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

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

82.1% of 1,434 official scheduled ATL-to-GRR flights arrived on time; 10.3% 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
82.1%arrived on time
10.3%30+ min late
1.3%cancelled
1,434scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.0%all scheduled flights
120+ minutes late2.3%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+5.0 mincompleted flights

Which departure time was most reliable for ATL to GRR?

Among qualifying ATL-to-GRR departure window results, Late morning had the highest on-time rate: 86.1% of 402 flights. Night was lowest at 79.2% across 365 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning40286.1%6.0%2.5%
Afternoon38482.6%10.4%0.8%
Evening28179.7%13.9%0.7%
Night36579.2%12.1%1.1%

Which weekday was most reliable for ATL to GRR?

Among qualifying ATL-to-GRR weekday results, Wednesday had the highest on-time rate: 88.7% of 204 flights. Monday was lowest at 78.6% across 206 flights.

DayFlightsOn time30+ minCancelled
Monday20678.6%14.1%1.0%
Tuesday21182.0%10.0%0.0%
Wednesday20488.7%4.9%0.0%
Thursday22483.9%9.8%0.9%
Friday20381.3%9.4%2.5%
Saturday15979.9%10.7%3.1%
Sunday22779.7%12.8%2.2%

Which airline was most reliable for ATL to GRR?

Among qualifying ATL-to-GRR airline results, Delta Air Lines had the highest on-time rate: 82.6% of 1,383 flights. Frontier Airlines was lowest at 68.6% across 51 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,38382.6%9.9%1.3%
Frontier Airlines5168.6%19.6%2.0%

Which month was most reliable for ATL to GRR?

Among qualifying ATL-to-GRR month results, September 2025 had the highest on-time rate: 91.9% of 111 flights. July 2025 was lowest at 73.6% across 125 flights.

MonthFlightsOn time30+ minCancelled
July 202512573.6%16.8%0.8%
August 202512786.6%9.4%1.6%
September 202511191.9%5.4%0.0%
October 202512690.5%5.6%0.0%
November 202512280.3%9.8%1.6%
December 202512174.4%14.0%3.3%
January 202611876.3%11.0%1.7%
February 202610681.1%9.4%0.9%
March 202612774.0%16.5%3.1%
April 202612086.7%9.2%1.7%
May 202611887.3%5.9%0.0%
June 202611383.2%8.8%0.9%

What drove ATL to GRR delay minutes?

Airline was the largest recorded ATL-to-GRR delay category, accounting for 51.2% of 15,331 BTS-attributed delay minutes during July 2025–June 2026.

Airline51.2%
Late aircraft22.7%
National airspace16.4%
Weather9.3%
Security0.3%
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.