ROC to ORD flight delays & on-time performance
Nonstop flights from Frederick Douglass Greater Rochester International Airport to Chicago O'Hare International Airport · 528 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ROC or ORD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Rochester (ROC) to Chicago (ORD) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.4% were cancelled, and 10% arrived an hour or more late.
- Republic Airways was the most punctual airline here (82% on time); SkyWest Airlines was the least (63%).
- Departures scheduled around 5am did best (94% on time); around 5pm did worst (49%).
- Saturday was the most reliable day to fly (79% on time) and Sunday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (37%).
Which airline is most on time from ROC to ORD?
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. | 82% | 2.5% | 16 min | 8.0% | 715 |
| Envoy AirRegional airline operating American Eagle flights. | 80% | 2.3% | 19 min | 8.2% | 785 |
| United Airlines | 68% | 1.5% | 27 min | 12.3% | 588 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 63% | 4.5% | 48 min | 19.6% | 267 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am94%89 flights
- 6am83%554 flights
- 7am82%63 flights
- 10am90%190 flights
- 11am81%297 flights
- 12pm86%90 flights
- 1pm84%267 flights
- 2pm71%60 flights
- 3pm87%31 flights
- 5pm49%398 flights
- 6pm65%124 flights
- 7pm68%66 flights
- 8pm61%116 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%5.1% cancelled
- Tuesday78%1.5% cancelled
- Wednesday72%0.6% cancelled
- Thursday79%1.8% cancelled
- Friday77%2.0% cancelled
- Saturday79%2.4% cancelled
- Sunday69%3.5% 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 aircraft37%
- Air traffic control & airport congestion34%
- Airline (crew, maintenance, cleaning, fueling)26%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather72%
- Air traffic control & airport congestion26%
- Airline (crew, maintenance, cleaning, fueling)2%
- Security0%
ROC to ORD: common questions
- How often are ROC to ORD flights on time?
- 76% 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 Rochester to Chicago cancelled?
- 2.4% of scheduled flights were cancelled (57 of 2,355).
- How long are typical delays?
- Across all flights the average arrival delay was 23 min (early arrivals count as zero). Flights that were late arrived 91 min behind schedule on average, and 10.5% of flights were an hour or more late.
- How long is taxi time at ROC?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to ROC — 74% on time
More flights from Rochester
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ROC → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.