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

Fort Lauderdale, FL (FLL) to St. Louis, MO (STL) flight delay odds

77.3% of 843 official scheduled FLL-to-STL flights arrived on time; 13.0% arrived at least 30 minutes late and 0.5% 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
77.3%arrived on time
13.0%30+ min late
0.5%cancelled
843scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.2%all scheduled flights
120+ minutes late2.1%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+5.3 mincompleted flights

Which departure time was most reliable for FLL to STL?

Among qualifying FLL-to-STL departure window results, Early morning had the highest on-time rate: 94.9% of 374 flights. Evening was lowest at 55.8% across 208 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning37494.9%2.7%0.3%
Late morning10082.0%11.0%0.0%
Afternoon15661.5%19.2%1.9%
Evening20855.8%28.4%0.0%

Which weekday was most reliable for FLL to STL?

Among qualifying FLL-to-STL weekday results, Tuesday had the highest on-time rate: 91.4% of 93 flights. Friday was lowest at 68.7% across 99 flights.

DayFlightsOn time30+ minCancelled
Monday10374.8%12.6%1.0%
Tuesday9391.4%7.5%1.1%
Wednesday8285.4%3.7%0.0%
Thursday12277.9%12.3%0.0%
Friday9968.7%18.2%0.0%
Saturday17479.3%12.1%0.0%
Sunday17070.0%19.4%1.2%

Which airline was most reliable for FLL to STL?

Among qualifying FLL-to-STL airline results, Southwest Airlines had the highest on-time rate: 77.9% of 766 flights. Spirit Airlines was lowest at 72.6% across 73 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines76677.9%12.4%0.4%
Spirit Airlines7372.6%17.8%1.4%
Frontier Airlines450.0%50.0%0.0%

Which month was most reliable for FLL to STL?

Among qualifying FLL-to-STL month results, September 2025 had the highest on-time rate: 97.8% of 46 flights. February 2026 was lowest at 68.8% across 80 flights.

MonthFlightsOn time30+ minCancelled
July 20258483.3%13.1%0.0%
August 20255877.6%12.1%0.0%
September 20254697.8%2.2%0.0%
October 20255583.6%7.3%0.0%
November 20258278.0%12.2%1.2%
December 20258272.0%19.5%0.0%
January 20267779.2%6.5%0.0%
February 20268068.8%16.2%0.0%
March 20268471.4%15.5%3.6%
April 20266280.6%12.9%0.0%
May 20266773.1%16.4%0.0%
June 20266672.7%16.7%0.0%

What drove FLL to STL delay minutes?

Late aircraft was the largest recorded FLL-to-STL delay category, accounting for 41.2% of 10,319 BTS-attributed delay minutes during July 2025–June 2026.

Airline39.7%
Late aircraft41.2%
National airspace16.4%
Weather2.5%
Security0.2%
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.