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Route Reliability

Houston → Chicago

HOU–MDW · 937 miles · William P. Hobby Airport to Chicago Midway International Airport

76
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
10 min
Average arrival delay
1.2%
Cancelled
1,844
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 75% of the time across 1,844 flights. No comparison to make.

What the data says

Morning-you made the right choice.

HOU–MDW flights departing between 3–6 AM arrived on time 91% of the time, versus 65% between 9 PM–12 AM.

Sunday scaries are real for this one.

HOU–MDW flights arrived on time 82% of the time on Saturdays and just 65% on Sundays. That gap is worth planning around.

Recent months have been rougher.

HOU–MDW flights arrived on time 69% of the time over the last three months in the data, compared with 81% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon73%(278 flights)
  • Tue81%(250 flights)
  • Wed78%(247 flights)
  • Thu76%(269 flights)
  • Fri74%(273 flights)
  • Sat82%(239 flights)
  • Sun65%(255 flights)
On-time by departure window
  • 3–6 AM91%(137 flights)
  • 6–9 AM88%(376 flights)
  • 9 AM–12 PM85%(207 flights)
  • 12–3 PM68%(334 flights)
  • 3–6 PM65%(207 flights)
  • 6–9 PM69%(409 flights)
  • 9 PM–12 AM65%(141 flights)
On-time trend by month
71%
May

Jun 69% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%176
July 202564%182
August 202579%164
September 202589%162
October 202581%154
November 202576%136
December 202578%144
January 202687%128
February 202679%115
March 202662%154
April 202674%147
May 202671%149

Same trip, other airports

Keep nerding

Based on 1,844 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.