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Route Reliability

Las Vegas → Buffalo

LAS–BUF · 1,986 miles · Harry Reid International Airport to Buffalo Niagara International Airport

75
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
11 min
Average arrival delay
0.6%
Cancelled
360
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 71% of the time across 360 flights. No comparison to make.

What the data says

Morning flights do better here.

LAS–BUF flights departing between 9 AM–12 PM arrived on time 85% of the time, versus 60% between 12–3 PM.

Sunday scaries are real for this one.

LAS–BUF flights arrived on time 83% of the time on Wednesdays and just 57% on Sundays. That gap is worth planning around.

Recent months have been rougher.

LAS–BUF flights arrived on time 68% of the time over the last three months in the data, compared with 77% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon69%(51 flights)
  • Tue73%(52 flights)
  • Wed83%(52 flights)
  • Thu62%(52 flights)
  • Fri75%(52 flights)
  • Sat79%(47 flights)
  • Sun57%(51 flights)
On-time by departure window
  • 6–9 AM78%(78 flights)
  • 9 AM–12 PM85%(53 flights)
  • 12–3 PM60%(78 flights)
  • 3–6 PM69%(117 flights)
  • 6–9 PM61%(31 flights)
On-time trend by month
65%
May

Jun 62% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%34
July 202563%35
August 202572%32
September 202572%29
October 202581%31
November 202571%28
December 202566%29
January 202677%26
February 202689%26
March 202674%27
April 202666%29
May 202665%31

Keep nerding

Based on 360 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.