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Route Reliability

Raleigh–Durham → Buffalo

RDU–BUF · 487 miles · Raleigh–Durham International Airport to Buffalo Niagara International Airport

72
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
14 min
Average arrival delay
0.9%
Cancelled
106
Flights in the data

Data through May 2026.

Frontier Airlines is the only airline in this data on this route, arriving on time 70% of the time across 106 flights. No comparison to make.

What the data says

The 12–3 PM departure wins.

RDU–BUF flights departing between 12–3 PM arrived on time 100% of the time, versus 58% between 6–9 PM.

Sunday scaries are real for this one.

RDU–BUF flights arrived on time 84% of the time on Thursdays and just 57% on Sundays. That gap is worth planning around.

Trending in the right direction.

RDU–BUF flights arrived on time 85% of the time over the last three months in the data, compared with 67% in the three months before that.

The breakdown

On-time by weekday
  • Mon—(8 flights)
  • Tue—(2 flights)
  • Wed—(1 flights)
  • Thu84%(32 flights)
  • Fri—(5 flights)
  • Sat60%(20 flights)
  • Sun57%(37 flights)
On-time by departure window
  • 6–9 AM—(6 flights)
  • 9 AM–12 PM—(7 flights)
  • 12–3 PM100%(11 flights)
  • 3–6 PM65%(26 flights)
  • 6–9 PM58%(55 flights)
On-time trend by month
80%
May

Jun 46% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202546%11
July 202546%13
August 202571%14
October 202585%13
November 202575%16
April 2026100%11
May 202680%10

Keep nerding

Based on 106 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.