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

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

87.7% of 530 official scheduled JAX-to-STL flights arrived on time; 7.4% arrived at least 30 minutes late and 0.4% 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 SIGNALLower disruption
87.7%arrived on time
7.4%30+ min late
0.4%cancelled
530scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.0%all scheduled flights
120+ minutes late2.1%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival-1.1 mincompleted flights

Which departure time was most reliable for JAX to STL?

Among qualifying JAX-to-STL departure window results, Early morning had the highest on-time rate: 96.6% of 268 flights. Afternoon was lowest at 75.5% across 49 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning26896.6%2.2%0.7%
Afternoon4975.5%10.2%0.0%
Evening18776.5%15.0%0.0%

Which weekday was most reliable for JAX to STL?

Among qualifying JAX-to-STL weekday results, Saturday had the highest on-time rate: 91.9% of 74 flights. Sunday was lowest at 80.7% across 88 flights.

DayFlightsOn time30+ minCancelled
Monday7685.5%5.3%1.3%
Tuesday7290.3%8.3%1.4%
Wednesday7091.4%7.1%0.0%
Thursday7588.0%5.3%0.0%
Friday7588.0%6.7%0.0%
Saturday7491.9%6.8%0.0%
Sunday8880.7%11.4%0.0%

Which airline was most reliable for JAX to STL?

Only Southwest Airlines met the JAX-to-STL airline threshold: 87.7% of 530 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines53087.7%7.4%0.4%

Which month was most reliable for JAX to STL?

Among qualifying JAX-to-STL month results, February 2026 had the highest on-time rate: 100.0% of 19 flights. June 2026 was lowest at 76.3% across 38 flights.

MonthFlightsOn time30+ minCancelled
July 20256277.4%19.4%0.0%
August 20255782.5%12.3%0.0%
September 20255694.6%1.8%0.0%
October 20255791.2%1.8%0.0%
November 20255494.4%5.6%0.0%
December 20255887.9%3.4%0.0%
January 20261888.9%11.1%0.0%
February 202619100.0%0.0%0.0%
March 20263384.8%6.1%6.1%
April 20263789.2%5.4%0.0%
May 20264192.7%4.9%0.0%
June 20263876.3%13.2%0.0%

What drove JAX to STL delay minutes?

Late aircraft was the largest recorded JAX-to-STL delay category, accounting for 58.2% of 4,228 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.5%
Late aircraft58.2%
National airspace12.1%
Weather1.7%
Security0.6%
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.