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

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

Historically, 83.8% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 599 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

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

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.