$139 Cheap Delta flights San Diego (SAN) to Philadelphia (PHL)

View $139 flight on Wed, Oct 8, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$139 Cheap Delta flights San Diego (SAN) to Philadelphia (PHL)

Prices were available within the past 7 days and start at $139 for one-way flights and $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Aug 27 - Wed, Sep 3
SAN
San Diego
PHL
Philadelphia
$208 Roundtrip, found 5 hours ago
$208
Roundtrip
found 5 hours ago
Select Delta flight, departing Wed, Aug 27 from San Diego to Philadelphia, returning Wed, Sep 3, priced at $208 found 5 hours ago
Delta
Wed, Oct 1 - Sat, Oct 4
SAN
San Diego
PHL
Philadelphia
$277 Roundtrip, just found
$277
Roundtrip
just found
Select Delta flight, departing Wed, Oct 1 from San Diego to Philadelphia, returning Sat, Oct 4, priced at $277 just found
Flights from San Diego (SAN) to Philadelphia (PHL)
Origin airport
San Diego Intl.
Destination airport
Philadelphia 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
8 hours 22 mins

Frequently asked questions

How much is a Delta Air Lines flight from San Diego Intl. Airport (SAN) to Philadelphia Intl. Airport (PHL)?
Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap Delta Air Lines round-trip flights from $208 from SAN to PHL. Affordable one-way tickets from $139 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.
What is the cheapest month to fly from SAN to PHL with Delta Air Lines?
Search for one-way or return flights to Philadelphia in January or February. You could find lower fares with Delta Air Lines during these off-peak times.
What is the cheapest time to book flights from San Diego Intl. Airport (SAN) to Philadelphia Intl. Airport (PHL) with Delta Air Lines?
Search for cheap Delta Air Lines flights from San Diego Intl. Airport (SAN) to Philadelphia Intl. Airport (PHL) one to three months prior to your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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 San Diego Intl. Airport (SAN) to Philadelphia Intl. Airport (PHL)?
To find out if there's a direct trip from SAN to PHL with Delta Air Lines or any other airlines, check the "Nonstop" box when browsing for tickets.
What is the earliest Delta Air Lines flight from SAN to PHL?
Search Delta Air Lines's earliest flights from SAN to PHL by checking our "Early Morning" and "Morning" filters. Not only will you get to where you're going sooner, early departures also experience 20% fewer 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 Philadelphia?
Delta Air Lines flights from San Diego Intl. Airport (SAN) to Philadelphia arrive at Philadelphia Intl. Airport (PHL). This is the main gateway to this destination.
Why fly with Delta Air Lines from SAN to PHL?
Delta Air Lines makes traveling from SAN to PHL more enjoyable with a rewarding loyalty program and an excellent in-flight experience. You could even start collecting points with Delta SkyMiles. Remember to join our 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 San Diego Intl. Airport (SAN) to Philadelphia Intl. Airport (PHL)?
Depending on your fare type, a fee is typically charged if you cancel or change your flight more than 24 hours after it's confirmed. To secure tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes while searching for flights. For additional information on canceling or changing your reservation, go to "Trips," select your flight and tick "Manage Booking."

Explore a world of travel with Expedia

*Available to One Key members.