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

Chicago, IL (MDW) to Los Angeles, CA (LAX) flight delay odds

68.0% of 1,328 official scheduled MDW-to-LAX flights arrived on time; 18.4% 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 SIGNALVariable
68.0%arrived on time
18.4%30+ min late
1.0%cancelled
1,328scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.9%all scheduled flights
120+ minutes late1.9%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+11.6 mincompleted flights

Which departure time was most reliable for MDW to LAX?

Among qualifying MDW-to-LAX departure window results, Early morning had the highest on-time rate: 80.9% of 350 flights. Night was lowest at 52.1% across 240 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning35080.9%7.7%0.9%
Late morning20272.8%14.4%1.5%
Afternoon21464.0%17.8%1.4%
Evening32265.5%22.0%0.3%
Night24052.1%32.9%1.2%

Which weekday was most reliable for MDW to LAX?

Among qualifying MDW-to-LAX weekday results, Tuesday had the highest on-time rate: 75.4% of 191 flights. Friday was lowest at 63.9% across 205 flights.

DayFlightsOn time30+ minCancelled
Monday20466.2%21.6%1.5%
Tuesday19175.4%16.2%0.0%
Wednesday18473.4%12.5%0.0%
Thursday19864.6%22.7%1.5%
Friday20563.9%20.0%0.5%
Saturday16167.7%14.3%2.5%
Sunday18565.4%20.0%1.1%

Which airline was most reliable for MDW to LAX?

Only Southwest Airlines met the MDW-to-LAX airline threshold: 68.0% of 1,328 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,32868.0%18.4%1.0%

Which month was most reliable for MDW to LAX?

Among qualifying MDW-to-LAX month results, September 2025 had the highest on-time rate: 75.9% of 116 flights. June 2026 was lowest at 51.8% across 110 flights.

MonthFlightsOn time30+ minCancelled
July 202514667.1%21.9%0.7%
August 202512175.2%15.7%0.0%
September 202511675.9%9.5%0.0%
October 202511972.3%14.3%0.0%
November 202510672.6%12.3%4.7%
December 202511565.2%24.3%0.0%
January 20269772.2%13.4%1.0%
February 20268467.9%17.9%0.0%
March 202610566.7%21.0%3.8%
April 202610363.1%18.4%1.9%
May 202610665.1%20.8%0.0%
June 202611051.8%30.0%0.0%

What drove MDW to LAX delay minutes?

Late aircraft was the largest recorded MDW-to-LAX delay category, accounting for 42.1% of 20,302 BTS-attributed delay minutes during July 2025–June 2026.

Airline38.8%
Late aircraft42.1%
National airspace16.4%
Weather2.1%
Security0.7%
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.