YAFT.LIVE

UAL838

NRT · Boeing 737 MAX 8 · United Airlines

Flight

Status
Completed
Arrival confirmed via
ADS-B (ground reading)
Departed
2026-10-01 03:59 UTC (first seen)
Arrival
Narita International Airport (NRT) — Tokyo / Narita, Japan
Distance flown
1190 km
Approach distance
58 km

Aircraft

Registration
Type
Boeing 737 MAX 8
Seats
166 total (16 Business, 150 Economy)

Altitude & speed

Max altitude
35,000 ft
Max ground speed
518 kt
Tracked
1h 33m · 1,187 km
Altitude (ft, max 35,000)
018,90037,8000m30m1h 0m1h 30m
Ground speed (kt, max 518)
02805590m30m1h 0m1h 30m
Altitude (ft, max 35,000)
018,90037,8000m1h 0m
Ground speed (kt, max 518)
02805590m1h 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
2026-10-03 08:28 UTC UAL838 NRT → SFO
Tokyo / Narita → San Francisco
N2333U Boeing 777-300ER In progress ~8228 km est.
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
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

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