Historical on-time performance
Las Vegas to St. Louis
Flights on LAS–STL arrive on time 79% of the time over the last 12 months.
based on 1,809 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-time91%Medianon timep905 minCancel0.0%Flights33
- Southwest AirlinesOn-time78%Medianon timep9040 minCancel0.2%Flights1,776
Why flights run late
Delay causes
- Airline39%
- Weather1%
- Air traffic (NAS)10%
- Late aircraft51%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline33%
- Weather67%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 3 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 → STL
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 — 91% on time.
- Mornings91% on time · p90 10 min · 2,485 flights
- Middays75% on time · p90 35 min · 1,057 flights
- Afternoons69% on time · p90 50 min · 1,209 flights
- Evenings67% on time · p90 60 min · 1,258 flights
- Overnights59% on time · p90 65 min · 231 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 85% on time.
- Wednesdays85% on time · p90 25 min · 825 flights
- Saturdays84% on time · p90 20 min · 688 flights
- Tuesdays84% on time · p90 25 min · 834 flights
- Mondays76% on time · p90 40 min · 973 flights
- Fridays75% on time · p90 45 min · 988 flights
- Thursdays73% on time · p90 45 min · 950 flights
- Sundays73% on time · p90 40 min · 982 flights
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