Historical on-time performance
Miami to Las Vegas
2,175 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–LAS arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 1,512 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.
- Spirit AirlinesOn-time72%Medianon timep9090 minCancel0.0%Flights92
- American AirlinesOn-time72%Medianon timep9055 minCancel0.4%Flights1,420
Why flights run late
Delay causes
- Airline38%
- Weather5%
- Air traffic (NAS)25%
- Late aircraft32%
- 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 MIA → 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 60% to 82% on time.
- Mornings82% on time · p90 25 min · 1,451 flights
- Middays77% on time · p90 60 min · 105 flights · limited
- Evenings63% on time · p90 85 min · 1,591 flights
- Overnights62% on time · p90 80 min · 1,127 flights
- Afternoons60% on time · p90 85 min · 639 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 64% to 72% on time.
- Tuesdays72% on time · p90 55 min · 685 flights
- Saturdays72% on time · p90 60 min · 696 flights
- Wednesdays71% on time · p90 60 min · 689 flights
- Mondays69% on time · p90 70 min · 719 flights
- Fridays66% on time · p90 65 min · 717 flights
- Sundays65% on time · p90 70 min · 700 flights
- Thursdays64% on time · p90 75 min · 707 flights
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