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Route Reliability

Buffalo → Las Vegas

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

91
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
2 min early
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 87% of the time across 360 flights. No comparison to make.

What the data says

Morning flights do better here.

BUF–LAS flights departing between 6–9 AM arrived on time 93% of the time, versus 65% between 6–9 PM.

Friday is doing you no favors.

BUF–LAS flights arrived on time 94% of the time on Wednesdays. On Fridays: 81%.

Trending in the right direction.

BUF–LAS flights arrived on time 94% of the time over the last three months in the data, compared with 74% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon84%(50 flights)
  • Tue87%(52 flights)
  • Wed94%(52 flights)
  • Thu90%(51 flights)
  • Fri81%(52 flights)
  • Sat83%(47 flights)
  • Sun87%(53 flights)
On-time by departure window
  • 3–6 AM91%(42 flights)
  • 6–9 AM93%(150 flights)
  • 9 AM–12 PM92%(36 flights)
  • 12–3 PM75%(71 flights)
  • 3–6 PM83%(41 flights)
  • 6–9 PM65%(17 flights)
On-time trend by month
94%
May

Jun 91% → May 94% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202591%34
July 202597%35
August 202594%32
September 202593%30
October 202577%31
November 202575%28
December 202572%29
January 202677%26
February 202674%27
March 202688%25
April 2026100%29
May 202694%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.