BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
GSP→DEN

Greer, SC (GSP) to Denver, CO (DEN) flight delay odds

77.1% of 375 official scheduled GSP-to-DEN flights arrived on time; 12.0% arrived at least 30 minutes late and 1.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
77.1%arrived on time
12.0%30+ min late
1.1%cancelled
375scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.7%all scheduled flights
120+ minutes late2.7%all scheduled flights
Diverted2.1%did not reach as scheduled
Average arrival+3.9 mincompleted flights

Which departure time was most reliable for GSP to DEN?

Only Afternoon met the GSP-to-DEN departure window threshold: 78.0% of 369 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Afternoon36978.0%12.2%1.1%

Which weekday was most reliable for GSP to DEN?

Among qualifying GSP-to-DEN weekday results, Wednesday had the highest on-time rate: 84.6% of 52 flights. Sunday was lowest at 66.7% across 57 flights.

DayFlightsOn time30+ minCancelled
Monday5276.9%13.5%0.0%
Tuesday5383.0%11.3%0.0%
Wednesday5284.6%15.4%0.0%
Thursday5176.5%9.8%0.0%
Friday5375.5%9.4%1.9%
Saturday5777.2%14.0%1.8%
Sunday5766.7%10.5%3.5%

Which airline was most reliable for GSP to DEN?

Among qualifying GSP-to-DEN airline results, SkyWest Airlines had the highest on-time rate: 81.0% of 142 flights. United Airlines was lowest at 76.7% across 223 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines22376.7%14.3%0.0%
SkyWest Airlines14281.0%9.2%2.8%
Southwest Airlines1030.0%0.0%0.0%

Which month was most reliable for GSP to DEN?

Among qualifying GSP-to-DEN month results, November 2025 had the highest on-time rate: 100.0% of 30 flights. July 2025 was lowest at 48.7% across 39 flights.

MonthFlightsOn time30+ minCancelled
July 20253948.7%17.9%0.0%
August 20253360.6%21.2%0.0%
September 20253080.0%20.0%0.0%
October 20253190.3%9.7%0.0%
November 202530100.0%0.0%0.0%
December 20253180.6%12.9%0.0%
January 20263174.2%9.7%6.5%
February 20262885.7%7.1%0.0%
March 20263180.6%9.7%6.5%
April 20263090.0%3.3%0.0%
May 20263180.6%12.9%0.0%
June 20263063.3%16.7%0.0%

What drove GSP to DEN delay minutes?

National airspace was the largest recorded GSP-to-DEN delay category, accounting for 58.4% of 4,980 BTS-attributed delay minutes during July 2025–June 2026.

Airline24.3%
Late aircraft14.6%
National airspace58.4%
Weather2.7%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.