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Route Reliability

Columbus → St. Louis

CMH–STL · 409 miles · John Glenn Columbus International Airport to St. Louis Lambert International Airport

89
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
2 min
Average arrival delay
0.7%
Cancelled
672
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 84% of the time across 672 flights. No comparison to make.

What the data says

Morning flights do better here.

CMH–STL flights departing between 6–9 AM arrived on time 96% of the time, versus 66% between 9 PM–12 AM.

Saturday is the weak spot.

CMH–STL flights arrived on time 90% of the time on Wednesdays. On Saturdays: 79%.

Slipping a little lately.

CMH–STL flights arrived on time 81% of the time over the last three months in the data, compared with 84% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon82%(104 flights)
  • Tue89%(104 flights)
  • Wed90%(102 flights)
  • Thu81%(102 flights)
  • Fri85%(102 flights)
  • Sat79%(52 flights)
  • Sun80%(101 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM96%(274 flights)
  • 9 AM–12 PM92%(64 flights)
  • 12–3 PM73%(11 flights)
  • 3–6 PM71%(14 flights)
  • 6–9 PM75%(232 flights)
  • 9 PM–12 AM66%(71 flights)
On-time trend by month
82%
May

Jun 80% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%56
July 202575%57
August 202591%55
September 202595%55
October 202590%57
November 202585%54
December 202583%57
January 202689%54
February 202681%52
March 202674%58
April 202686%56
May 202682%56

Keep nerding

Based on 672 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.