Historical on-time performance
San Diego to Philadelphia
2,370 miData through May 2026Source: 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)
Cancelled1.5%of scheduled flights
based on 1,046 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 minCancel1.5%Flights1,046
Why flights run late
Delay causes
- Airline57%
- Weather10%
- Air traffic (NAS)8%
- Late aircraft24%
- Security1%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather94%
- Air traffic (NAS)6%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 16 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 SAN → PHL
All airlines · rolling 36 months (2023-06 .. 2026-05).
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 · 984 flights
- Mornings83% on time · p90 25 min · 1,944 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 89% on time.
- Tuesdays89% on time · p90 15 min · 422 flights
- Saturdays86% on time · p90 20 min · 420 flights
- Mondays86% on time · p90 15 min · 428 flights
- Sundays86% on time · p90 15 min · 428 flights
- Wednesdays86% on time · p90 25 min · 424 flights
- Thursdays84% on time · p90 25 min · 424 flights
- Fridays82% on time · p90 35 min · 429 flights
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