Historical on-time performance
St. Louis to Las Vegas
Flights on STL–LAS arrive on time 78% of the time over the last 12 months.
based on 1,803 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- Frontier AirlinesOn-time88%Medianon timep905 minCancel3.0%Flights33
- Southwest AirlinesOn-time78%Medianon timep9040 minCancel0.3%Flights1,770
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)18%
- Late aircraft49%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline67%
- Weather33%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 6 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 STL → LAS
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 — 90% on time.
- Mornings90% on time · p90 10 min · 2,060 flights
- Middays81% on time · p90 35 min · 847 flights
- Afternoons72% on time · p90 45 min · 1,040 flights
- Evenings69% on time · p90 60 min · 1,153 flights
- Overnights66% on time · p90 60 min · 1,124 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 83% on time.
- Tuesdays83% on time · p90 25 min · 828 flights
- Wednesdays81% on time · p90 25 min · 812 flights
- Saturdays78% on time · p90 35 min · 695 flights
- Mondays77% on time · p90 45 min · 975 flights
- Fridays76% on time · p90 40 min · 989 flights
- Thursdays76% on time · p90 40 min · 947 flights
- Sundays74% on time · p90 50 min · 978 flights
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