ORD to ROC flight delays
Chicago, IL (ORD) Rochester, NY (ROC) · 528 miles
2,320 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
74.21%
Arrived on time
Within 15 minutes of schedule
2.24%
Cancelled
Share of scheduled flights
65 min
When late, late by
Average across delayed arrivals
18 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Which airline you fly changes the odds here. Republic Airways arrived on time 17 points more often than United Airlines over the same period on the same route — same airports, same weather, same air traffic control. A gap that survives all of that is about how the two airlines are run.
Flights from Chicago to Rochester run late more often than the average route, though not severely.
Which airline should you fly on this route?
Over January 2025 – August 2026, Republic Airways arrived on time most often on ORD to ROC. United Airlines was late most often. Flights ran closest to schedule in May and worst in February.
Every airline on ORD to ROC
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Envoy Air | 813 | 80.05% | 2.34% | 62 min | C |
| Republic Airways | 695 | 80.18% | 2.16% | 67 min | C |
| United Airlines | 587 | 63.21% | 1.36% | 66 min | F |
| SkyWest Airlines | 225 | 63.55% | 4.44% | 67 min | F |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
ROC to ORD Rochester back to Chicago 74.74% on time DOther routes from Chicago
Common questions
Are flights from Chicago to Rochester usually delayed?
74.21% of flights on the ORD to ROC route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Chicago to Rochester?
Republic Airways, at 80.18% on time across 695 flights. The least punctual on the route was United Airlines at 63.21%.
How often are ORD to ROC flights cancelled?
2.24% of scheduled flights did not operate — about 22 in every thousand. That is in the normal range.
What is the best month to fly Chicago to Rochester?
May, when 82.2% of flights arrived on time. The worst was February at 65%.
When ORD to ROC flights are late, how late are they?
About 65 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on ORD to ROC during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →