IAD (Washington) to CHS (Charleston) flights arrive on time 89% of the time. The most reliable airline on this route is United Airlines at 90%. The average delay is 70 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated October 2026.IAD → CHS
IAD (Washington) to CHS (Charleston)
IAD → CHS on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is usually on time. About 89% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Airlines are roughly equal on this route — United Airlines leads slightly at 90% vs Republic Airways at 88%.
Airline Comparison
United Airlines leads at 90% on time; Republic Airways trails at 88%.
Accurate?
Good to know
Departing from IAD
82% on timeExpect ~20 min sitting on the taxiway after your gate pushes back. IAD has long runway queues.
TSA is currently ~12 min. Best time: 4 AM (about 5 min).
Arriving at CHS
80% on timeWhen flights into CHS are late, the average delay is 75 minutes. Build buffer if you have ground plans.
If connecting at CHS: TSA is ~30 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what United Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of IAD? 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.