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

Harrisburg, PA (MDT) to Chicago, IL (ORD) flight delay odds

Historically, 73.1% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,061 flights.

HISTORICAL ROUTE SIGNALVariable
73.1%arrived on time
16.2%30+ min late
2.9%cancelled
2,061scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.5%all scheduled flights
120+ minutes late4.1%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+13.0 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 morning79085.1%8.2%1.8%
Late morning43776.7%14.9%1.8%
Afternoon23166.7%21.2%2.6%
Evening60357.4%25.5%5.1%

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
Monday31473.6%15.0%3.8%
Tuesday29275.0%16.4%1.0%
Wednesday27777.6%13.7%1.4%
Thursday30273.5%16.6%2.3%
Friday29970.2%16.1%2.7%
Saturday25876.7%14.7%1.6%
Sunday31966.5%20.1%6.6%

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
Envoy Air71772.7%17.0%2.8%
United Airlines57074.9%13.0%2.3%
Republic Airways29282.5%9.9%2.1%
SkyWest Airlines26264.1%24.8%3.4%
American Airlines22068.2%19.5%5.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202512973.6%17.8%2.3%
August 202512984.5%7.0%3.9%
September 202512983.7%9.3%0.0%
October 202517074.7%16.5%0.0%
November 202519674.5%16.8%4.1%
December 202516152.8%33.5%3.7%
January 202617267.4%16.3%5.8%
February 202616776.0%15.0%1.8%
March 202617763.3%20.3%4.5%
April 202624474.2%14.3%2.5%
May 202621379.8%9.9%2.8%
June 202617475.3%16.7%2.3%

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.

Airline20.1%
Late aircraft36.3%
National airspace32.4%
Weather11.1%
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.