RST to ORD flight delays & on-time performance
Nonstop flights from Rochester International Airport to Chicago O'Hare International Airport · 268 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at RST 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 (RST) to Chicago (ORD) arrived on time 67% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4.7% were cancelled, and 16% arrived an hour or more late.
- Envoy Air was the most punctual airline here (74% on time); SkyWest Airlines was the least (58%).
- Departures scheduled around 5am did best (79% on time); around 6pm did worst (51%).
- Tuesday was the most reliable day to fly (73% on time) and Monday the least (59%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (47%).
Which airline is most on time from RST 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 |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 74% | 4.7% | 19 min | 9.6% | 578 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 58% | 4.8% | 51 min | 23.2% | 479 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am79%169 flights
- 6am67%188 flights
- 10am75%72 flights
- 11am72%173 flights
- 12pm69%96 flights
- 4pm83%25 flights
- 6pm51%269 flights
- 7pm68%40 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday59%6.5% cancelled
- Tuesday73%2.7% cancelled
- Wednesday69%2.8% cancelled
- Thursday69%2.0% cancelled
- Friday62%5.9% cancelled
- Saturday71%4.1% cancelled
- Sunday65%9.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)47%
- Late-arriving aircraft22%
- Air traffic control & airport congestion19%
- Extreme weather12%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather76%
- Air traffic control & airport congestion24%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
RST to ORD: common questions
- How often are RST to ORD flights on time?
- 67% 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?
- 4.7% of scheduled flights were cancelled (50 of 1,057).
- How long are typical delays?
- Across all flights the average arrival delay was 34 min (early arrivals count as zero). Flights that were late arrived 98 min behind schedule on average, and 15.8% of flights were an hour or more late.
- How long is taxi time at RST?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: RST → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.