Historical on-time performance
Las Vegas to Buffalo
1,987 miData through Dec 2025Source: US DOT · BTS
Flights on LAS–BUF arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 298 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time74%Medianon timep9050 minCancel0.0%Flights298
Why flights run late
Delay causes
- Airline47%
- Weather0%
- Air traffic (NAS)9%
- Late aircraft41%
- Security3%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LAS → BUF
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 46% to 82% on time.
- Mornings82% on time · p90 30 min · 246 flights
- Middays78% on time · p90 40 min · 397 flights
- Afternoons61% on time · p90 60 min · 148 flights · limited
- Evenings46% on time · p90 85 min · 65 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 55% to 87% on time.
- Wednesdays87% on time · p90 20 min · 113 flights · limited
- Tuesdays82% on time · p90 30 min · 114 flights · limited
- Saturdays78% on time · p90 35 min · 142 flights · limited
- Mondays75% on time · p90 35 min · 122 flights · limited
- Fridays71% on time · p90 65 min · 121 flights · limited
- Thursdays68% on time · p90 45 min · 120 flights · limited
- Sundays55% on time · p90 50 min · 127 flights · limited
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