4B866 BostonBOS · 18:30 MassenaMSS
4B866 by Boutique Air flies from Boston (BOS) to Massena (MSS).
scheduled from 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 boardsTomorrow on this route
ForecastBoston to Massena with Boutique Air · Mon 2 Nov, local date
- Chance a departure is cancelled
- 0.5%0.5× usual
- Chance a departure leaves 60+ min late
- 8.6%0.6× usual
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 2 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When 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 that show a delay still operate. Rebooking usually helps only when that delay is very large. 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. Usually departs ~33 min early. Based on 4 confirmed departures · 4/4 within 15 min of schedule.
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
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
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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