BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
LAS→BUF

Las Vegas, NV (LAS) to Buffalo, NY (BUF) flight delay odds

70.0% of 333 official scheduled LAS-to-BUF flights arrived on time; 17.1% arrived at least 30 minutes late and 0.6% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
70.0%arrived on time
17.1%30+ min late
0.6%cancelled
333scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.3%all scheduled flights
120+ minutes late2.7%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+10.9 mincompleted flights

Which departure time was most reliable for LAS to BUF?

Among qualifying LAS-to-BUF departure window results, Late morning had the highest on-time rate: 83.3% of 54 flights. Afternoon was lowest at 64.4% across 177 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning7675.0%13.2%2.6%
Late morning5483.3%11.1%0.0%
Afternoon17764.4%19.2%0.0%

Which weekday was most reliable for LAS to BUF?

Among qualifying LAS-to-BUF weekday results, Wednesday had the highest on-time rate: 81.6% of 49 flights. Sunday was lowest at 52.1% across 48 flights.

DayFlightsOn time30+ minCancelled
Monday4868.8%20.8%2.1%
Tuesday4971.4%20.4%0.0%
Wednesday4981.6%10.2%0.0%
Thursday4862.5%20.8%0.0%
Friday4875.0%14.6%0.0%
Saturday4379.1%7.0%0.0%
Sunday4852.1%25.0%2.1%

Which airline was most reliable for LAS to BUF?

Only Southwest Airlines met the LAS-to-BUF airline threshold: 70.0% of 333 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines33370.0%17.1%0.6%

Which month was most reliable for LAS to BUF?

Among qualifying LAS-to-BUF month results, February 2026 had the highest on-time rate: 85.2% of 27 flights. July 2025 was lowest at 62.9% across 35 flights.

MonthFlightsOn time30+ minCancelled
July 20253562.9%34.3%0.0%
August 20253271.9%25.0%0.0%
September 20253066.7%13.3%0.0%
October 20253177.4%16.1%0.0%
November 20252867.9%21.4%0.0%
December 20252965.5%20.7%0.0%
January 20262774.1%3.7%3.7%
February 20262785.2%11.1%3.7%
March 20262774.1%11.1%0.0%
April 20262965.5%3.4%0.0%
May 20263164.5%19.4%0.0%

What drove LAS to BUF delay minutes?

Airline was the largest recorded LAS-to-BUF delay category, accounting for 46.3% of 5,182 BTS-attributed delay minutes during July 2025–June 2026.

Airline46.3%
Late aircraft46.1%
National airspace7.6%
Weather0.0%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.