Route Reliability
Philadelphia → Grand Rapids
PHL–GRR · 573 miles · Philadelphia International Airport to Gerald R. Ford International Airport
- 79%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 3.1%
- Cancelled
- 516
- Flights in the data
Data through May 2026.
Airlines on this route
- American Airlines79% on time · 513 flights
- Allegiant Air100% 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 3–6 PM departure wins.
PHL–GRR flights departing between 3–6 PM arrived on time 89% of the time, versus 67% between 6–9 PM.
Sunday scaries are real for this one.
PHL–GRR flights arrived on time 89% of the time on Thursdays and just 71% on Sundays. That gap is worth planning around.
Keep a backup plan handy.
This route was cancelled 3.1% of the time. Typical for U.S. flights is around 1–2%.
Trending in the right direction.
PHL–GRR flights arrived on time 84% of the time over the last three months in the data, compared with 72% in the three months before that.
Flights on this route
The breakdown
- Mon77%(74 flights)
- Tue77%(60 flights)
- Wed86%(71 flights)
- Thu89%(73 flights)
- Fri80%(76 flights)
- Sat73%(74 flights)
- Sun71%(72 flights)
- 6–9 AM87%(78 flights)
- 9 AM–12 PM85%(170 flights)
- 12–3 PM70%(79 flights)
- 3–6 PM89%(28 flights)
- 6–9 PM67%(18 flights)
- 9 PM–12 AM71%(127 flights)
Jun 76% → May 78% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 49 |
| July 2025 | 69% | 55 |
| August 2025 | 89% | 55 |
| September 2025 | 81% | 57 |
| October 2025 | 82% | 62 |
| November 2025 | 81% | 31 |
| December 2025 | 57% | 30 |
| January 2026 | 79% | 28 |
| February 2026 | 82% | 27 |
| March 2026 | 84% | 31 |
| April 2026 | 90% | 30 |
| May 2026 | 78% | 45 |
Keep nerding
Based on 516 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.