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

New Orleans, LA (MSY) to Chicago, IL (MDW) flight delay odds

75.7% of 1,018 official scheduled MSY-to-MDW flights arrived on time; 12.8% arrived at least 30 minutes late and 1.1% 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
75.7%arrived on time
12.8%30+ min late
1.1%cancelled
1,018scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.1%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+8.6 mincompleted flights

Which departure time was most reliable for MSY to MDW?

Among qualifying MSY-to-MDW departure window results, Early morning had the highest on-time rate: 91.6% of 368 flights. Evening was lowest at 51.1% across 223 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36891.6%3.5%1.1%
Late morning13281.1%7.6%1.5%
Afternoon28772.5%12.5%0.7%
Evening22351.1%30.5%1.3%

Which weekday was most reliable for MSY to MDW?

Among qualifying MSY-to-MDW weekday results, Tuesday had the highest on-time rate: 85.2% of 135 flights. Friday was lowest at 68.7% across 150 flights.

DayFlightsOn time30+ minCancelled
Monday14671.2%14.4%2.1%
Tuesday13585.2%8.1%0.7%
Wednesday13083.1%4.6%0.8%
Thursday14372.7%14.7%0.7%
Friday15068.7%17.3%1.3%
Saturday13080.8%11.5%1.5%
Sunday18471.7%16.3%0.5%

Which airline was most reliable for MSY to MDW?

Only Southwest Airlines met the MSY-to-MDW airline threshold: 75.7% of 1,018 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,01875.7%12.8%1.1%

Which month was most reliable for MSY to MDW?

Among qualifying MSY-to-MDW month results, February 2026 had the highest on-time rate: 92.6% of 68 flights. March 2026 was lowest at 55.3% across 94 flights.

MonthFlightsOn time30+ minCancelled
July 20259778.4%11.3%0.0%
August 20258582.4%9.4%1.2%
September 20258185.2%6.2%0.0%
October 20259785.6%6.2%0.0%
November 20257977.2%8.9%3.8%
December 20257975.9%15.2%0.0%
January 20266581.5%4.6%0.0%
February 20266892.6%1.5%0.0%
March 20269455.3%21.3%5.3%
April 20269171.4%17.6%1.1%
May 20269262.0%20.7%0.0%
June 20269068.9%24.4%1.1%

What drove MSY to MDW delay minutes?

Late aircraft was the largest recorded MSY-to-MDW delay category, accounting for 56.7% of 12,177 BTS-attributed delay minutes during July 2025–June 2026.

Airline24.6%
Late aircraft56.7%
National airspace12.0%
Weather5.9%
Security0.8%
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.