Historical on-time performance
Las Vegas to San Francisco
Flights on LAS–SFO arrive on time 65% of the time over the last 12 months.
based on 6,041 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- United AirlinesOn-time70%Medianon timep9055 minCancel0.4%Flights2,733
- Alaska AirlinesOn-time68%Medianon timep9055 minCancel1.2%Flights1,133
- Frontier AirlinesOn-time65%Medianon timep9070 minCancel1.4%Flights866
- Southwest AirlinesOn-time53%Median10 minp9070 minCancel0.5%Flights1,309
Why flights run late
Delay causes
- Airline16%
- Weather1%
- Air traffic (NAS)51%
- Late aircraft31%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline55%
- Weather27%
- Air traffic (NAS)18%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 44 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LAS → SFO
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 74% on time.
- Mornings74% on time · p90 40 min · 5,625 flights
- Middays71% on time · p90 50 min · 4,195 flights
- Afternoons67% on time · p90 60 min · 2,735 flights
- Overnights58% on time · p90 70 min · 2,106 flights
- Evenings57% on time · p90 90 min · 2,966 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 63% to 75% on time.
- Saturdays75% on time · p90 40 min · 2,349 flights
- Tuesdays74% on time · p90 40 min · 2,243 flights
- Wednesdays71% on time · p90 50 min · 2,270 flights
- Mondays64% on time · p90 60 min · 2,668 flights
- Sundays63% on time · p90 65 min · 2,708 flights
- Fridays63% on time · p90 70 min · 2,707 flights
- Thursdays63% on time · p90 70 min · 2,682 flights
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