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UAL838

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

For travellers

Departure · Tokyo / Narita (NRT)

Terminal T1-South · Gate 33 · Check-in E
Scheduled 15 Sep 17:05 · Estimated 15 Sep 17:10 · +5 min
Board status: DEPARTED
Airborne since 15 Sep 17:32 (ADS-B)

Board data from narita, updated 24327 min ago; times local to each airport.

Flight

Status
Completed
Arrival confirmed via
ADS-B (ground reading)
Departure
Narita International Airport (NRT) — Tokyo / Narita, Japan
Scheduled departure
2026-09-15 08:05 UTC
Est. departure time
2026-09-15 08:13 UTC (approx.)
Arrival
San Francisco International Airport (SFO) — San Francisco, United States
Also flies as
UA838
Distance flown
8635 km
Straight-line distance
8228 km
Approach distance
193 km

Aircraft

Registration
N2250U
Type
Boeing 777-300ER
Seats
350 total (204 Economy, 62 Economy Plus, 24 Premium Plus, 60 Polaris)
CO2 (EMEP est., total)
593.6 t (3782 kg/pax Business, 1550 kg/pax Premium Economy, 1237 kg/pax Economy)

Altitude & speed

Max altitude
35,000 ft
Max ground speed
564 kt
Tracked
9h 53m · 8,578 km
Altitude (ft, max 35,000)
018,90037,8000m1h 0m2h 0m3h 0m4h 0m5h 0m6h 0m7h 0m8h 0m9h 0m
Ground speed (kt, max 564)
03056090m1h 0m2h 0m3h 0m4h 0m5h 0m6h 0m7h 0m8h 0m9h 0m
Altitude (ft, max 35,000)
018,90037,8000m2h 0m4h 0m6h 0m8h 0m
Ground speed (kt, max 564)
03056090m2h 0m4h 0m6h 0m8h 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 08:28 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2332U Boeing 777-300ER In progress ~8228 km est.
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
2026-09-15 01:58 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17316 Boeing 737 MAX 8 Completed 2799 km
2026-09-14 08:20 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2352U Boeing 777-300ER Completed 8475 km
2026-09-14 01:57 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17306 Boeing 737 MAX 8 Completed 2766 km
2026-09-13 08:37 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2644U Boeing 777-300ER Completed 8454 km
2026-09-13 02:17 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17303 Boeing 737 MAX 8 Completed 2751 km
2026-09-12 08:15 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
 N2243U Boeing 777-300ER Completed 8471 km
2026-09-12 02:11 UTC UAL838 KHH → NRT
Kaohsiung City → Tokyo / Narita
 N17306 Boeing 737 MAX 8 Completed 2738 km

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