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Route Reliability

Jacksonville → St. Louis

JAX–STL · 753 miles · Jacksonville International Airport to St. Louis Lambert International Airport

94
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
0 min
Average arrival delay
0.4%
Cancelled
552
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 89% of the time across 552 flights. No comparison to make.

What the data says

Morning-you made the right choice.

JAX–STL flights departing between 9 AM–12 PM arrived on time 100% of the time, versus 76% between 6–9 PM.

Sunday scaries are real for this one.

JAX–STL flights arrived on time 93% of the time on Saturdays. On Sundays: 80%.

Flights on this route

The breakdown

On-time by weekday
  • Mon90%(79 flights)
  • Tue92%(74 flights)
  • Wed89%(74 flights)
  • Thu90%(79 flights)
  • Fri87%(79 flights)
  • Sat93%(74 flights)
  • Sun80%(90 flights)
On-time by departure window
  • 3–6 AM—(6 flights)
  • 6–9 AM97%(273 flights)
  • 9 AM–12 PM100%(26 flights)
  • 12–3 PM—(9 flights)
  • 3–6 PM87%(31 flights)
  • 6–9 PM76%(204 flights)
On-time trend by month
93%
May

Jun 80% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%60
July 202577%62
August 202583%57
September 202595%56
October 202593%57
November 202594%54
December 202588%58
January 202689%18
February 2026100%19
March 202694%31
April 202692%36
May 202693%41

Keep nerding

Based on 552 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.