STL (St. Louis) to EWR (Newark) flights arrive on time 81% of the time. The most reliable airline on this route is Republic Airways at 84%. The average delay is 86 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated October 2026.STL → EWR
STL (St. Louis) to EWR (Newark)
STL → EWR 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 air traffic and busy airspace.
Accurate?
Republic Airways edges out United Airlines on this route — 84% vs 74% on time.
Airline Comparison
Republic Airways leads at 84% on time; United Airlines trails at 74%.
Accurate?
Good to know
Departing from STL
80% on timeTSA is currently ~30 min. Best time: 4 AM (about 5 min).
Arriving at EWR
78% on timeWhen flights into EWR are late, the average delay is 79 minutes. Build buffer if you have ground plans.
If connecting at EWR: TSA is ~36 min right now. Allow at least 60 minutes for a domestic connection.
EWR has a 2.8% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
Check what Republic Airways 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.