STL (St. Louis) to FLL (Fort Lauderdale) flights arrive on time 77% of the time. The most reliable airline on this route is Southwest Airlines at 78%. The average delay is 56 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated October 2026.STL → FLL
STL (St. Louis) to FLL (Fort Lauderdale)
STL → FLL on-time performance by month
24
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JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is on time most of the time. About 77% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Southwest Airlines edges out Spirit Airlines on this route — 78% vs 69% on time.
Airline Comparison
Southwest Airlines leads at 78% on time; Spirit Airlines trails at 69%.
Accurate?
Good to know
Departing from STL
80% on timeTSA is currently ~30 min. Best time: 4 AM (about 5 min).
Arriving at FLL
73% on timeWhen flights into FLL are late, the average delay is 73 minutes. Build buffer if you have ground plans.
If connecting at FLL: TSA is ~29 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Southwest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of STL? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated October 2026. Source: Bureau of Transportation Statistics.