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

Dallas, TX (DAL) to Chicago, IL (MDW) flight delay odds

68.9% of 2,154 official scheduled DAL-to-MDW flights arrived on time; 18.6% arrived at least 30 minutes late and 1.9% 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
68.9%arrived on time
18.6%30+ min late
1.9%cancelled
2,154scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.8%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+13.5 mincompleted flights

Which departure time was most reliable for DAL to MDW?

Among qualifying DAL-to-MDW departure window results, Early morning had the highest on-time rate: 89.4% of 482 flights. Evening was lowest at 52.9% across 488 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning48289.4%5.0%1.5%
Late morning37675.5%9.8%1.9%
Afternoon62465.1%19.6%2.1%
Evening48852.9%33.0%2.0%
Night18457.6%30.4%2.2%

Which weekday was most reliable for DAL to MDW?

Among qualifying DAL-to-MDW weekday results, Tuesday had the highest on-time rate: 76.8% of 315 flights. Sunday was lowest at 63.6% across 319 flights.

DayFlightsOn time30+ minCancelled
Monday32966.9%20.1%1.5%
Tuesday31576.8%14.6%1.6%
Wednesday30675.5%14.7%0.3%
Thursday32364.7%19.2%0.9%
Friday32666.9%21.8%3.1%
Saturday23668.6%16.5%3.4%
Sunday31963.6%22.3%2.8%

Which airline was most reliable for DAL to MDW?

Only Southwest Airlines met the DAL-to-MDW airline threshold: 68.9% of 2,154 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,15468.9%18.6%1.9%

Which month was most reliable for DAL to MDW?

Among qualifying DAL-to-MDW month results, February 2026 had the highest on-time rate: 80.3% of 137 flights. June 2026 was lowest at 54.4% across 195 flights.

MonthFlightsOn time30+ minCancelled
July 202520263.4%24.3%2.0%
August 202519271.4%19.3%0.0%
September 202519077.4%13.2%0.0%
October 202519579.0%13.3%0.5%
November 202517768.9%14.7%5.6%
December 202519172.3%15.7%0.5%
January 202615673.1%12.8%4.5%
February 202613780.3%8.8%0.7%
March 202617160.2%24.0%1.8%
April 202617268.0%18.0%1.7%
May 202617661.9%21.0%3.4%
June 202619554.4%33.8%2.6%

What drove DAL to MDW delay minutes?

Late aircraft was the largest recorded DAL-to-MDW delay category, accounting for 50.4% of 34,563 BTS-attributed delay minutes during July 2025–June 2026.

Airline29.5%
Late aircraft50.4%
National airspace15.6%
Weather4.2%
Security0.3%
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.