4B861 MassenaMSS BostonBOS · 09:50
4B861 by Boutique Air flies from Massena (MSS) to Boston (BOS).
tracked route MSS → BOS
The route today
live boardsHow 4B861 actually runs
Pro Flight Search has tracked every published board update for 4B861 across the MSS and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed +18 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how 4B861 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 MSS and BOS published them.
Planning around 4B861? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — 4B861 Massena to Boston on-time performance, measured from the MSS and BOS airport boards.
https://proflightsearch.com/flight/4B861
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