How reliable is Buffalo Niagara International Airport?
Flights from BUF departed within 15 minutes of schedule in 81% of 134,624 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 BUF looks like
On-time departures
across 134,624 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 Buffalo
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 · 97/100 favorability
Roughest month
Most disruptive — snow, low visibility & fog · 69/100 favorability
The read on BUF
What the numbers say about flying through Buffalo Niagara International Airport
Across official performance history, flights from Buffalo left within 15 minutes of schedule about 81% of the time over 134,624 flights. That's a solid, better-than-average operational record. Pair it with an elevated cancellation rate of 2.9% — worth weighing alongside the on-time figure. When a departure does run late, the typical delay is around 13 minutes.
On weather, Buffalo is an unusually calm-weather airport year-round. August is the calmest stretch for flying, scoring 97 out of 100 for favorable conditions, while January is the most disruptive at 69, 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 Buffalo, 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 BUF
- How reliable is Buffalo Niagara International Airport (BUF)?
- Flights from Buffalo left within 15 minutes of schedule roughly 81% of the time across 134,624 flights of official history — a solid, better-than-average operational record. The cancellation rate runs about 2.9%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from BUF for good weather?
- August has the calmest flying weather at Buffalo Niagara International Airport. January is the most disruptive, mainly from snow and low visibility & fog.
Planning a trip through Buffalo?
Score real flights to and from BUF on reliability, weather, and connection safety — not just price.