BC521 TokyoHND · 17:05 NahaOKA · 19:50
BC521 by Skymark Airlines flies from Tokyo (HND) to Naha (OKA) for the Sun, Oct 18 departure.
departs HND · on schedule
board checked 20m ago · checking again in 45s
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 +5 min · 0 cancelled · 16 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at HND and OKA are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Tokyo to Naha flights today
same route · Skymark AirlinesIf BC521 is cancelled, these are the other Skymark Airlines nonstop flights from Tokyo to Naha on the same day, with scheduled departure times in HND local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How BC521 actually runs
Pro Flight Search has tracked every published board update for BC521 across the HND and OKA boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 14 confirmed landings · 12/14 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how BC521 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: JA73NX, JA73NR, JA73AA, JA73NU.
Board clocks recorded as HND and OKA published them.
Planning around BC521? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — BC521 Tokyo to Naha on-time performance, measured from the HND and OKA airport boards.
https://proflightsearch.com/flight/BC521
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