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Route Reliability

Miami → Chicago

MIA–MDW · 1,182 miles · Miami International Airport to Chicago Midway International Airport

71
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
11 min
Average arrival delay
1.7%
Cancelled
520
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines73% on time · 456 flights
  • Frontier Airlines79% on time · 64 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

MIA–MDW flights departing between 3–6 AM arrived on time 100% of the time, versus 53% between 3–6 PM.

Saturdays have been rough.

MIA–MDW flights arrived on time 84% of the time on Wednesdays and just 65% on Saturdays. That gap is worth planning around.

Ticking up lately.

MIA–MDW flights arrived on time 71% of the time over the last three months in the data, compared with 68% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(76 flights)
  • Tue79%(38 flights)
  • Wed84%(44 flights)
  • Thu78%(73 flights)
  • Fri76%(72 flights)
  • Sat65%(108 flights)
  • Sun68%(95 flights)
On-time by departure window
  • 3–6 AM100%(18 flights)
  • 6–9 AM88%(173 flights)
  • 9 AM–12 PM81%(57 flights)
  • 12–3 PM69%(116 flights)
  • 3–6 PM53%(77 flights)
  • 6–9 PM56%(63 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
73%
May

Jun 85% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%40
July 202592%38
August 202559%29
September 202584%25
October 202575%24
November 202583%35
December 202566%44
January 202680%50
February 202658%38
March 202666%76
April 202675%55
May 202673%52

Same trip, other airports

Keep nerding

Based on 520 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.