$148 Cheap American Airlines flights Philadelphia (PHL) to San Diego (SAN)

You can find cheap round-trip American Airlines flights from $303 from PHL to SAN by filtering your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $148 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

For cheap American Airlines fares from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

The first flight from PHL to SAN with American Airlines departs at 8:50AM UTC-5. You'll touch down at 11:50AM UTC-8. The last American Airlines flight of the day takes off at 7:05PM UTC-5 and arrives at 10:08PM UTC-8. With 20% fewer cancellations for morning and mid-morning flights, starting your travel day early is typically the wisest option.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.