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Route Reliability

Fort Myers → St. Louis

RSW–STL · 979 miles · Southwest Florida International Airport to St. Louis Lambert International Airport

87
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
4 min
Average arrival delay
0.8%
Cancelled
1,008
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 1,008 flights. No comparison to make.

What the data says

Morning flights do better here.

RSW–STL flights departing between 3–6 AM arrived on time 100% of the time, versus 64% between 9 PM–12 AM.

Monday is the weak spot.

RSW–STL flights arrived on time 88% of the time on Fridays. On Mondays: 80%.

Trending in the right direction.

RSW–STL flights arrived on time 85% of the time over the last three months in the data, compared with 77% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon80%(148 flights)
  • Tue83%(132 flights)
  • Wed85%(129 flights)
  • Thu82%(142 flights)
  • Fri88%(146 flights)
  • Sat80%(143 flights)
  • Sun81%(159 flights)
On-time by departure window
  • 3–6 AM100%(39 flights)
  • 6–9 AM95%(343 flights)
  • 9 AM–12 PM87%(93 flights)
  • 12–3 PM80%(142 flights)
  • 3–6 PM69%(105 flights)
  • 6–9 PM70%(266 flights)
  • 9 PM–12 AM64%(11 flights)
On-time trend by month
88%
May

Jun 78% → May 88% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%68
July 202580%61
August 202586%65
September 202592%60
October 202587%87
November 202586%83
December 202571%86
January 202686%92
February 202675%93
March 202682%128
April 202684%91
May 202688%85

Keep nerding

Based on 1,008 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.