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

Atlanta, GA (ATL) to Harrisburg, PA (MDT) flight delay odds

81.0% of 979 official scheduled ATL-to-MDT flights arrived on time; 11.0% arrived at least 30 minutes late and 2.0% 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
81.0%arrived on time
11.0%30+ min late
2.0%cancelled
979scheduled 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 late2.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+4.4 mincompleted flights

Which departure time was most reliable for ATL to MDT?

Among qualifying ATL-to-MDT departure window results, Late morning had the highest on-time rate: 85.5% of 324 flights. Night was lowest at 77.8% across 333 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning32485.5%8.3%1.9%
Afternoon28978.9%11.1%2.1%
Night33377.8%14.1%2.1%

Which weekday was most reliable for ATL to MDT?

Among qualifying ATL-to-MDT weekday results, Wednesday had the highest on-time rate: 87.8% of 147 flights. Monday was lowest at 74.1% across 147 flights.

DayFlightsOn time30+ minCancelled
Monday14774.1%14.3%1.4%
Tuesday15084.7%10.7%0.0%
Wednesday14787.8%7.5%0.0%
Thursday14582.1%10.3%1.4%
Friday14578.6%13.1%1.4%
Saturday10282.4%9.8%4.9%
Sunday14377.6%11.2%6.3%

Which airline was most reliable for ATL to MDT?

Only Delta Air Lines met the ATL-to-MDT airline threshold: 81.0% of 979 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines97981.0%11.0%2.0%

Which month was most reliable for ATL to MDT?

Among qualifying ATL-to-MDT month results, September 2025 had the highest on-time rate: 88.9% of 81 flights. March 2026 was lowest at 68.6% across 86 flights.

MonthFlightsOn time30+ minCancelled
July 20258873.9%20.5%1.1%
August 20258482.1%9.5%1.2%
September 20258188.9%3.7%0.0%
October 20258886.4%9.1%0.0%
November 20258380.7%12.0%1.2%
December 20255581.8%16.4%0.0%
January 20267671.1%11.8%9.2%
February 20267882.1%7.7%2.6%
March 20268668.6%18.6%3.5%
April 20268484.5%10.7%2.4%
May 20268787.4%4.6%3.4%
June 20268984.3%9.0%0.0%

What drove ATL to MDT delay minutes?

Airline was the largest recorded ATL-to-MDT delay category, accounting for 37.9% of 10,214 BTS-attributed delay minutes during July 2025–June 2026.

Airline37.9%
Late aircraft35.2%
National airspace21.0%
Weather6.0%
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.