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

Grand Rapids, MI (GRR) to Atlanta, GA (ATL) flight delay odds

85.3% of 1,433 official scheduled GRR-to-ATL flights arrived on time; 8.3% arrived at least 30 minutes late and 1.3% 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 SIGNALLower disruption
85.3%arrived on time
8.3%30+ min late
1.3%cancelled
1,433scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.4%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival-3.6 mincompleted flights

Which departure time was most reliable for GRR to ATL?

Among qualifying GRR-to-ATL departure window results, Early morning had the highest on-time rate: 86.9% of 696 flights. Evening was lowest at 82.7% across 306 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning69686.9%8.2%0.7%
Afternoon41884.2%7.2%2.4%
Evening30682.7%10.5%1.0%

Which weekday was most reliable for GRR to ATL?

Among qualifying GRR-to-ATL weekday results, Wednesday had the highest on-time rate: 88.7% of 203 flights. Sunday was lowest at 81.9% across 226 flights.

DayFlightsOn time30+ minCancelled
Monday20585.4%11.2%1.0%
Tuesday21385.0%9.4%0.5%
Wednesday20388.7%6.4%0.0%
Thursday22485.3%6.2%0.9%
Friday20387.7%7.4%1.0%
Saturday15983.6%6.9%4.4%
Sunday22681.9%10.2%1.8%

Which airline was most reliable for GRR to ATL?

Among qualifying GRR-to-ATL airline results, Delta Air Lines had the highest on-time rate: 86.0% of 1,382 flights. Frontier Airlines was lowest at 66.7% across 51 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,38286.0%8.0%1.2%
Frontier Airlines5166.7%15.7%2.0%

Which month was most reliable for GRR to ATL?

Among qualifying GRR-to-ATL month results, September 2025 had the highest on-time rate: 96.4% of 111 flights. January 2026 was lowest at 67.5% across 117 flights.

MonthFlightsOn time30+ minCancelled
July 202512589.6%4.0%0.8%
August 202512790.6%3.1%1.6%
September 202511196.4%2.7%0.0%
October 202512693.7%4.8%0.0%
November 202512286.9%7.4%1.6%
December 202512170.2%18.2%3.3%
January 202611767.5%19.7%1.7%
February 202610684.9%8.5%0.9%
March 202612777.2%11.8%2.4%
April 202612089.2%6.7%1.7%
May 202611889.8%5.1%0.0%
June 202611388.5%8.0%0.9%

What drove GRR to ATL delay minutes?

Airline was the largest recorded GRR-to-ATL delay category, accounting for 50.2% of 14,583 BTS-attributed delay minutes during July 2025–June 2026.

Airline50.2%
Late aircraft25.2%
National airspace20.0%
Weather4.5%
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.