Fly from San Diego to Philadelphia for $178 round-trip, including all taxes, on United.
We found seats departing SAN on October 1, and returning from PHL on October 8. Other dates also available for travel, from September through December.
Similar United fares available this morning to/from Philadelphia and plenty of other cities. For a complete list of these fares, visit our Philadelphia PHL fare page.
And you'll find booking details for San Diego to Philadelphia here.