BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
STL→JAX

St. Louis, MO (STL) to Jacksonville, FL (JAX) flight delay odds

79.2% of 530 official scheduled STL-to-JAX flights arrived on time; 12.6% arrived at least 30 minutes late and 0.2% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
79.2%arrived on time
12.6%30+ min late
0.2%cancelled
530scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.1%all scheduled flights
120+ minutes late2.5%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+6.3 mincompleted flights

Which departure time was most reliable for STL to JAX?

Among qualifying STL-to-JAX departure window results, Early morning had the highest on-time rate: 90.6% of 170 flights. Evening was lowest at 69.7% across 221 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning17090.6%4.1%0.0%
Late morning7288.9%9.7%0.0%
Afternoon5076.0%14.0%0.0%
Evening22169.7%19.0%0.5%

Which weekday was most reliable for STL to JAX?

Among qualifying STL-to-JAX weekday results, Tuesday had the highest on-time rate: 86.1% of 72 flights. Monday was lowest at 72.4% across 76 flights.

DayFlightsOn time30+ minCancelled
Monday7672.4%14.5%1.3%
Tuesday7286.1%8.3%0.0%
Wednesday7082.9%10.0%0.0%
Thursday7578.7%13.3%0.0%
Friday7585.3%8.0%0.0%
Saturday7473.0%21.6%0.0%
Sunday8877.3%12.5%0.0%

Which airline was most reliable for STL to JAX?

Only Southwest Airlines met the STL-to-JAX airline threshold: 79.2% of 530 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines53079.2%12.6%0.2%

Which month was most reliable for STL to JAX?

Among qualifying STL-to-JAX month results, February 2026 had the highest on-time rate: 89.5% of 19 flights. January 2026 was lowest at 66.7% across 18 flights.

MonthFlightsOn time30+ minCancelled
July 20256274.2%16.1%0.0%
August 20255782.5%12.3%0.0%
September 20255680.4%7.1%0.0%
October 20255775.4%14.0%0.0%
November 20255487.0%11.1%0.0%
December 20255882.8%8.6%0.0%
January 20261866.7%16.7%0.0%
February 20261989.5%5.3%0.0%
March 20263369.7%27.3%3.0%
April 20263778.4%10.8%0.0%
May 20264175.6%14.6%0.0%
June 20263884.2%10.5%0.0%

What drove STL to JAX delay minutes?

Late aircraft was the largest recorded STL-to-JAX delay category, accounting for 57.5% of 6,019 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.8%
Late aircraft57.5%
National airspace9.8%
Weather0.7%
Security1.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.