WE504 TokyoNRT · 15:20 SeoulICN · 17:55
WE504 by Thai Smile flies from Tokyo (NRT) to Seoul (ICN) for the Mon, Oct 19 departure.
departs NRT · on schedule
board checked 16m ago · checking again in 45s
⚖ WE504 typically leaves +22 and lands −3. The air wins minutes back.Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −3 min · 2 cancelled · 12 operations tracked
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Tokyo to Seoul flights today
same route · Thai SmileIf WE504 is cancelled, this is the other Thai Smile nonstop flight from Tokyo to Seoul on the same day, with scheduled departure times in NRT local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WE504 actually runs
Pro Flight Search has tracked every published board update for WE504 across the NRT and ICN boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 10 confirmed landings · 9/10 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how WE504 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: HL8714.
Board clocks recorded as NRT and ICN published them.
Planning around WE504? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — WE504 Tokyo to Seoul on-time performance, measured from the NRT and ICN airport boards.
https://proflightsearch.com/flight/WE504
.