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Route Reliability

St. Louis → Columbus

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

89
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
3 min
Average arrival delay
0.3%
Cancelled
674
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 674 flights. No comparison to make.

What the data says

Morning flights do better here.

STL–CMH flights departing between 6–9 AM arrived on time 94% of the time, versus 62% between 3–6 PM.

Monday is the weak spot.

STL–CMH flights arrived on time 89% of the time on Wednesdays. On Mondays: 78%.

It basically never cancels.

Out of 674 scheduled flights, only 0.3% were cancelled.

Slipping a little lately.

STL–CMH flights arrived on time 80% 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
  • Mon78%(102 flights)
  • Tue85%(104 flights)
  • Wed89%(104 flights)
  • Thu82%(102 flights)
  • Fri86%(103 flights)
  • Sat89%(52 flights)
  • Sun79%(102 flights)
On-time by departure window
  • 6–9 AM94%(248 flights)
  • 9 AM–12 PM92%(85 flights)
  • 12–3 PM—(9 flights)
  • 3–6 PM62%(34 flights)
  • 6–9 PM77%(281 flights)
  • 9 PM–12 AM67%(12 flights)
On-time trend by month
80%
May

Jun 75% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%56
July 202580%56
August 202588%56
September 202596%56
October 202593%58
November 202582%54
December 202579%58
January 202691%55
February 202682%50
March 202676%58
April 202684%56
May 202680%56

Keep nerding

Based on 674 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.