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

Greer, SC (GSP) to Atlanta, GA (ATL) flight delay odds

88.9% of 2,818 official scheduled GSP-to-ATL flights arrived on time; 6.8% arrived at least 30 minutes late and 1.5% 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 SIGNALGenerally reliable
88.9%arrived on time
6.8%30+ min late
1.5%cancelled
2,818scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.2%all scheduled flights
120+ minutes late2.1%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival-5.5 mincompleted flights

Which departure time was most reliable for GSP to ATL?

Among qualifying GSP-to-ATL departure window results, Early morning had the highest on-time rate: 92.6% of 1,061 flights. Evening was lowest at 81.6% across 521 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,06192.6%4.1%1.6%
Late morning55391.5%5.4%1.4%
Afternoon68386.7%8.1%1.3%
Evening52181.6%12.1%1.7%

Which weekday was most reliable for GSP to ATL?

Among qualifying GSP-to-ATL weekday results, Wednesday had the highest on-time rate: 93.7% of 383 flights. Sunday was lowest at 83.5% across 423 flights.

DayFlightsOn time30+ minCancelled
Monday43186.1%9.0%1.4%
Tuesday39589.1%8.4%1.3%
Wednesday38393.7%3.4%0.3%
Thursday42492.5%4.7%0.2%
Friday42590.1%6.1%0.5%
Saturday33787.5%5.9%3.0%
Sunday42383.5%9.5%4.3%

Which airline was most reliable for GSP to ATL?

Only Delta Air Lines met the GSP-to-ATL airline threshold: 88.9% of 2,818 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines2,81888.9%6.8%1.5%

Which month was most reliable for GSP to ATL?

Among qualifying GSP-to-ATL month results, April 2026 had the highest on-time rate: 93.8% of 241 flights. March 2026 was lowest at 81.0% across 231 flights.

MonthFlightsOn time30+ minCancelled
July 202525284.5%9.9%0.4%
August 202525288.1%7.1%0.4%
September 202523893.3%4.6%0.0%
October 202525490.9%7.1%0.0%
November 202523291.8%4.3%2.6%
December 202520888.5%6.2%1.4%
January 202620587.8%2.9%7.8%
February 202620491.7%5.4%2.0%
March 202623181.0%13.0%2.2%
April 202624193.8%2.5%1.7%
May 202625486.6%9.1%1.2%
June 202624789.1%8.1%0.0%

What drove GSP to ATL delay minutes?

Late aircraft was the largest recorded GSP-to-ATL delay category, accounting for 44.9% of 22,030 BTS-attributed delay minutes during July 2025–June 2026.

Airline33.0%
Late aircraft44.9%
National airspace18.4%
Weather3.7%
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.