LAX (Los Angeles) to STL (St. Louis) flights arrive on time 81% of the time. The most reliable airline on this route is Southwest Airlines at 82%. The average delay is 57 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated August 2026.LAX → STL
LAX (Los Angeles) to STL (St. Louis)
LAX → STL on-time performance by month
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This route is on time most of the time. About 81% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Airlines are roughly equal on this route — Southwest Airlines leads slightly at 82% vs American Airlines at 79%.
Airline Comparison
Southwest Airlines leads at 82% on time; American Airlines trails at 79%.
Accurate?
Good to know
Departing from LAX
82% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. LAX has long runway queues.
TSA is currently ~35 min. Best time: 4 AM (about 5 min).
Arriving at STL
81% on timeWhen flights into STL are late, the average delay is 66 minutes. Build buffer if you have ground plans.
If connecting at STL: TSA is ~22 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 LAX? 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 August 2026. Source: Bureau of Transportation Statistics.