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

New York, NY (LGA) to Chicago, IL (MDW) flight delay odds

68.8% of 2,378 official scheduled LGA-to-MDW flights arrived on time; 17.1% arrived at least 30 minutes late and 4.6% 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 SIGNALHigher disruption
68.8%arrived on time
17.1%30+ min late
4.6%cancelled
2,378scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.0%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+12.0 mincompleted flights

Which departure time was most reliable for LGA to MDW?

Among qualifying LGA-to-MDW departure window results, Early morning had the highest on-time rate: 83.5% of 448 flights. Night was lowest at 51.5% across 295 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning44883.5%7.1%2.5%
Late morning58276.3%11.3%2.9%
Afternoon68366.9%18.7%4.5%
Evening37056.2%26.2%6.8%
Night29551.5%28.1%8.8%

Which weekday was most reliable for LGA to MDW?

Among qualifying LGA-to-MDW weekday results, Wednesday had the highest on-time rate: 73.3% of 363 flights. Sunday was lowest at 62.6% across 334 flights.

DayFlightsOn time30+ minCancelled
Monday36162.9%19.7%8.6%
Tuesday36872.6%15.2%3.5%
Wednesday36373.3%13.5%3.3%
Thursday36166.8%19.1%5.0%
Friday35971.9%15.9%2.8%
Saturday23272.0%13.4%2.6%
Sunday33462.6%21.9%6.0%

Which airline was most reliable for LGA to MDW?

Only Southwest Airlines met the LGA-to-MDW airline threshold: 68.8% of 2,378 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines2,37868.8%17.1%4.6%

Which month was most reliable for LGA to MDW?

Among qualifying LGA-to-MDW month results, September 2025 had the highest on-time rate: 86.4% of 198 flights. December 2025 was lowest at 55.1% across 198 flights.

MonthFlightsOn time30+ minCancelled
July 202520459.8%22.5%9.3%
August 202520280.7%10.9%1.0%
September 202519886.4%7.6%0.5%
October 202520459.3%24.0%2.5%
November 202519165.4%19.4%6.8%
December 202519855.1%26.3%2.0%
January 202619785.3%5.6%4.1%
February 202618376.0%10.4%7.7%
March 202619757.9%22.3%12.7%
April 202619676.0%11.7%0.5%
May 202620263.9%21.8%4.5%
June 202620660.7%21.4%4.4%

What drove LGA to MDW delay minutes?

Late aircraft was the largest recorded LGA-to-MDW delay category, accounting for 46.7% of 40,805 BTS-attributed delay minutes during July 2025–June 2026.

Airline21.6%
Late aircraft46.7%
National airspace24.5%
Weather7.0%
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.