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

Chicago, IL (ORD) to Rochester, NY (ROC) flight delay odds

72.3% of 2,320 official scheduled ORD-to-ROC flights arrived on time; 17.6% arrived at least 30 minutes late and 2.2% 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
72.3%arrived on time
17.6%30+ min late
2.2%cancelled
2,320scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.9%all scheduled flights
120+ minutes late3.5%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+9.8 mincompleted flights

Which departure time was most reliable for ORD to ROC?

Among qualifying ORD-to-ROC departure window results, Early morning had the highest on-time rate: 83.7% of 473 flights. Evening was lowest at 64.4% across 592 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning47383.7%10.4%0.6%
Late morning40382.4%10.9%1.5%
Afternoon74466.9%21.1%3.0%
Evening59264.4%22.5%2.5%
Night10865.7%24.1%5.6%

Which weekday was most reliable for ORD to ROC?

Among qualifying ORD-to-ROC weekday results, Tuesday had the highest on-time rate: 77.3% of 339 flights. Sunday was lowest at 62.8% across 341 flights.

DayFlightsOn time30+ minCancelled
Monday35072.3%18.6%3.4%
Tuesday33977.3%13.6%0.6%
Wednesday32972.3%19.1%1.5%
Thursday33975.8%13.3%2.7%
Friday33573.1%16.1%1.5%
Saturday28772.8%17.1%2.1%
Sunday34162.8%25.5%3.8%

Which airline was most reliable for ORD to ROC?

Among qualifying ORD-to-ROC airline results, Republic Airways had the highest on-time rate: 78.0% of 695 flights. SkyWest Airlines was lowest at 60.4% across 225 flights.

AirlineFlightsOn time30+ minCancelled
Envoy Air81378.0%14.0%2.3%
Republic Airways69578.0%14.1%2.2%
United Airlines58762.4%23.9%1.4%
SkyWest Airlines22560.4%25.3%4.4%

Which month was most reliable for ORD to ROC?

Among qualifying ORD-to-ROC month results, May 2026 had the highest on-time rate: 81.1% of 222 flights. December 2025 was lowest at 62.7% across 193 flights.

MonthFlightsOn time30+ minCancelled
July 202520173.1%16.4%1.5%
August 202519175.9%16.2%2.6%
September 202520180.6%10.4%0.5%
October 202517875.8%14.6%0.0%
November 202522574.2%17.8%2.7%
December 202519362.7%24.4%3.6%
January 202615963.5%23.9%5.0%
February 202616063.8%24.4%0.6%
March 202615871.5%17.1%2.5%
April 202622269.8%19.8%3.2%
May 202622281.1%13.1%1.4%
June 202621071.4%16.2%3.3%

What drove ORD to ROC delay minutes?

Late aircraft was the largest recorded ORD-to-ROC delay category, accounting for 46.4% of 38,058 BTS-attributed delay minutes during July 2025–June 2026.

Airline26.5%
Late aircraft46.4%
National airspace20.5%
Weather6.6%
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.