How reliable is Greater Rochester International Airport?
Flights from ROC departed within 15 minutes of schedule in 82% of 91,235 flights in official BTS history — and weather is calmest in Aug. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at ROC looks like
On-time departures
across 91,235 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
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Weather by month
When the weather works for you at Rochester
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 96/100 favorability
Roughest month
Most disruptive — snow, low visibility & fog · 70/100 favorability
The read on ROC
What the numbers say about flying through Greater Rochester International Airport
Across official performance history, flights from Rochester left within 15 minutes of schedule about 82% of the time over 91,235 flights. That's a solid, better-than-average operational record. Pair it with an elevated cancellation rate of 2.6% — worth weighing alongside the on-time figure. When a departure does run late, the typical delay is around 13 minutes.
On weather, Rochester is an unusually calm-weather airport year-round. August is the calmest stretch for flying, scoring 96 out of 100 for favorable conditions, while February is the most disruptive at 70, driven mainly by snow and low visibility & fog. The seasonal swing is real but manageable; favor the calmer months when your dates are flexible.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to Rochester, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about ROC
- How reliable is Greater Rochester International Airport (ROC)?
- Flights from Rochester left within 15 minutes of schedule roughly 82% of the time across 91,235 flights of official history — a solid, better-than-average operational record. The cancellation rate runs about 2.6%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from ROC for good weather?
- August has the calmest flying weather at Greater Rochester International Airport. February is the most disruptive, mainly from snow and low visibility & fog.
Planning a trip through Rochester?
Score real flights to and from ROC on reliability, weather, and connection safety — not just price.