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

Chicago, IL (MDW) to Atlanta, GA (ATL) flight delay odds

78.2% of 3,528 official scheduled MDW-to-ATL flights arrived on time; 12.9% arrived at least 30 minutes late and 1.8% 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
78.2%arrived on time
12.9%30+ min late
1.8%cancelled
3,528scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.2%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+3.4 mincompleted flights

Which departure time was most reliable for MDW to ATL?

Among qualifying MDW-to-ATL departure window results, Late morning had the highest on-time rate: 84.8% of 685 flights. Evening was lowest at 70.9% across 725 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,05681.1%9.7%2.1%
Late morning68584.8%9.5%1.6%
Afternoon1,04876.2%13.7%2.1%
Evening72570.9%19.0%1.4%

Which weekday was most reliable for MDW to ATL?

Among qualifying MDW-to-ATL weekday results, Wednesday had the highest on-time rate: 83.8% of 495 flights. Sunday was lowest at 72.3% across 530 flights.

DayFlightsOn time30+ minCancelled
Monday53274.8%15.4%2.8%
Tuesday50583.4%10.1%0.8%
Wednesday49583.8%8.9%0.6%
Thursday53479.8%11.6%0.4%
Friday53577.0%13.1%1.7%
Saturday39776.3%14.1%3.8%
Sunday53072.3%16.8%3.2%

Which airline was most reliable for MDW to ATL?

Among qualifying MDW-to-ATL airline results, Delta Air Lines had the highest on-time rate: 84.4% of 1,383 flights. Frontier Airlines was lowest at 70.5% across 599 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,54675.6%14.2%1.3%
Delta Air Lines1,38384.4%9.4%2.5%
Frontier Airlines59970.5%17.4%1.7%

Which month was most reliable for MDW to ATL?

Among qualifying MDW-to-ATL month results, September 2025 had the highest on-time rate: 87.7% of 292 flights. July 2025 was lowest at 69.4% across 324 flights.

MonthFlightsOn time30+ minCancelled
July 202532469.4%21.3%1.5%
August 202530579.7%12.8%1.3%
September 202529287.7%7.2%0.0%
October 202530487.5%8.9%0.0%
November 202528878.1%10.1%4.2%
December 202529075.5%14.8%3.1%
January 202627978.1%10.8%4.3%
February 202626079.2%11.2%0.8%
March 202628972.0%18.0%4.2%
April 202629183.8%9.3%1.0%
May 202629875.2%14.1%0.3%
June 202630872.7%14.9%1.6%

What drove MDW to ATL delay minutes?

Airline was the largest recorded MDW-to-ATL delay category, accounting for 41.3% of 45,269 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.3%
Late aircraft33.0%
National airspace21.3%
Weather3.6%
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.