$66 Cheap Spirit Airlines flights Philadelphia (PHL) to San Diego (SAN)

Use the “Price (lowest to highest)” filter on Expedia to find cheap Spirit Airlines return flights from $131 from PHL to SAN. Affordable one-way options from $66 are available as well.**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.

January is one of the most affordable months to get away to San Diego with Spirit Airlines. You could also find fantastic deals on one-way and round-trip fares in November.

Start searching one to three months ahead of your departure date to find cheap fares on Spirit Airlines flights from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic flights.*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.

Enter your dates, click search and select the “Nonstop” filter on Expedia to browse any direct flights from PHL to SAN with Spirit Airlines or another carrier.

To find the earliest departures from PHL to SAN with Spirit Airlines, filter your results by “Morning” and “Early Morning.” Booking an early flight usually means you’re less likely to experience cancellations.**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.

Jump on a Spirit Airlines flight from Philadelphia Intl. Airport (PHL) to San Diego, and you’ll probably touch down at San Diego Intl. Airport (SAN). This is the airline’s main hub in this destination.

Fly from PHL to SAN with Spirit Airlines and enjoy a range of benefits including a rewarding loyalty program. When booking through Expedia as a Free Spirit and One Key™ member, you could also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can cancel or modify your flight, although there may be a charge if you made your booking over 24 hours ago. Want to keep your options open? Use Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t charge you extra if you have to revise your plans. To make modifications, head to “Trips,” select your flight and click on “Manage Booking” for more details.