GSP (Greenville) to ORD (Chicago) flights arrive on time 80% of the time. The most reliable airline on this route is United Airlines at 90%. The average delay is 69 minutes. Delays on this route are most often caused by air traffic and busy airspace.
Source: Bureau of Transportation Statistics. Updated May 2026.GSP → ORD
GSP (Greenville) to ORD (Chicago)
GSP → ORD on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 80% of flights arrive on schedule.
Delays on this route are most often caused by air traffic and busy airspace.
Accurate?
United Airlines edges out null on this route — 90% vs 78% on time.
Airline Comparison
United Airlines leads at 90% on time; trails at 78%.
Accurate?
Good to know
Departing from GSP
83% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. GSP has long runway queues.
TSA is currently ~19 min. Best time: 4 AM (about 5 min).
Arriving at ORD
80% on timeWhen flights into ORD are late, the average delay is 76 minutes. Build buffer if you have ground plans.
If connecting at ORD: TSA is ~34 min right now. Allow at least 60 minutes for a domestic connection.
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Data last updated May 2026. Source: Bureau of Transportation Statistics.