Historical on-time performance
Los Angeles to Miami
2,342 miData through May 2026Source: US DOT · BTS
Flights on LAX–MIA arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 3,249 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesbestOn-time78%Medianon timep9035 minCancel0.6%Flights2,755
- Delta Air LinesOn-time72%Medianon timep9035 minCancel1.2%Flights494
Why flights run late
Delay causes
- Airline45%
- Weather0%
- Air traffic (NAS)18%
- Late aircraft37%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline41%
- Weather50%
- Air traffic (NAS)9%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 22 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 LAX → MIA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Early mornings are the most reliable time of day to fly this route — 87% on time.
- Early mornings87% on time · p90 20 min · 204 flights
- Mornings82% on time · p90 25 min · 3,303 flights
- Overnights80% on time · p90 30 min · 3,154 flights
- Afternoons73% on time · p90 50 min · 309 flights
- Middays72% on time · p90 45 min · 3,283 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 · 1,465 flights
- Wednesdays80% on time · p90 30 min · 1,454 flights
- Mondays79% on time · p90 30 min · 1,471 flights
- Fridays78% on time · p90 40 min · 1,487 flights
- Thursdays78% on time · p90 40 min · 1,475 flights
- Sundays76% on time · p90 50 min · 1,481 flights
- Saturdays75% on time · p90 35 min · 1,420 flights
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