4B863 MassenaMSS BostonBOS · 13:50
4B863 by Boutique Air flies from Massena (MSS) to Boston (BOS).
tracked route MSS → BOS
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 4B863 actually runs
Pro Flight Search has tracked every published board update for 4B863 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 4B863 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 4B863? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — 4B863 Massena to Boston on-time performance, measured from the MSS and BOS airport boards.
https://proflightsearch.com/flight/4B863
.