Historical on-time performance
Los Angeles to Miami
2,342 miData through Dec 2025Source: US DOT · BTS
Flights on LAX–MIA arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.1%of scheduled flights
based on 3,176 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.
- American AirlinesOn-time78%Medianon timep9035 minCancel0.1%Flights2,812
- Delta Air LinesOn-time77%Medianon timep9035 minCancel0.3%Flights364
Why flights run late
Delay causes
- Airline40%
- Weather0%
- Air traffic (NAS)20%
- Late aircraft39%
- Security1%
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 LAX → MIA
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 72% to 85% on time.
- Early mornings85% on time · p90 20 min · 321 flights
- Mornings82% on time · p90 25 min · 3,238 flights
- Overnights81% on time · p90 35 min · 3,069 flights
- Afternoons72% on time · p90 50 min · 227 flights
- Middays72% on time · p90 45 min · 3,524 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 82% on time.
- Tuesdays82% on time · p90 25 min · 1,493 flights
- Mondays80% on time · p90 35 min · 1,494 flights
- Wednesdays79% on time · p90 30 min · 1,486 flights
- Fridays78% on time · p90 35 min · 1,493 flights
- Thursdays77% on time · p90 35 min · 1,473 flights
- Saturdays76% on time · p90 40 min · 1,443 flights
- Sundays75% on time · p90 50 min · 1,498 flights
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