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

Chicago, IL (ORD) to Pittsburgh, PA (PIT) flight delay odds

73.3% of 3,948 official scheduled ORD-to-PIT flights arrived on time; 17.3% 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
73.3%arrived on time
17.3%30+ min late
2.0%cancelled
3,948scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.0%all scheduled flights
120+ minutes late4.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+13.0 mincompleted flights

Which departure time was most reliable for ORD to PIT?

Among qualifying ORD-to-PIT departure window results, Early morning had the highest on-time rate: 84.9% of 551 flights. Evening was lowest at 62.2% across 1,007 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning55184.9%9.1%0.9%
Late morning63079.5%13.0%0.8%
Afternoon1,28673.9%17.1%1.5%
Evening1,00762.2%25.9%2.6%
Night47473.8%14.8%4.6%

Which weekday was most reliable for ORD to PIT?

Among qualifying ORD-to-PIT weekday results, Tuesday had the highest on-time rate: 80.8% of 578 flights. Monday was lowest at 66.8% across 600 flights.

DayFlightsOn time30+ minCancelled
Monday60066.8%21.3%2.8%
Tuesday57880.8%13.5%1.2%
Wednesday56074.5%15.5%1.6%
Thursday57873.7%16.8%1.7%
Friday56874.1%16.7%1.1%
Saturday48375.2%16.1%2.7%
Sunday58168.8%20.7%2.6%

Which airline was most reliable for ORD to PIT?

Among qualifying ORD-to-PIT airline results, Envoy Air had the highest on-time rate: 81.5% of 189 flights. American Airlines was lowest at 53.2% across 603 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways1,62879.5%13.0%2.3%
United Airlines1,29174.9%15.1%1.0%
American Airlines60353.2%34.2%3.0%
SkyWest Airlines23767.1%22.8%2.1%
Envoy Air18981.5%9.0%2.1%

Which month was most reliable for ORD to PIT?

Among qualifying ORD-to-PIT month results, September 2025 had the highest on-time rate: 84.9% of 345 flights. March 2026 was lowest at 58.0% across 281 flights.

MonthFlightsOn time30+ minCancelled
July 202533867.8%21.9%2.1%
August 202534378.7%14.6%2.3%
September 202534584.9%9.6%0.3%
October 202537279.0%11.0%0.3%
November 202532972.6%16.1%4.3%
December 202530463.5%24.7%1.0%
January 202627166.8%19.9%3.7%
February 202625777.4%14.4%0.4%
March 202628158.0%28.1%2.8%
April 202634671.1%18.8%2.9%
May 202639779.8%14.6%0.8%
June 202636574.2%17.5%3.0%

What drove ORD to PIT delay minutes?

Late aircraft was the largest recorded ORD-to-PIT delay category, accounting for 52.3% of 78,395 BTS-attributed delay minutes during July 2025–June 2026.

Airline25.8%
Late aircraft52.3%
National airspace13.7%
Weather8.2%
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.