4B866 BostonBOS · 18:30 MassenaMSS
4B866 by Boutique Air flies from Boston (BOS) to Massena (MSS).
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 Massena flights today
same route · Boutique AirIf 4B866 is cancelled, these are the other Boutique Air nonstop flights from Boston to Massena 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 4B866 actually runs
Pro Flight Search has tracked every published board update for 4B866 across the BOS and MSS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed -29 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how 4B866 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 MSS published them.
Planning around 4B866? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — 4B866 Boston to Massena on-time performance, measured from the BOS and MSS airport boards.
https://proflightsearch.com/flight/4B866
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