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Route Reliability

Chicago → Grand Rapids

MDW–GRR · 137 miles · Chicago Midway International Airport to Gerald R. Ford International Airport

81
Pretty Reliable
WanderNerd Reliability Score
76%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
928
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 76% of the time across 928 flights. No comparison to make.

What the data says

Morning flights do better here.

MDW–GRR flights departing between 9 AM–12 PM arrived on time 89% of the time, versus 55% between 9 PM–12 AM.

Thursdays have been rough.

MDW–GRR flights arrived on time 87% of the time on Wednesdays and just 70% on Thursdays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon73%(135 flights)
  • Tue81%(136 flights)
  • Wed87%(137 flights)
  • Thu70%(138 flights)
  • Fri75%(137 flights)
  • Sat78%(97 flights)
  • Sun73%(140 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM89%(309 flights)
  • 12–3 PM79%(175 flights)
  • 3–6 PM80%(81 flights)
  • 6–9 PM76%(137 flights)
  • 9 PM–12 AM55%(217 flights)
On-time trend by month
74%
May

Jun 71% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202571%83
July 202567%88
August 202572%86
September 202581%86
October 202585%88
November 202588%57
December 202567%60
January 202679%61
February 202680%56
March 202680%84
April 202676%84
May 202674%87

Same trip, other airports

Keep nerding

Based on 928 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.