BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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FLL→MDW

Fort Lauderdale, FL (FLL) to Chicago, IL (MDW) flight delay odds

69.3% of 1,128 official scheduled FLL-to-MDW flights arrived on time; 17.8% arrived at least 30 minutes late and 1.2% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
69.3%arrived on time
17.8%30+ min late
1.2%cancelled
1,128scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.4%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted1.0%did not reach as scheduled
Average arrival+12.4 mincompleted flights

Which departure time was most reliable for FLL to MDW?

Among qualifying FLL-to-MDW departure window results, Early morning had the highest on-time rate: 88.7% of 364 flights. Night was lowest at 51.8% across 56 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36488.7%5.8%1.1%
Late morning9777.3%10.3%1.0%
Afternoon36461.0%21.4%0.8%
Evening24753.8%31.2%1.6%
Night5651.8%26.8%3.6%

Which weekday was most reliable for FLL to MDW?

Among qualifying FLL-to-MDW weekday results, Wednesday had the highest on-time rate: 80.3% of 147 flights. Sunday was lowest at 60.9% across 174 flights.

DayFlightsOn time30+ minCancelled
Monday15662.8%22.4%2.6%
Tuesday15471.4%14.3%1.3%
Wednesday14780.3%9.5%0.0%
Thursday15571.6%16.1%0.0%
Friday15566.5%23.9%1.3%
Saturday18772.7%13.9%1.6%
Sunday17460.9%24.1%1.7%

Which airline was most reliable for FLL to MDW?

Only Southwest Airlines met the FLL-to-MDW airline threshold: 69.3% of 1,128 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,12869.3%17.8%1.2%

Which month was most reliable for FLL to MDW?

Among qualifying FLL-to-MDW month results, October 2025 had the highest on-time rate: 85.7% of 91 flights. March 2026 was lowest at 56.9% across 109 flights.

MonthFlightsOn time30+ minCancelled
July 20259769.1%21.6%0.0%
August 20258569.4%18.8%0.0%
September 20258181.5%8.6%1.2%
October 20259185.7%8.8%0.0%
November 20259571.6%15.8%4.2%
December 20259759.8%21.6%1.0%
January 20269869.4%15.3%1.0%
February 20269163.7%18.7%0.0%
March 202610956.9%24.8%4.6%
April 20269771.1%13.4%2.1%
May 20269766.0%22.7%0.0%
June 20269072.2%21.1%0.0%

What drove FLL to MDW delay minutes?

Late aircraft was the largest recorded FLL-to-MDW delay category, accounting for 45.0% of 17,683 BTS-attributed delay minutes during July 2025–June 2026.

Airline35.1%
Late aircraft45.0%
National airspace17.3%
Weather2.5%
Security0.1%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.