Fly from Philadelphia to San Diego for $252 round-trip on United.
Seen below, we found seats departing PHL on Wednesday, September 23, returning from SAN on Tuesday, September 29. Flights connect via Chicago ORD.
Other dates are also available on Tuesdays/Wednesdays/Saturdays, from August 25 through December 15.
For booking info, see our Fare Details.
Need a room in San Diego? Here's a look at what's available for the above dates on Hotelwatchdog.