$170 Cheap Delta flights Philadelphia (PHL) to San Diego (SAN)

View $170 flight on Wed, Jul 2, 2025Opens in a new window

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$170 Cheap Delta flights Philadelphia (PHL) to San Diego (SAN)

Prices were available within the past 7 days and start at $170 for one-way flights and $339 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Jul 2 - Sat, Jul 5
PHL
Philadelphia
SAN
San Diego
$339 Roundtrip, found 1 hour ago
$339
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Jul 2 from Philadelphia to San Diego, returning Sat, Jul 5, priced at $339 found 1 hour ago
Flights from Philadelphia (PHL) to San Diego (SAN)
Origin airport
Philadelphia Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Popular airline
JetBlue Airways
Distance
2365 mi
Average flight time
2 hours 33 mins

Frequently asked questions

How much is a Delta Air Lines flight from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
Set the "Price (lowest to highest)" filter on Expedia to look for cheap Delta Air Lines round-trip flights from $339 from PHL to SAN. Affordable one-way options from $170 are also available.**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.
What is the cheapest month to fly from PHL to SAN with Delta Air Lines?
Delta Air Lines flights to San Diego are often more affordable in the off-peak months of January and November. Whether you're searching for a return or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN) with Delta Air Lines?
Start searching one to three months ahead of your departure date to get cheaper fares on Delta Air Lines 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 versus 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.* Nail your timing, and you can enjoy significant savings on domestic journeys.*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.
Does Delta Air Lines fly nonstop from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
Simply enter your dates, click search and tick the "Nonstop" filter on Expedia to find any direct flights from PHL to SAN with Delta Air Lines or other carriers.
What is the earliest Delta Air Lines flight from PHL to SAN?
To find the earliest departures from PHL to SAN with Delta Air Lines, filter your search by "Early Morning" and "Morning." Choosing an early flight generally 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.
What airports does Delta Air Lines fly into in San Diego?
Delta Air Lines flights from Philadelphia Intl. Airport (PHL) to San Diego come in to San Diego Intl. Airport (SAN). This is the main entry point to this city.
Why fly with Delta Air Lines from PHL to SAN?
Delta Air Lines makes traveling from PHL to SAN enjoyable with a rewarding loyalty program and an excellent in-flight experience. You even have the chance to collect points with Delta SkyMiles. Remember to sign up to Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
It's generally possible to cancel or modify your flight, although additional charges may apply if you booked more than 24 hours ago. Want to keep your options open? Make use of Expedia's "Changes included" or "No cancel fee" filter to find flights that won't charge you extra if you need to adjust your plans. To update your itinerary, head to "Trips," select your flight and click on "Manage Booking" for more details.

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