BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
JAX→MDW

Jacksonville, FL (JAX) to Chicago, IL (MDW) flight delay odds

77.6% of 397 official scheduled JAX-to-MDW flights arrived on time; 13.9% arrived at least 30 minutes late and 1.0% 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 SIGNALGenerally reliable
77.6%arrived on time
13.9%30+ min late
1.0%cancelled
397scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.0%all scheduled flights
120+ minutes late2.3%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+7.3 mincompleted flights

Which departure time was most reliable for JAX to MDW?

Among qualifying JAX-to-MDW departure window results, Early morning had the highest on-time rate: 88.5% of 104 flights. Evening was lowest at 69.0% across 197 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning10488.5%3.8%1.9%
Afternoon8783.9%12.6%0.0%
Evening19769.0%19.3%1.0%

Which weekday was most reliable for JAX to MDW?

Among qualifying JAX-to-MDW weekday results, Saturday had the highest on-time rate: 84.2% of 57 flights. Sunday was lowest at 70.5% across 61 flights.

DayFlightsOn time30+ minCancelled
Monday5680.4%14.3%0.0%
Tuesday5777.2%7.0%1.8%
Wednesday5576.4%18.2%0.0%
Thursday5572.7%14.5%3.6%
Friday5682.1%8.9%0.0%
Saturday5784.2%14.0%1.8%
Sunday6170.5%19.7%0.0%

Which airline was most reliable for JAX to MDW?

Only Southwest Airlines met the JAX-to-MDW airline threshold: 77.6% of 397 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines39777.6%13.9%1.0%

Which month was most reliable for JAX to MDW?

Among qualifying JAX-to-MDW month results, May 2026 had the highest on-time rate: 96.8% of 31 flights. July 2025 was lowest at 66.7% across 39 flights.

MonthFlightsOn time30+ minCancelled
July 20253966.7%28.2%0.0%
August 20253284.4%9.4%0.0%
September 20253083.3%10.0%0.0%
October 20253171.0%25.8%0.0%
November 20253080.0%10.0%0.0%
December 20253167.7%16.1%0.0%
January 20262785.2%14.8%0.0%
February 20262774.1%3.7%0.0%
March 20263568.6%14.3%8.6%
April 20263183.9%6.5%0.0%
May 20263196.8%0.0%0.0%
June 20265375.5%18.9%1.9%

What drove JAX to MDW delay minutes?

Late aircraft was the largest recorded JAX-to-MDW delay category, accounting for 62.0% of 4,788 BTS-attributed delay minutes during July 2025–June 2026.

Airline19.9%
Late aircraft62.0%
National airspace14.6%
Weather3.5%
Security0.0%
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.