Chicago (MDW) to Grand Rapids (GRR): On-Time Performance
Data through May 2026
Chicago (MDW) to Grand Rapids (GRR) effectively runs on two schedules. In October 2024, 91% of arrivals were on time; in December 2025 that fell to 65% — a 26-point seasonal swing. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 67%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 2.5
- last 12 months
- Duration
- 54m
- scheduled
- Distance
- 137 mi
Monthly on-time trend
Best time to fly from MDW to GRR
Aim for departures around 10 a.m. (92% on-time); avoid 10 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 13 min |
| Tuesday | 81% | 14 min |
| Wednesday | 85% | 8 min |
| Thursday | 73% | 17 min |
| Friday | 77% | 16 min |
| Saturdaybest | 85% | 11 min |
| Sunday | 72% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft56%
- Airline operations30%
- National airspace system10%
- Weather3%
Frequently asked questions
- How often are flights from MDW to GRR delayed?
- 22% of MDW–GRR flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 14 minutes.
- What is the best time of day to fly from MDW to GRR?
- Departures around 10 a.m. have the best record (92% on-time), while departures around 10 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MDW to GRR?
- The scheduled MDW–GRR flight time averages 54m over 137 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are MDW to GRR flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from MDW to GRR?
- December 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 1,783 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.