STL (St. Louis) to PBI (West Palm Beach) flights arrive on time 51% of the time. The most reliable airline on this route is Southwest Airlines at 50%. The average delay is 70 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated October 2026.STL → PBI
STL (St. Louis) to PBI (West Palm Beach)
STL → PBI on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is frequently delayed. About 51% of flights arrive on schedule.
Delays on this route are most often caused by air traffic and busy airspace.
Accurate?
Accurate?
Good to know
Departing from STL
80% on timeTSA is currently ~30 min. Best time: 4 AM (about 5 min).
Arriving at PBI
75% on timeWhen flights into PBI are late, the average delay is 77 minutes. Build buffer if you have ground plans.
If connecting at PBI: TSA is ~25 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.