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UAL838

NRT → SFO · Boeing 777-300ER · United Airlines

For travellers

Departure · Tokyo / Narita (NRT)

Terminal T1-South · Gate 31 · Check-in E
Scheduled 03 Oct 17:05 · Estimated 03 Oct 17:04
Board status: DEPARTED
Airborne since 03 Oct 17:28 (ADS-B)

Arrival · San Francisco (SFO)

Terminal ITM · Gate G2 · Baggage belt CL2
Scheduled 10:35 · Landed 10:03 · early
Board status: Arrived
Landed 10:03 (airport data)

Board data from narita, sfo, updated 471 min ago; times local to each airport.

Flight

Status
Completed (landing confirmed by airport data)
Arrival confirmed via
Airport data (confirmed)
Departure
Narita International Airport (NRT) — Tokyo / Narita, Japan
Scheduled departure
2026-10-03 08:05 UTC
Departed
2026-10-03 08:28 UTC
Arrival
San Francisco International Airport (SFO) — San Francisco, United States
Scheduled arrival
2026-10-03 17:35 UTC
Estimated arrival
2026-10-03 17:08 UTC
Also flies as
UA838
Codeshares
NH7012
Distance flown
449 km
Straight-line distance
8228 km

Aircraft

Registration
N2333U
Type
Boeing 777-300ER
Seats
350 total (204 Economy, 62 Economy Plus, 24 Premium Plus, 60 Polaris)
CO2 (EMEP est., total)
593.6 t (1237 kg/pax Economy, 1550 kg/pax Premium Economy, 3782 kg/pax Business)

Altitude & speed

Max altitude
33,025 ft
Max ground speed
573 kt
Tracked
30m · 448 km
Altitude (ft, max 33,025)
017,83435,6670m30m
Ground speed (kt, max 573)
03096190m30m
Altitude (ft, max 33,025)
017,83435,6670m
Ground speed (kt, max 573)
03096190m

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 03:54 UTC UAL838 ? → ? N37319 Boeing 737 MAX 8 In progress —
2026-10-04 02:14 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N37319 Boeing 737 MAX 8 Incomplete (signal lost) ~2557 km est. (566 km recorded)
2026-10-03 15:49 UTC UAL838 ? → SFO
? → San Francisco
 N2333U Boeing 777-300ER Completed 861 km
2026-10-03 08:28 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2333U Boeing 777-300ER Completed (landing confirmed by airport data) ~8382 km est. (449 km recorded)
2026-10-03 04:21 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N17303 Boeing 737 MAX 8 Completed 1263 km
2026-10-03 02:46 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17303 Boeing 737 MAX 8 Incomplete (signal lost) ~2526 km est. (547 km recorded)
2026-10-02 16:20 UTC UAL838 ? → SFO
? → San Francisco
 N2332U Boeing 777-300ER Completed 562 km
2026-10-02 08:28 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2332U Boeing 777-300ER Completed (landing confirmed by airport data) ~8365 km est. (372 km recorded)
2026-10-02 03:53 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N37319 Boeing 737 MAX 8 Completed 1219 km
2026-10-02 02:13 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N37319 Boeing 737 MAX 8 Incomplete (signal lost) ~2541 km est. (559 km recorded)
2026-10-01 15:59 UTC UAL838 ? → SFO
? → San Francisco
 N2341U Boeing 777-300ER Completed 656 km
2026-10-01 08:14 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2341U Boeing 777-300ER Completed (landing confirmed by airport data) ~8459 km est. (481 km recorded)
2026-10-01 03:59 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N17322 Boeing 737 MAX 8 Completed 1190 km
2026-10-01 02:15 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17322 Boeing 737 MAX 8 Incomplete (signal lost) ~2560 km est. (577 km recorded)
2026-09-30 16:31 UTC UAL838 ? → SFO
? → San Francisco
 N2737U Boeing 777-300ER Completed 518 km
2026-09-30 08:30 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2737U Boeing 777-300ER Completed (landing confirmed by airport data) ~8358 km est. (442 km recorded)
2026-09-30 03:41 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N37319 Boeing 737 MAX 8 Completed 1229 km
2026-09-30 01:58 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N37319 Boeing 737 MAX 8 Incomplete (signal lost) ~2557 km est. (570 km recorded)
2026-09-29 08:31 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2748U Boeing 777-300ER Completed 8420 km
2026-09-29 03:57 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N17316 Boeing 737 MAX 8 Completed 1210 km
2026-09-29 02:13 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17316 Boeing 737 MAX 8 Incomplete (signal lost) ~2553 km est. (573 km recorded)
2026-09-28 02:01 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17309 Boeing 737 MAX 8 Completed 2845 km
2026-09-27 08:48 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2136U Boeing 777-300ER Completed 8410 km
2026-09-27 03:52 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N17306 Boeing 737 MAX 8 Completed 1218 km
2026-09-27 02:09 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17306 Boeing 737 MAX 8 Incomplete (signal lost) ~2550 km est. (559 km recorded)
2026-09-26 08:24 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2250U Boeing 777-300ER Completed 8449 km
2026-09-26 03:51 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N17309 Boeing 737 MAX 8 Completed 1209 km
2026-09-26 02:12 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17309 Boeing 737 MAX 8 Incomplete (signal lost) ~2535 km est. (558 km recorded)
2026-09-25 11:12 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2331U Boeing 777-300ER Completed 8379 km
2026-09-25 04:06 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N27304 Boeing 737 MAX 8 Completed 896 km
2026-09-25 02:00 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N27304 Boeing 737 MAX 8 Incomplete (signal lost) ~2592 km est. (1172 km recorded)
2026-09-24 08:18 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2737U Boeing 777-300ER Completed 8417 km
2026-09-24 03:39 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N17322 Boeing 737 MAX 8 Completed 1211 km
2026-09-24 02:00 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17322 Boeing 737 MAX 8 Incomplete (signal lost) ~2529 km est. (598 km recorded)
2026-09-23 08:34 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2250U Boeing 777-300ER Completed 8452 km
2026-09-23 02:04 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N27304 Boeing 737 MAX 8 Completed 2617 km
2026-09-22 08:39 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2138U Boeing 777-300ER Completed 8438 km
2026-09-22 03:02 UTC UAL838 ? → NRT
? → Tokyo / Narita
 N17316 Boeing 737 MAX 8 Completed 899 km
2026-09-22 01:55 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17316 Boeing 737 MAX 8 Incomplete (signal lost) ~2590 km est. (1121 km recorded)
2026-09-20 08:42 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2639U Boeing 777-300ER Completed 8456 km
2026-09-20 02:20 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N37319 Boeing 737 MAX 8 Completed 2665 km
2026-09-19 08:26 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2332U Boeing 777-300ER Completed 8443 km
2026-09-19 02:03 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17316 Boeing 737 MAX 8 Completed 2710 km
2026-09-18 08:31 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2352U Boeing 777-300ER Completed 8480 km
2026-09-18 01:59 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17309 Boeing 737 MAX 8 Completed 2657 km
2026-09-17 10:31 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2846U Boeing 777-300ER Completed 8505 km
2026-09-17 02:01 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17306 Boeing 737 MAX 8 Completed 2686 km
2026-09-16 08:23 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2135U Boeing 777-300ER Completed 8623 km
2026-09-16 02:01 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17309 Boeing 737 MAX 8 Completed 2663 km
2026-09-15 08:32 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2250U Boeing 777-300ER Completed 8635 km

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