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UAL857

Boeing 777-300ER · United Airlines

Flight

Status
Incomplete (signal lost)
Departed
2026-08-10 21:34 UTC
Distance flown
9617 km

Aircraft

Registration
N2748U
Type
Boeing 777-300ER
Seats
350 total (204 Economy, 62 Economy Plus, 24 Premium Plus, 60 Polaris)

Altitude & speed

Max altitude
36,000 ft
Max ground speed
508 kt
Tracked
10h 41m · 9,353 km
Altitude (ft, max 36,000)
019,44038,8800m1h 0m2h 0m3h 0m4h 0m5h 0m6h 0m7h 0m8h 0m9h 0m10h 0m
Ground speed (kt, max 508)
02745490m1h 0m2h 0m3h 0m4h 0m5h 0m6h 0m7h 0m8h 0m9h 0m10h 0m
Altitude (ft, max 36,000)
019,44038,8800m2h 0m4h 0m6h 0m8h 0m10h 0m
Ground speed (kt, max 508)
02745490m2h 0m4h 0m6h 0m8h 0m10h 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
2026-10-01 20:42 UTC UAL857 SFO → PVG
San Francisco → Shanghai
 N2142U Boeing 777-300ER In progress ~9877 km est.
2026-09-30 20:29 UTC UAL857 SFO → PVG
San Francisco → Shanghai
 N2333U Boeing 777-300ER Incomplete (signal lost) 9435 km
2026-09-29 20:18 UTC UAL857 SFO → PVG
San Francisco → Shanghai
 N2748U Boeing 777-300ER Incomplete (signal lost) 9429 km
2026-09-28 20:59 UTC UAL857 SFO → ?
San Francisco → ?
 N2250U Boeing 777-300ER Incomplete (signal lost) 9581 km
2026-09-27 20:47 UTC UAL857 SFO → ?
San Francisco → ?
 N2136U Boeing 777-300ER Incomplete (signal lost) 9574 km
2026-09-26 20:38 UTC UAL857 SFO → ?
San Francisco → ?
 N2748U Boeing 777-300ER Incomplete (signal lost) 9773 km
2026-09-25 21:05 UTC UAL857 SFO → ?
San Francisco → ?
 N2138U Boeing 777-300ER Incomplete (signal lost) 9571 km
2026-09-24 20:51 UTC UAL857 SFO → ?
San Francisco → ?
 N2639U Boeing 777-300ER Incomplete (signal lost) 9663 km
2026-09-23 20:20 UTC UAL857 SFO → ?
San Francisco → ?
 N2250U Boeing 777-300ER Incomplete (signal lost) 9564 km
2026-09-22 20:46 UTC UAL857 SFO → ?
San Francisco → ?
 N2136U Boeing 777-300ER Incomplete (signal lost) 9716 km
2026-09-21 20:47 UTC UAL857 SFO → ?
San Francisco → ?
 N2747U Boeing 777-300ER Incomplete (signal lost) 9579 km
2026-09-20 20:26 UTC UAL857 SFO → ?
San Francisco → ?
 N2639U Boeing 777-300ER Incomplete (signal lost) 9557 km
2026-09-19 20:31 UTC UAL857 SFO → ?
San Francisco → ?
 N2138U Boeing 777-300ER Incomplete (signal lost) 9654 km
2026-09-18 20:32 UTC UAL857 SFO → ?
San Francisco → ?
 N2341U Boeing 777-300ER Incomplete (signal lost) 9693 km
2026-09-17 19:27 UTC UAL857 SFO → ?
San Francisco → ?
 N2737U Boeing 777-300ER Incomplete (signal lost) 9611 km
2026-09-16 20:54 UTC UAL857 SFO → ?
San Francisco → ?
 N2135U Boeing 777-300ER Incomplete (signal lost) 9593 km
2026-09-15 20:38 UTC UAL857 SFO → ?
San Francisco → ?
 N2737U Boeing 777-300ER Incomplete (signal lost) 9693 km
2026-09-14 20:52 UTC UAL857 SFO → ?
San Francisco → ?
 N2748U Boeing 777-300ER Incomplete (signal lost) 9640 km
2026-09-13 22:29 UTC UAL857 SFO → ?
San Francisco → ?
 N2135U Boeing 777-300ER Incomplete (signal lost) 9722 km
2026-09-12 20:30 UTC UAL857 SFO → ?
San Francisco → ?
 N2140U Boeing 777-300ER Incomplete (signal lost) 9669 km
2026-09-11 20:25 UTC UAL857 SFO → ?
San Francisco → ?
 N2138U Boeing 777-300ER Incomplete (signal lost) 9581 km
2026-09-10 20:50 UTC UAL857 SFO → ?
San Francisco → ?
 N2140U Boeing 777-300ER Incomplete (signal lost) 9576 km
2026-09-09 20:54 UTC UAL857 SFO → ?
San Francisco → ?
 N2136U Boeing 777-300ER Incomplete (signal lost) 9620 km
2026-09-07 20:51 UTC UAL857 SFO → ?
San Francisco → ?
 N2534U Boeing 777-300ER Incomplete (signal lost) 9648 km
2026-09-06 22:36 UTC UAL857 SFO → ?
San Francisco → ?
 N2135U Boeing 777-300ER Incomplete (signal lost) 9639 km
2026-09-05 21:04 UTC UAL857 SFO → ?
San Francisco → ?
 N2332U Boeing 777-300ER Incomplete (signal lost) 9586 km
2026-09-04 20:59 UTC UAL857 SFO → ?
San Francisco → ?
 N2333U Boeing 777-300ER Incomplete (signal lost) 9646 km
2026-09-03 20:55 UTC UAL857 SFO → ?
San Francisco → ?
 N2748U Boeing 777-300ER Incomplete (signal lost) 9652 km
2026-09-02 20:52 UTC UAL857 SFO → ?
San Francisco → ?
 N2251U Boeing 777-300ER Incomplete (signal lost) 9687 km
2026-09-01 20:54 UTC UAL857 SFO → ?
San Francisco → ?
 N2748U Boeing 777-300ER Incomplete (signal lost) 9570 km
2026-09-01 02:02 UTC UAL857 SFO → ?
San Francisco → ?
 N2332U Boeing 777-300ER Incomplete (signal lost) 9611 km
2026-08-30 21:13 UTC UAL857 SFO → ?
San Francisco → ?
 N2749U Boeing 777-300ER Incomplete (signal lost) 9624 km
2026-08-29 20:47 UTC UAL857 SFO → ?
San Francisco → ?
 N2644U Boeing 777-300ER Incomplete (signal lost) 9517 km
2026-08-29 00:48 UTC UAL857 SFO → ?
San Francisco → ?
 N2136U Boeing 777-300ER Incomplete (signal lost) 9624 km
2026-08-27 21:06 UTC UAL857 SFO → ?
San Francisco → ?
 N2644U Boeing 777-300ER Incomplete (signal lost) 9625 km
2026-08-26 20:53 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2331U Boeing 777-300ER Incomplete (signal lost) ~19030 km est. (9635 km recorded)
2026-08-25 22:56 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2644U Boeing 777-300ER Incomplete (signal lost) ~19120 km est. (9668 km recorded)
2026-08-24 20:59 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2639U Boeing 777-300ER Incomplete (signal lost) ~18986 km est. (9592 km recorded)
2026-08-23 22:21 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2644U Boeing 777-300ER Incomplete (signal lost) ~19025 km est. (9633 km recorded)
2026-08-22 22:23 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2534U Boeing 777-300ER Completed ~19078 km est. (9633 km recorded)
2026-08-21 23:30 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2644U Boeing 777-300ER Completed ~19966 km est. (10573 km recorded)
2026-08-19 22:51 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2644U Boeing 777-300ER Completed ~19987 km est. (10641 km recorded)
2026-08-16 20:22 UTC UAL857 SFO → ?
San Francisco → ?
 N2138U Boeing 777-300ER Completed 10535 km
2026-08-15 20:26 UTC UAL857 SFO → ?
San Francisco → ?
 N2251U Boeing 777-300ER Incomplete (signal lost) 10960 km
2026-08-14 20:29 UTC UAL857 SFO → ?
San Francisco → ?
 N2747U Boeing 777-300ER Completed 10755 km
2026-08-14 07:24 UTC UAL857 MNL → ?
Manila → ?
 N2251U Boeing 777-300ER Incomplete (signal lost) 0 km
2026-08-12 21:00 UTC UAL857 SFO → ?
San Francisco → ?
 N2333U Boeing 777-300ER Incomplete (signal lost) 9629 km
2026-08-11 20:37 UTC UAL857 SFO → ?
San Francisco → ?
 N2534U Boeing 777-300ER Incomplete (signal lost) 10594 km
2026-08-10 21:34 UTC UAL857 ? → ? N2748U Boeing 777-300ER Incomplete (signal lost) 9617 km
2026-08-10 21:19 UTC UAL857 SFO → SFO
San Francisco → San Francisco
 N2748U Boeing 777-300ER Completed ~2 km est. (0 km recorded)

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