Historical on-time performance
Miami to San Francisco
Flights on MIA–SFO arrive on time 73% of the time over the last 12 months.
based on 1,701 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.
- United AirlinesOn-time73%Medianon timep9055 minCancel0.2%Flights628
- American AirlinesOn-time73%Medianon timep9055 minCancel0.9%Flights1,073
Why flights run late
Delay causes
- Airline31%
- Weather4%
- Air traffic (NAS)32%
- Late aircraft32%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline9%
- Weather82%
- Air traffic (NAS)9%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 11 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 MIA → SFO
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 — 84% on time.
- Mornings84% on time · p90 25 min · 1,832 flights
- Afternoons69% on time · p90 85 min · 216 flights
- Evenings59% on time · p90 90 min · 2,464 flights
- Overnights58% on time · p90 85 min · 239 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 64% to 76% on time.
- Tuesdays76% on time · p90 45 min · 666 flights
- Fridays71% on time · p90 65 min · 700 flights
- Wednesdays70% on time · p90 55 min · 663 flights
- Saturdays70% on time · p90 70 min · 696 flights
- Mondays68% on time · p90 70 min · 690 flights
- Thursdays67% on time · p90 85 min · 685 flights
- Sundays64% on time · p90 80 min · 689 flights
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