Historical on-time performance
Buffalo to Las Vegas
1,987 miData through Dec 2025Source: US DOT · BTS
Flights on BUF–LAS arrive on time 87% of the time over the last 12 months.
On-time rate87%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.3%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-time87%Medianon timep9020 minCancel0.3%Flights298
Why flights run late
Delay causes
- Airline53%
- Weather0%
- Air traffic (NAS)14%
- Late aircraft33%
- Security0%
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 BUF → LAS
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 90% on time.
- Mornings90% on time · p90 10 min · 218 flights
- Middays80% on time · p90 25 min · 225 flights
- Afternoons75% on time · p90 40 min · 317 flights
- Evenings64% on time · p90 75 min · 122 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 84% on time.
- Saturdays84% on time · p90 20 min · 147 flights · limited
- Wednesdays83% on time · p90 25 min · 122 flights · limited
- Thursdays79% on time · p90 30 min · 120 flights · limited
- Mondays79% on time · p90 45 min · 122 flights · limited
- Fridays79% on time · p90 45 min · 121 flights · limited
- Tuesdays77% on time · p90 30 min · 123 flights · limited
- Sundays71% on time · p90 35 min · 127 flights · limited
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