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

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

Historically, 84.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 979 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
84.3%arrived on time
8.5%30+ min late
2.1%cancelled
979scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.5%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival-3.3 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 morning35088.3%5.7%2.6%
Late morning18287.4%8.2%0.5%
Afternoon16178.9%9.9%3.1%
Evening28680.4%11.2%2.1%

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
Monday14781.0%9.5%2.7%
Tuesday15082.0%10.0%1.3%
Wednesday14790.5%6.8%0.0%
Thursday14588.3%8.3%0.7%
Friday14584.8%7.6%1.4%
Saturday10386.4%4.9%2.9%
Sunday14277.5%11.3%6.3%

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 Lines97984.3%8.5%2.1%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 20258881.8%13.6%0.0%
August 20258485.7%2.4%2.4%
September 20258192.6%4.9%0.0%
October 20258880.7%14.8%0.0%
November 20258386.7%8.4%1.2%
December 20255678.6%14.3%0.0%
January 20267578.7%10.7%6.7%
February 20267882.1%6.4%5.1%
March 20268679.1%8.1%3.5%
April 20268485.7%8.3%2.4%
May 20268787.4%4.6%4.6%
June 20268989.9%6.7%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.

Airline62.5%
Late aircraft25.4%
National airspace11.8%
Weather0.4%
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.