STL (St. Louis) to CMH (Columbus) flights arrive on time 83% of the time. The most reliable airline on this route is Southwest Airlines at 83%. The average delay is 55 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated May 2026.STL → CMH
STL (St. Louis) to CMH (Columbus)
STL → CMH on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 83% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Accurate?
Good to know
Departing from STL
81% on timeTSA is currently ~24 min. Best time: 4 AM (about 5 min).
Arriving at CMH
82% on timeWhen flights into CMH are late, the average delay is 67 minutes. Build buffer if you have ground plans.
If connecting at CMH: TSA is ~16 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.
Let us watch your flight
We worry about delays, TSA, weather, and gates so you don't have to.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated May 2026. Source: Bureau of Transportation Statistics.