Best Time to Fly ORD to GRR: On-Time Stats by Hour & Airline
Chicago O'Hare International → Gerald R. Ford International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.3% of Chicago (ORD) to Grand Rapids (GRR) flights arrived on time (4,029 scheduled flights). That is 7.3 points below the national average of 77.6%.
Among 5 airlines, Envoy Air led with 76.8% on time and American Airlines was last with 59.0%.
Over 24 months, Tuesday was the most reliable day (76% on time) and December the worst month (64%).
The cancellation rate was 3.1% (US average 1.8%).
ORD to GRR on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Air | 76.8% | 62 min | 3.8% | 932 |
| Republic Airways | 73.2% | 69 min | 3.6% | 672 |
| SkyWest Airlines | 71.9% | 86 min | 4.1% | 822 |
| United Airlines | 67.5% | 77 min | 1.2% | 1,071 |
| American Airlines | 59.0% | 85 min | 3.4% | 530 |
| PSA Airlines | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to GRR
On-time arrival % by scheduled departure hour (local time), 7,134 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 83.8% | 4.5% | 111 |
| 7am–8am | 88.2% | 2.4% | 209 |
| 8am–9am | 82.7% | 1.2% | 333 |
| 9am–10am | 76.0% | 1.1% | 560 |
| 10am–11am | 83.5% | 0.1% | 727 |
| 11am–12pm | 86.0% | 2.5% | 162 |
| 12pm–1pm | 76.5% | 4.5% | 289 |
| 1pm–2pm | 77.2% | 1.4% | 552 |
| 2pm–3pm | 65.9% | 2.3% | 351 |
| 3pm–4pm | 75.6% | 0.6% | 692 |
| 4pm–5pm | 68.3% | 2.7% | 368 |
| 5pm–6pm | 66.5% | 4.5% | 247 |
| 6pm–7pm | 64.9% | 0.9% | 671 |
| 7pm–8pm | 65.0% | 3.0% | 269 |
| 8pm–9pm | 73.4% | 3.6% | 359 |
| 9pm–10pm | 68.1% | 2.5% | 836 |
| 10pm–11pm | 54.2% | 5.1% | 393 |
| 11pm–12am | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to GRR
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 52.9% | -22.3 pts | 12.8% | 141 |
| Christmas & New Year (Dec 20 - Jan 3) | 64.5% | -10.6 pts | 1.2% | 254 |
| Summer peak (Jun 15 - Aug 15) | 67.0% | -8.1 pts | 2.5% | 1,240 |
| All other days | 75.1% | — | 1.8% | 5,499 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).