G4579 Grand RapidsGRR PhiladelphiaPHL
G4579 by Allegiant Air flies from Grand Rapids (GRR) to Philadelphia (PHL).
scheduled from GRR
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at GRR and PHL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. 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 Grand Rapids to Philadelphia flights
same route · Allegiant AirIf G4579 is cancelled, these are the other Allegiant Air nonstop flights from Grand Rapids to Philadelphia, with scheduled departure times in GRR local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How G4579 actually runs
Pro Flight Search has tracked every published board update for G4579 across the GRR and PHL boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at GRR and PHL.
The verdict above is that record speaking, so it reflects how G4579 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around G4579? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — G4579 Grand Rapids to Philadelphia on-time performance, measured from the GRR and PHL airport boards.
https://proflightsearch.com/flight/G4579
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