$172 Cheap Sun Country Airlines flights Philadelphia (PHL) to San Diego (SAN)

Scoring cheap one-way Sun Country Airlines flights from PHL to SAN from $172 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $397 for your next break.**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.

Browse for return or one-way flights to San Diego in January or November. You could find a cheap fare with Sun Country Airlines during these off-peak months.

Start searching one to three months before your departure to score cheap fares on Sun Country 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 reduce 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 the timing right, 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.

To find out if there’s a direct route from PHL to SAN with Sun Country Airlines or another carrier, use our “Nonstop” filter when looking for flights.

Filter your results by “Early Morning” and “Morning” to see the earliest departures from PHL to SAN. Leaving early means you’re 20% 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.

San Diego Intl. Airport (SAN) is the primary San Diego gateway for Sun Country Airlines flights from Philadelphia Intl. Airport (PHL).

You’re allowed 1 cabin bag weighing up to 33 lb with dimensions no larger than 23 inches x 10 inches x 15 inches. You can also take a small personal item onboard when flying standard economy from PHL to SAN with Sun Country Airlines. Luggage allowances can differ by cabin class and ticket type, so check Sun Country Airlines’s website to avoid extra fees at the airport.

Heading from PHL to SAN with Sun Country Airlines comes with plenty of perks, such as top-tier customer service and a rewarding loyalty program. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That’s in addition to the Sun Country Rewards points you can earn with Sun Country Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of ticket you purchased, a fee will generally apply if you cancel or reschedule your flight more than 24 hours after it’s been confirmed. To secure flexible plane tickets, select our “Changes included” and “No cancel fee” boxes when searching for flights. For more information on modifying or canceling your reservation, head to “Trips,” select your flight and tick “Manage Booking.”