Best Time to Fly MDW to GRR: On-Time Stats by Hour & Airline
Chicago Midway International → Gerald R. Ford International
Data through July 2026 · Last updated October 18, 2026
931 flights were scheduled from Chicago (MDW) to Grand Rapids (GRR) in the last 12 months, and 75.2% of those that flew arrived on time, 2.5 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (85% on time) and July the worst month (66%).
The cancellation rate was 0.9% (US average 1.8%).
MDW 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 |
|---|---|---|---|---|
| Southwest Airlines | 75.2% | 56 min | 0.9% | 931 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to GRR
On-time arrival % by scheduled departure hour (local time), 1,784 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 1 | |
| 9am–10am | 88.0% | 0.8% | 260 |
| 10am–11am | 90.7% | 0.0% | 397 |
| 11am–12pm | Limited data | 11 | |
| 12pm–1pm | Limited data | 6 | |
| 1pm–2pm | 68.3% | 0.0% | 145 |
| 2pm–3pm | 88.2% | 0.0% | 119 |
| 3pm–4pm | 83.1% | 0.0% | 83 |
| 4pm–5pm | 71.8% | 0.0% | 39 |
| 5pm–6pm | Limited data | 7 | |
| 6pm–7pm | 53.1% | 0.0% | 32 |
| 7pm–8pm | 84.3% | 0.0% | 71 |
| 8pm–9pm | 78.2% | 0.5% | 203 |
| 9pm–10pm | 59.8% | 1.8% | 276 |
| 10pm–11pm | 57.1% | 0.8% | 134 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MDW 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) | 76.7% | -4.3 pts | 3.2% | 31 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.6% | -8.4 pts | 0.0% | 62 |
| Summer peak (Jun 15 - Aug 15) | 67.8% | -13.2 pts | 0.6% | 356 |
| All other days | 81.0% | — | 0.5% | 1,335 |
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).