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Route Reliability

Grand Rapids → Philadelphia

GRR–PHL · 573 miles · Gerald R. Ford International Airport to Philadelphia International Airport

85
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
3 min
Average arrival delay
1.4%
Cancelled
514
Flights in the data

Data through May 2026.

Airlines on this route

  • American Airlines84% on time · 511 flights
  • Allegiant Air67% on time · 3 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

The late departure is the smart one here.

GRR–PHL flights departing between 6–9 PM arrived on time 95% of the time, versus 77% between 3–6 PM.

Saturday is the weak spot.

GRR–PHL flights arrived on time 89% of the time on Tuesdays. On Saturdays: 80%.

Ticking up lately.

GRR–PHL flights arrived on time 82% of the time over the last three months in the data, compared with 77% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon82%(74 flights)
  • Tue89%(61 flights)
  • Wed85%(72 flights)
  • Thu85%(75 flights)
  • Fri87%(76 flights)
  • Sat80%(75 flights)
  • Sun81%(72 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM90%(156 flights)
  • 9 AM–12 PM81%(134 flights)
  • 12–3 PM81%(133 flights)
  • 3–6 PM77%(62 flights)
  • 6–9 PM95%(19 flights)
On-time trend by month
75%
May

Jun 87% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%52
July 202581%57
August 202588%57
September 202588%58
October 202594%62
November 202583%29
December 202570%30
January 202679%28
February 202682%27
March 202684%31
April 202687%30
May 202675%44

Keep nerding

Based on 514 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.