ORD to ROC flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Frederick Douglass Greater Rochester International Airport · 528 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or ROC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Rochester (ROC) arrived on time 74% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.4% were cancelled, and 9% arrived an hour or more late.
- Republic Airways was the most punctual airline here (80% on time); SkyWest Airlines was the least (63%).
- Departures scheduled around 7am did best (89% on time); around 6pm did worst (63%).
- Thursday was the most reliable day to fly (78% on time) and Sunday the least (66%).
- The largest source of delay minutes was late-arriving aircraft (45%).
Which airline is most on time from ORD to ROC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 80% | 2.0% | 14 min | 8.1% | 700 |
| Envoy AirRegional airline operating American Eagle flights. | 80% | 2.5% | 13 min | 6.9% | 785 |
| United Airlines | 64% | 1.5% | 26 min | 11.1% | 584 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 63% | 5.2% | 29 min | 14.7% | 267 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am85%62 flights
- 7am89%123 flights
- 8am82%296 flights
- 10am82%239 flights
- 11am88%155 flights
- 12pm86%28 flights
- 1pm66%256 flights
- 2pm66%139 flights
- 3pm74%192 flights
- 4pm64%99 flights
- 5pm60%45 flights
- 6pm63%394 flights
- 8pm76%134 flights
- 9pm70%136 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday74%4.6% cancelled
- Tuesday77%0.3% cancelled
- Wednesday73%1.2% cancelled
- Thursday78%2.4% cancelled
- Friday76%2.0% cancelled
- Saturday75%2.4% cancelled
- Sunday66%4.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft45%
- Airline (crew, maintenance, cleaning, fueling)26%
- Air traffic control & airport congestion20%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather77%
- Air traffic control & airport congestion21%
- Airline (crew, maintenance, cleaning, fueling)2%
- Security0%
ORD to ROC: common questions
- How often are ORD to ROC flights on time?
- 74% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Chicago to Rochester cancelled?
- 2.4% of scheduled flights were cancelled (57 of 2,336).
- How long are typical delays?
- Across all flights the average arrival delay was 19 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 9.2% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 29 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ROC to ORD — 76% on time
More flights from Chicago
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → ROC, nonstop flights by US airlines that report to the DOT. How we calculate this.