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

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

82.9% of 333 official scheduled BUF-to-LAS flights arrived on time; 8.4% 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 SIGNALLower disruption
82.9%arrived on time
8.4%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 late4.8%all scheduled flights
120+ minutes late1.2%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival-1.2 mincompleted flights

Which departure time was most reliable for BUF to LAS?

Among qualifying BUF-to-LAS departure window results, Early morning had the highest on-time rate: 89.7% of 174 flights. Afternoon was lowest at 76.1% across 109 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning17489.7%3.4%0.6%
Afternoon10976.1%13.8%0.0%

Which weekday was most reliable for BUF to LAS?

Among qualifying BUF-to-LAS weekday results, Wednesday had the highest on-time rate: 91.8% of 49 flights. Saturday was lowest at 74.4% across 43 flights.

DayFlightsOn time30+ minCancelled
Monday4877.1%10.4%4.2%
Tuesday4985.7%8.2%0.0%
Wednesday4991.8%4.1%0.0%
Thursday4885.4%6.2%0.0%
Friday4877.1%12.5%0.0%
Saturday4374.4%14.0%0.0%
Sunday4887.5%4.2%0.0%

Which airline was most reliable for BUF to LAS?

Only Southwest Airlines met the BUF-to-LAS airline threshold: 82.9% of 333 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines33382.9%8.4%0.6%

Which month was most reliable for BUF to LAS?

Among qualifying BUF-to-LAS month results, July 2025 had the highest on-time rate: 97.1% of 35 flights. January 2026 was lowest at 66.7% across 27 flights.

MonthFlightsOn time30+ minCancelled
July 20253597.1%2.9%0.0%
August 20253290.6%3.1%0.0%
September 20253093.3%3.3%0.0%
October 20253177.4%3.2%0.0%
November 20252875.0%17.9%0.0%
December 20252969.0%20.7%0.0%
January 20262766.7%11.1%3.7%
February 20262774.1%25.9%0.0%
March 20262777.8%3.7%3.7%
April 20262996.6%0.0%0.0%
May 20263193.5%3.2%0.0%

What drove BUF to LAS delay minutes?

Late aircraft was the largest recorded BUF-to-LAS delay category, accounting for 40.6% of 2,895 BTS-attributed delay minutes during July 2025–June 2026.

Airline39.2%
Late aircraft40.6%
National airspace20.2%
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.