9 Completed 695 km
2026-09-18 04:54 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N37556 Boeing 737 MAX 9 Completed 712 km
2026-09-16 14:40 UTC UAL552 SMF → IAH
Sacramento → Houston
 N37408 Boeing 737-900 Completed 2812 km
2026-09-15 14:35 UTC UAL552 SMF → IAH
Sacramento → Houston
 N32404 Boeing 737-900 Completed 2879 km
2026-09-15 04:06 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N37535 Boeing 737 MAX 9 Completed 728 km
2026-09-14 04:38 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N87442 Boeing 737 MAX 9 Completed 715 km
2026-09-12 14:22 UTC UAL552 SMF → IAH
Sacramento → Houston
 N17430 Boeing 737 MAX 9 Completed 2884 km
2026-09-11 17:12 UTC UAL552 IAH → SBN
Houston → South Bend
 N67812 Boeing 737-900 Completed 1675 km
2026-09-09 14:34 UTC UAL552 SMF → ?
Sacramento → ?
 N30401 Boeing 737-900 Incomplete (signal lost) 2824 km
2026-09-08 04:20 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N17455 Boeing 737 MAX 9 Completed 718 km
2026-09-05 16:40 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N27290 Boeing 737 MAX 8 Completed 4155 km
2026-09-05 04:23 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N447UA Airbus A320 233 Completed 708 km
2026-09-04 04:35 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N37535 Boeing 737 MAX 9 Completed 725 km
2026-09-02 16:44 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N17272 Boeing 737 MAX 8 Completed 4178 km
2026-09-01 16:42 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N17593 Boeing 737 MAX 9 Completed 4107 km
2026-09-01 05:07 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N27474 Boeing 737 MAX 9 Completed 696 km
2026-08-31 04:22 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N37523 Boeing 737 MAX 9 Completed 726 km
2026-08-29 16:39 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N39297 Boeing 737-800 Completed 4175 km
2026-08-29 04:55 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N447UA Airbus A320 233 Completed 726 km
2026-08-28 04:26 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N17413 Boeing 737 MAX 9 Completed 699 km
2026-08-26 16:45 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N17296 Boeing 737 MAX 8 Completed 4142 km
2026-08-25 16:34 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N17408 Boeing 737 MAX 9 Completed 4189 km
2026-08-25 04:20 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N37447 Boeing 737 MAX 9 Completed 696 km
2026-08-24 05:07 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N47462 Boeing 737 MAX 9 Completed 701 km
2026-08-22 16:42 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N27287 Boeing 737 MAX 8 Completed 5879 km
2026-08-22 05:20 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N488UA Airbus A320 233 Completed 1090 km
2026-08-21 04:24 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N17550 Boeing 737 MAX 9 Completed 772 km
2026-08-19 16:44 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N37318 Boeing 737 MAX 8 Completed 7366 km
2026-08-18 16:36 UTC UAL552 RDU → SFO
Raleigh/Durham → San Francisco
 N77426 Boeing 737 MAX 9 Completed 8086 km
2026-08-18 04:17 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N77573 Boeing 737 MAX 9 Completed 868 km
2026-08-17 04:33 UTC UAL552 SFO → ONT
San Francisco → Ontario
 N68842 Boeing 737-900 Completed 879 km

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