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

Greer, SC (GSP) to Detroit, MI (DTW) flight delay odds

83.8% of 599 official scheduled GSP-to-DTW flights arrived on time; 9.7% arrived at least 30 minutes late and 2.5% 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 SIGNALVariable
83.8%arrived on time
9.7%30+ min late
2.5%cancelled
599scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.3%all scheduled flights
120+ minutes late3.8%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+0.4 mincompleted flights

Which departure time was most reliable for GSP to DTW?

Among qualifying GSP-to-DTW departure window results, Early morning had the highest on-time rate: 90.8% of 304 flights. Evening was lowest at 73.5% across 185 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning30490.8%3.6%2.6%
Late morning10482.7%12.5%0.0%
Evening18573.5%17.3%3.8%

Which weekday was most reliable for GSP to DTW?

Among qualifying GSP-to-DTW weekday results, Saturday had the highest on-time rate: 90.3% of 72 flights. Tuesday was lowest at 79.8% across 89 flights.

DayFlightsOn time30+ minCancelled
Monday8780.5%13.8%3.4%
Tuesday8979.8%11.2%1.1%
Wednesday8681.4%15.1%0.0%
Thursday8787.4%2.3%2.3%
Friday8786.2%10.3%1.1%
Saturday7290.3%4.2%4.2%
Sunday9182.4%9.9%5.5%

Which airline was most reliable for GSP to DTW?

Among qualifying GSP-to-DTW airline results, Delta Air Lines had the highest on-time rate: 88.5% of 392 flights. SkyWest Airlines was lowest at 74.9% across 207 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines39288.5%6.1%2.3%
SkyWest Airlines20774.9%16.4%2.9%

Which month was most reliable for GSP to DTW?

Among qualifying GSP-to-DTW month results, October 2025 had the highest on-time rate: 100.0% of 36 flights. January 2026 was lowest at 71.4% across 56 flights.

MonthFlightsOn time30+ minCancelled
July 20258078.8%13.8%1.2%
August 20256590.8%6.2%0.0%
September 20255290.4%3.8%0.0%
October 202536100.0%0.0%0.0%
November 20254774.5%14.9%8.5%
December 20255784.2%10.5%3.5%
January 20265671.4%17.9%8.9%
February 20265483.3%7.4%1.9%
March 20263574.3%20.0%2.9%
April 20262688.5%3.8%0.0%
May 20265585.5%10.9%1.8%
June 20263691.7%0.0%0.0%

What drove GSP to DTW delay minutes?

Airline was the largest recorded GSP-to-DTW delay category, accounting for 65.5% of 8,076 BTS-attributed delay minutes during July 2025–June 2026.

Airline65.5%
Late aircraft9.2%
National airspace5.2%
Weather20.1%
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.