Which airline is most reliable for DEN (Denver) to GSP (Greenville)?

The most reliable airline on the DEN to GSP route is United Airlines, with an on-time arrival rate of 87%.

How often are flights delayed from DEN to GSP?

About 16% of flights from DEN to GSP experience delays. 84% arrive on time.

What's the average delay on DEN to GSP flights?

When flights from DEN to GSP are delayed, the average delay is approximately 43 minutes.

Is a short connection safe after a DEN to GSP flight?

With 84% of DEN to GSP flights arriving on time and an average delay of 43 minutes when late, a connection under 60 minutes at GSP is risky. We recommend at least 75-90 minutes for domestic connections after this route.

DEN → GSP

DEN (Denver) to GSP (Greenville)

DEN (Denver) to GSP (Greenville) flights arrive on time 84% of the time. The most reliable airline on this route is United Airlines at 87%. The average delay is 43 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated May 2026.

DEN → GSP on-time performance by month

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This route is on time most of the time. About 84% 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 87% vs SkyWest Airlines at 84%.

Airline Comparison

United Airlines leads at 87% on time; SkyWest Airlines trails at 84%.

Accurate?

Good to know

Departing from DEN

78% on time

Expect ~17 min sitting on the taxiway after your gate pushes back. DEN has long runway queues.

TSA is currently ~13 min. Best time: 4 AM (about 5 min).

More about DEN →

Arriving at GSP

83% on time

When flights into GSP are late, the average delay is 71 minutes. Build buffer if you have ground plans.

If connecting at GSP: TSA is ~19 min right now. Allow at least 60 minutes for a domestic connection.

More about GSP →Connection times at GSP →

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Data last updated May 2026. Source: Bureau of Transportation Statistics.