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Route Reliability

St. Louis → Cleveland

STL–CLE · 487 miles · St. Louis Lambert International Airport to Cleveland Hopkins International Airport

88
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
5 min
Average arrival delay
0.3%
Cancelled
705
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 83% of the time across 705 flights. No comparison to make.

What the data says

Morning flights do better here.

STL–CLE flights departing between 6–9 AM arrived on time 94% of the time, versus 70% between 6–9 PM.

Monday is the weak spot.

STL–CLE flights arrived on time 90% of the time on Tuesdays. On Mondays: 79%.

It basically never cancels.

Out of 705 scheduled flights, only 0.3% were cancelled.

Recent months have been rougher.

STL–CLE flights arrived on time 76% of the time over the last three months in the data, compared with 91% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(111 flights)
  • Tue90%(104 flights)
  • Wed87%(103 flights)
  • Thu82%(109 flights)
  • Fri84%(108 flights)
  • Sat80%(61 flights)
  • Sun80%(103 flights)
On-time by departure window
  • 6–9 AM94%(233 flights)
  • 9 AM–12 PM94%(80 flights)
  • 12–3 PM91%(54 flights)
  • 3–6 PM89%(35 flights)
  • 6–9 PM70%(297 flights)
On-time trend by month
68%
May

Jun 75% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%60
July 202577%61
August 202588%68
September 202590%69
October 202579%58
November 202591%53
December 202588%57
January 202693%53
February 202694%50
March 202683%58
April 202677%56
May 202668%56

Keep nerding

Based on 705 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.