CMH (Columbus) to IAD (Washington) flights arrive on time 86% of the time. The most reliable airline on this route is Republic Airways at 88%. The average delay is 63 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated August 2026.CMH → IAD
CMH (Columbus) to IAD (Washington)
CMH → IAD on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is usually on time. About 86% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Republic Airways edges out United Airlines on this route — 88% vs 83% on time.
Airline Comparison
Republic Airways leads at 88% on time; United Airlines trails at 83%.
Accurate?
Good to know
Departing from CMH
80% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. CMH has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at IAD
82% on timeWhen flights into IAD are late, the average delay is 75 minutes. Build buffer if you have ground plans.
If connecting at IAD: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Republic Airways owes you — refund rights, action plan, complaint email. Free.
Flying out of CMH? 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.