BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
GRR→PHL

Grand Rapids, MI (GRR) to Philadelphia, PA (PHL) flight delay odds

85.2% of 277 official scheduled GRR-to-PHL flights arrived on time; 9.7% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
85.2%arrived on time
9.7%30+ min late
1.4%cancelled
277scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.5%all scheduled flights
120+ minutes late4.3%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+0.5 mincompleted flights

Which departure time was most reliable for GRR to PHL?

Among qualifying GRR-to-PHL departure window results, Early morning had the highest on-time rate: 88.0% of 117 flights. Afternoon was lowest at 83.0% across 159 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning11788.0%6.8%1.7%
Afternoon15983.0%11.9%1.3%

Which weekday was most reliable for GRR to PHL?

Among qualifying GRR-to-PHL weekday results, Friday had the highest on-time rate: 89.4% of 47 flights. Thursday was lowest at 76.2% across 42 flights.

DayFlightsOn time30+ minCancelled
Monday4586.7%6.7%2.2%
Tuesday3683.3%11.1%2.8%
Wednesday3485.3%11.8%0.0%
Thursday4276.2%19.0%2.4%
Friday4789.4%8.5%0.0%
Saturday3987.2%2.6%2.6%
Sunday3488.2%8.8%0.0%

Which airline was most reliable for GRR to PHL?

Among qualifying GRR-to-PHL airline results, Republic Airways had the highest on-time rate: 86.5% of 37 flights. PSA Airlines was lowest at 85.5% across 228 flights.

AirlineFlightsOn time30+ minCancelled
PSA Airlines22885.5%9.6%1.8%
Republic Airways3786.5%8.1%0.0%
Allegiant Air1275.0%16.7%0.0%

Which month was most reliable for GRR to PHL?

Among qualifying GRR-to-PHL month results, October 2025 had the highest on-time rate: 94.1% of 51 flights. May 2026 was lowest at 72.1% across 43 flights.

MonthFlightsOn time30+ minCancelled
August 20252588.0%4.0%0.0%
September 20255787.7%10.5%0.0%
October 20255194.1%5.9%0.0%
April 20262487.5%12.5%0.0%
May 20264372.1%11.6%2.3%
June 20266883.8%10.3%4.4%

What drove GRR to PHL delay minutes?

Airline was the largest recorded GRR-to-PHL delay category, accounting for 50.5% of 3,460 BTS-attributed delay minutes during July 2025–June 2026.

Airline50.5%
Late aircraft33.1%
National airspace8.2%
Weather8.2%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.