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Route Reliability

Chicago → Miami

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

76
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
10 min
Average arrival delay
1.2%
Cancelled
520
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines75% on time · 456 flights
  • Frontier Airlines75% 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.

MDW–MIA flights departing between 9 AM–12 PM arrived on time 88% of the time, versus 65% between 6–9 PM.

Sunday scaries are real for this one.

MDW–MIA flights arrived on time 93% of the time on Tuesdays and just 69% on Sundays. That gap is worth planning around.

Ticking up lately.

MDW–MIA flights arrived on time 76% of the time over the last three months in the data, compared with 72% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon75%(76 flights)
  • Tue93%(40 flights)
  • Wed86%(44 flights)
  • Thu70%(74 flights)
  • Fri80%(73 flights)
  • Sat71%(111 flights)
  • Sun69%(93 flights)
On-time by departure window
  • 6–9 AM76%(218 flights)
  • 9 AM–12 PM88%(92 flights)
  • 12–3 PM69%(61 flights)
  • 3–6 PM74%(54 flights)
  • 6–9 PM65%(85 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
79%
May

Jun 78% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%40
July 202574%39
August 202564%28
September 202583%24
October 202596%24
November 202583%36
December 202566%44
January 202665%51
February 202684%38
March 202670%77
April 202677%57
May 202679%53

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.