9K5431 BostonBOS · 15:20 NantucketACK
9K5431 by Cape Air flies from Boston (BOS) to Nantucket (ACK).
scheduled from BOS
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Boston to Nantucket flights today
same route · Cape AirIf 9K5431 is cancelled, these are the other Cape Air nonstop flights from Boston to Nantucket on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How 9K5431 actually runs
Pro Flight Search has tracked every published board update for 9K5431 across the BOS and ACK boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: departed +92 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how 9K5431 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as BOS and ACK published them.
Planning around 9K5431? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — 9K5431 Boston to Nantucket on-time performance, measured from the BOS and ACK airport boards.
https://proflightsearch.com/flight/9K5431
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