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Route Reliability

Phoenix → Buffalo

PHX–BUF · 1,912 miles · Phoenix Sky Harbor International Airport to Buffalo Niagara International Airport

77
Usually Fine
WanderNerd Reliability Score
72%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
245
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 72% of the time across 245 flights. No comparison to make.

What the data says

Morning flights do better here.

PHX–BUF flights departing between 6–9 AM arrived on time 88% of the time, versus 66% between 3–6 PM.

Sunday scaries are real for this one.

PHX–BUF flights arrived on time 86% of the time on Saturdays and just 64% on Sundays. That gap is worth planning around.

Trending in the right direction.

PHX–BUF flights arrived on time 80% of the time over the last three months in the data, compared with 71% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon72%(36 flights)
  • Tue65%(23 flights)
  • Wed73%(22 flights)
  • Thu69%(35 flights)
  • Fri67%(36 flights)
  • Sat86%(55 flights)
  • Sun64%(36 flights)
On-time by departure window
  • 6–9 AM88%(49 flights)
  • 9 AM–12 PM70%(82 flights)
  • 12–3 PM72%(18 flights)
  • 3–6 PM66%(93 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
100%
May

Jun 65% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202565%26
July 202552%27
August 202573%22
September 202591%21
October 202568%34
November 202577%30
December 202570%30
January 202662%13
February 202677%22
May 2026100%10

Keep nerding

Based on 245 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.