4B861 MassenaMSS BostonBOS · 09:50
4B861 by Boutique Air flies from Massena (MSS) to Boston (BOS) for the Mon, Oct 19 departure.
arrival expected at BOS · on schedule
board checked 13m ago · checking again in 45s
Where the minutes go
last 4 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 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. Usually lands on time. Based on 4 confirmed landings · 3/4 within 15 min of schedule.
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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