Historical on-time performance
San Diego to Philadelphia
2,370 miData through Dec 2025Source: US DOT · BTS
Flights on SAN–PHL arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 1,036 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time85%Medianon timep9020 minCancel1.2%Flights1,036
Why flights run late
Delay causes
- Airline52%
- Weather11%
- Air traffic (NAS)9%
- Late aircraft26%
- 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 SAN → PHL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Overnights are the most reliable time of day to fly this route — 91% on time.
- Overnights91% on time · p90 5 min · 1,022 flights
- Mornings83% on time · p90 25 min · 1,831 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 83% to 89% on time.
- Tuesdays89% on time · p90 15 min · 409 flights
- Saturdays87% on time · p90 15 min · 402 flights
- Mondays87% on time · p90 15 min · 414 flights
- Sundays87% on time · p90 15 min · 411 flights
- Wednesdays85% on time · p90 25 min · 412 flights
- Thursdays84% on time · p90 25 min · 405 flights
- Fridays83% on time · p90 30 min · 410 flights
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