Las Vegas (LAS) to Buffalo (BUF): On-Time Performance
Data through July 2026
Las Vegas (LAS) to Buffalo (BUF) is a thinner route than most in this dataset — 302 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 75% arrived on time.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 0.83
- last 12 months
- Duration
- 4h 18m
- scheduled
- Distance
- 1,986 mi
Monthly on-time trend
Best time to fly from LAS to BUF
Aim for departures around 9 a.m. (92% on-time); avoid 6 p.m. departures (50%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 16 min |
| Tuesday | 82% | 13 min |
| Wednesdaybest | 86% | 7 min |
| Thursday | 68% | 18 min |
| Friday | 76% | 19 min |
| Saturday | 81% | 8 min |
| Sunday | 58% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations45%
- National airspace system11%
- Security2%
Frequently asked questions
- How often are flights from LAS to BUF delayed?
- 25% of LAS–BUF flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 15 minutes.
- What is the best time of day to fly from LAS to BUF?
- Departures around 9 a.m. have the best record (92% on-time), while departures around 6 p.m. have the worst (50%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LAS to BUF?
- The scheduled LAS–BUF flight time averages 4h 18m over 1,986 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are LAS to BUF flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from LAS to BUF?
- June 2025 was the roughest month in this dataset, with only 59% of arrivals on time. The best was January 2025 at 94%. If your dates are flexible, that 35-point gap is worth planning around.
Explore related pages
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Related guides
Based on 718 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.