Historical on-time performance
Des Moines to Las Vegas
1,216 miData through Dec 2025Source: US DOT · BTS
Flights on DSM–LAS arrive on time 86% of the time over the last 12 months.
On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 337 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time86%Medianon timep9020 minCancel0.6%Flights337
Why flights run late
Delay causes
- Airline39%
- Weather13%
- Air traffic (NAS)15%
- 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 DSM → LAS
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 67% to 85% on time.
- Middays85% on time · p90 20 min · 820 flights
- Mornings84% on time · p90 25 min · 193 flights · limited
- Overnights72% on time · p90 60 min · 50 flights · limited
- Afternoons67% on time · p90 65 min · 509 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 84% on time.
- Tuesdays84% on time · p90 25 min · 128 flights · limited
- Wednesdays83% on time · p90 25 min · 155 flights · limited
- Saturdays82% on time · p90 25 min · 154 flights · limited
- Mondays80% on time · p90 50 min · 274 flights
- Sundays77% on time · p90 35 min · 316 flights
- Fridays77% on time · p90 45 min · 275 flights
- Thursdays72% on time · p90 50 min · 279 flights
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