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

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

78.9% of 465 official scheduled ROC-to-MDW flights arrived on time; 12.3% arrived at least 30 minutes late and 1.3% 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
78.9%arrived on time
12.3%30+ min late
1.3%cancelled
465scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.4%all scheduled flights
120+ minutes late3.2%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+4.5 mincompleted flights

Which departure time was most reliable for ROC to MDW?

Among qualifying ROC-to-MDW departure window results, Early morning had the highest on-time rate: 89.7% of 232 flights. Evening was lowest at 63.8% across 185 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning23289.7%5.6%0.9%
Evening18563.8%21.6%2.2%

Which weekday was most reliable for ROC to MDW?

Among qualifying ROC-to-MDW weekday results, Saturday had the highest on-time rate: 88.5% of 52 flights. Monday was lowest at 69.6% across 69 flights.

DayFlightsOn time30+ minCancelled
Monday6969.6%23.2%0.0%
Tuesday7081.4%7.1%0.0%
Wednesday6886.8%8.8%0.0%
Thursday6876.5%10.3%2.9%
Friday6981.2%10.1%1.4%
Saturday5288.5%9.6%0.0%
Sunday6971.0%15.9%4.3%

Which airline was most reliable for ROC to MDW?

Only Southwest Airlines met the ROC-to-MDW airline threshold: 78.9% of 465 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines46578.9%12.3%1.3%

Which month was most reliable for ROC to MDW?

Among qualifying ROC-to-MDW month results, August 2025 had the highest on-time rate: 96.8% of 31 flights. March 2026 was lowest at 58.6% across 58 flights.

MonthFlightsOn time30+ minCancelled
July 20253174.2%16.1%3.2%
August 20253196.8%0.0%0.0%
September 20253090.0%6.7%0.0%
October 20253193.5%0.0%0.0%
November 20252788.9%7.4%0.0%
December 20252975.9%13.8%0.0%
January 20262766.7%14.8%3.7%
February 20262777.8%14.8%0.0%
March 20265858.6%24.1%3.4%
April 20265780.7%14.0%1.8%
May 20265784.2%7.0%0.0%
June 20266075.0%16.7%1.7%

What drove ROC to MDW delay minutes?

Late aircraft was the largest recorded ROC-to-MDW delay category, accounting for 41.1% of 5,806 BTS-attributed delay minutes during July 2025–June 2026.

Airline29.3%
Late aircraft41.1%
National airspace29.6%
Weather0.0%
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.