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Best Time to Fly from San Francisco to Philadelphia
Real weather data for Philadelphia by month and real day-of-week fare patterns for this route — so "best time" here means something you can check, not a generic guess.
General booking pattern
Without route-specific fare history, the general industry pattern holds: mid-week flights — especially Tuesday and Wednesday — tend to be cheaper than weekend departures. This is general advice, not a fact about this specific route.
Weather in Philadelphia by month
Based on the last 3 years of real historical data. July runs warmest (32°C avg high). October runs driest (~52mm rain).
January
6° / -2°C
~95mm rain
February
9° / -1°C
~64mm rain
March
13° / 3°C
~126mm rain
April
19° / 8°C
~130mm rain
May
23° / 13°C
~101mm rain
June
29° / 18°C
~77mm rain
July
32° / 22°C
~108mm rain
August
29° / 19°C
~106mm rain
September
26° / 16°C
~84mm rain
October
21° / 10°C
~52mm rain
November
14° / 4°C
~69mm rain
December
7° / 0°C
~114mm rain
Nearby airports
Near San Francisco
- San Carlos Airport (SQL)16 km
- Metropolitan Oakland International Airport (OAK)18 km
- Norman Y. Mineta San Jose International Airport (SJC)49 km
Near Philadelphia
- New Castle Airport (ILG)38 km
- Trenton Mercer Airport (TTN)58 km
- Atlantic City International Airport (ACY)73 km
More about this route
FAQs — Best time to fly San Francisco to Philadelphia
We don't have a live fare history for this specific route yet — mid-week departures (Tuesday and Wednesday) are typically cheaper as a general industry pattern.