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

Charleston, SC (CHS) to Chicago, IL (MDW) flight delay odds

81.2% of 357 official scheduled CHS-to-MDW flights arrived on time; 10.1% arrived at least 30 minutes late and 0.3% 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 SIGNALLower disruption
81.2%arrived on time
10.1%30+ min late
0.3%cancelled
357scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.6%all scheduled flights
120+ minutes late2.5%all scheduled flights
Diverted0.8%did not reach as scheduled
Average arrival+3.0 mincompleted flights

Which departure time was most reliable for CHS to MDW?

Among qualifying CHS-to-MDW departure window results, Early morning had the highest on-time rate: 92.2% of 217 flights. Evening was lowest at 62.9% across 124 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning21792.2%3.2%0.5%
Evening12462.9%21.0%0.0%

Which weekday was most reliable for CHS to MDW?

Among qualifying CHS-to-MDW weekday results, Wednesday had the highest on-time rate: 94.3% of 35 flights. Sunday was lowest at 70.9% across 79 flights.

DayFlightsOn time30+ minCancelled
Monday4987.8%6.1%0.0%
Tuesday3984.6%2.6%0.0%
Wednesday3594.3%5.7%0.0%
Thursday4776.6%12.8%0.0%
Friday5280.8%15.4%0.0%
Saturday5683.9%7.1%0.0%
Sunday7970.9%15.2%1.3%

Which airline was most reliable for CHS to MDW?

Only Southwest Airlines met the CHS-to-MDW airline threshold: 81.2% of 357 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines35781.2%10.1%0.3%

Which month was most reliable for CHS to MDW?

Among qualifying CHS-to-MDW month results, August 2025 had the highest on-time rate: 94.4% of 36 flights. November 2025 was lowest at 52.4% across 21 flights.

MonthFlightsOn time30+ minCancelled
July 20253987.2%10.3%0.0%
August 20253694.4%2.8%0.0%
September 20253494.1%2.9%0.0%
October 20253582.9%8.6%0.0%
November 20252152.4%33.3%0.0%
December 20251770.6%0.0%0.0%
February 20261888.9%5.6%5.6%
March 20262955.2%31.0%0.0%
April 20263384.8%3.0%0.0%
May 20263688.9%5.6%0.0%
June 20265074.0%14.0%0.0%

What drove CHS to MDW delay minutes?

Late aircraft was the largest recorded CHS-to-MDW delay category, accounting for 56.3% of 3,690 BTS-attributed delay minutes during July 2025–June 2026.

Airline25.0%
Late aircraft56.3%
National airspace18.6%
Weather0.0%
Security0.0%
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.