9K5121 NantucketACK BostonBOS · 13:59
9K5121 by Cape Air flies from Nantucket (ACK) to Boston (BOS).
scheduled from ACK
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How 9K5121 actually runs
Pro Flight Search has tracked every published board update for 9K5121 across the ACK and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed +45 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how 9K5121 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 ACK and BOS published them.
Planning around 9K5121? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — 9K5121 Nantucket to Boston on-time performance, measured from the ACK and BOS airport boards.
https://proflightsearch.com/flight/9K5121
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