G4581 BostonBOS · 10:54 Grand RapidsGRR · 13:07
G4581 by Allegiant Air flies from Boston (BOS) to Grand Rapids (GRR).
scheduled from BOS
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by BOS (Boston), currently flying MVFR (marginal visual). For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Boston to Grand Rapids flights
same route · Allegiant AirIf G4581 is cancelled, this is the other Allegiant Air nonstop flight from Boston to Grand Rapids, 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 G4581 actually runs
Pro Flight Search has tracked every published board update for G4581 across the BOS and GRR boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left right on schedule but landed about 12 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how G4581 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N257NV.
Board clocks recorded as BOS and GRR published them.
Planning around G4581? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — G4581 Boston to Grand Rapids on-time performance, measured from the BOS and GRR airport boards.
https://proflightsearch.com/flight/G4581
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