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Route Reliability

Chicago → Charleston

MDW–CHS · 745 miles · Chicago Midway International Airport to Charleston International Airport

79
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
8 min
Average arrival delay
1.7%
Cancelled
346
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 78% of the time across 346 flights. No comparison to make.

What the data says

Morning-you made the right choice.

MDW–CHS flights departing between 6–9 AM arrived on time 94% of the time, versus 70% between 9 PM–12 AM.

Mondays have been rough.

MDW–CHS flights arrived on time 85% of the time on Fridays and just 58% on Mondays. That gap is worth planning around.

Ticking up lately.

MDW–CHS flights arrived on time 82% of the time over the last three months in the data, compared with 76% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon58%(43 flights)
  • Tue76%(38 flights)
  • Wed83%(35 flights)
  • Thu73%(41 flights)
  • Fri85%(48 flights)
  • Sat84%(55 flights)
  • Sun80%(80 flights)
On-time by departure window
  • 6–9 AM94%(17 flights)
  • 9 AM–12 PM78%(27 flights)
  • 12–3 PM82%(94 flights)
  • 3–6 PM81%(58 flights)
  • 6–9 PM72%(107 flights)
  • 9 PM–12 AM70%(37 flights)
On-time trend by month
75%
May

Jun 74% → May 75% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%39
July 202565%37
August 202580%35
September 202582%34
October 202586%35
November 202580%20
December 202571%17
February 202678%18
March 202686%28
April 202684%32
May 202675%36

Same trip, other airports

Keep nerding

Based on 346 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.