Grand Rapids (GRR) to Chicago (ORD): On-Time Performance
Data through July 2026
Grand Rapids (GRR) to Chicago (ORD) effectively runs on two schedules. In October 2024, 84% of arrivals were on time; in December 2025 that fell to 55% — a 29-point seasonal swing. Across the full period the route averages 72% on-time against a national 78%. Morning departures also hold up better than evening ones (80% vs 56%), which matters most in the rough months.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 25 min
- completed flights
- Cancelled
- 2.0%
- Flights/day
- 11
- last 12 months
- Duration
- 1h 14m
- scheduled
- Distance
- 137 mi
Best airline from GRR to ORD
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 79% | 16 min | 1.9% | 1,585 |
| American Airlines | 76% | 29 min | 2.7% | 898 |
| United Airlines | 71% | 24 min | 1.1% | 1,782 |
| Envoy Air | 69% | 22 min | 2.6% | 1,514 |
| SkyWest Airlines | 66% | 34 min | 2.4% | 1,552 |
Monthly on-time trend
Best time to fly from GRR to ORD
Aim for departures around 5 a.m. (88% on-time); avoid 7 p.m. departures (50%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 29 min |
| Tuesday | 75% | 20 min |
| Wednesday | 73% | 20 min |
| Thursday | 72% | 24 min |
| Friday | 67% | 27 min |
| Saturdaybest | 76% | 23 min |
| Sunday | 69% | 31 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft32%
- Airline operations31%
- National airspace system29%
- Weather9%
Frequently asked questions
- How often are flights from GRR to ORD delayed?
- 28% of GRR–ORD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 25 minutes.
- Which airline is most reliable from GRR to ORD?
- Republic Airways has the best on-time record on this route at 79%, based on 1,585 flights. 5 airlines flew GRR–ORD frequently enough to compare in this period.
- What is the best time of day to fly from GRR to ORD?
- Departures around 5 a.m. have the best record (88% on-time), while departures around 7 p.m. have the worst (50%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GRR to ORD?
- The scheduled GRR–ORD flight time averages 1h 14m over 137 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are GRR to ORD flights cancelled?
- 2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from GRR to ORD?
- December 2025 was the roughest month in this dataset, with only 55% of arrivals on time. The best was October 2024 at 84%. If your dates are flexible, that 29-point gap is worth planning around.
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Based on 7,333 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.