DEN (Denver) to GSP (Greenville) flights arrive on time 86% of the time. The most reliable airline on this route is United Airlines at 88%. The average delay is 42 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.DEN → GSP
DEN (Denver) to GSP (Greenville)
DEN → GSP on-time performance by month
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This route is usually on time. About 86% 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 88% vs SkyWest Airlines at 86%.
Airline Comparison
United Airlines leads at 88% on time; SkyWest Airlines trails at 86%.
Accurate?
Good to know
Departing from DEN
79% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. DEN has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at GSP
80% on timeWhen flights into GSP are late, the average delay is 74 minutes. Build buffer if you have ground plans.
If connecting at GSP: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
GSP has a 2.3% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
Check what United Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of DEN? 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.