Historical on-time performance
Miami to Philadelphia
1,013 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–PHL arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 2,762 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-time76%Medianon timep9050 minCancel1.4%Flights2,489
- Frontier AirlinesOn-time76%Medianon timep9050 minCancel1.4%Flights212
- Spirit AirlinesOn-time74%Medianon timep9040 minCancel1.6%Flights61
Why flights run late
Delay causes
- Airline40%
- Weather6%
- Air traffic (NAS)13%
- Late aircraft41%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MIA → PHL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 20 min · 3,010 flights
- Middays74% on time · p90 60 min · 884 flights
- Afternoons67% on time · p90 70 min · 1,687 flights
- Evenings66% on time · p90 80 min · 1,729 flights
- Overnights64% on time · p90 80 min · 2,096 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 76% on time.
- Tuesdays76% on time · p90 55 min · 1,251 flights
- Wednesdays75% on time · p90 55 min · 1,269 flights
- Mondays74% on time · p90 65 min · 1,369 flights
- Fridays74% on time · p90 60 min · 1,400 flights
- Thursdays73% on time · p90 65 min · 1,375 flights
- Saturdays72% on time · p90 55 min · 1,334 flights
- Sundays69% on time · p90 70 min · 1,408 flights
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