$92 Cheap Flights from Philadelphia (PHL) to San Diego (SAN)

View $92 flight on Fri, Jul 18, 2025Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)

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Cheap Flights from Philadelphia to San Diego (PHL-SAN)

Prices were available within the past 7 days and start at $92 for one-way flights and $203 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Mon, Sep 22 - Sun, Sep 28
PHL
Philadelphia
SAN
San Diego
$203 Roundtrip, found 12 hours ago
$203
Roundtrip
found 12 hours ago
Select Spirit Airlines flight, departing Mon, Sep 22 from Philadelphia to San Diego, returning Sun, Sep 28, priced at $203 found 12 hours ago
Spirit Airlines
Fri, Sep 19 - Thu, Sep 25
PHL
Philadelphia
SAN
San Diego
$207 Roundtrip, found 12 hours ago
$207
Roundtrip
found 12 hours ago
Select Spirit Airlines flight, departing Fri, Sep 19 from Philadelphia to San Diego, returning Thu, Sep 25, priced at $207 found 12 hours ago
Spirit Airlines
Fri, Jul 18 - Wed, Jul 23
PHL
Philadelphia
SAN
San Diego
$216 Roundtrip, found 8 hours ago
$216
Roundtrip
found 8 hours ago
Select Spirit Airlines flight, departing Fri, Jul 18 from Philadelphia to San Diego, returning Wed, Jul 23, priced at $216 found 8 hours ago
Spirit Airlines
Thu, Aug 14 - Thu, Aug 21
PHL
Philadelphia
SAN
San Diego
$218 Roundtrip, found 6 hours ago
$218
Roundtrip
found 6 hours ago
Select Spirit Airlines flight, departing Thu, Aug 14 from Philadelphia to San Diego, returning Thu, Aug 21, priced at $218 found 6 hours ago
Frontier Airlines
Sat, Aug 16 - Fri, Aug 22
PHL
Philadelphia
SAN
San Diego
$219 Roundtrip, found 12 hours ago
$219
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sat, Aug 16 from Philadelphia to San Diego, returning Fri, Aug 22, priced at $219 found 12 hours ago
Frontier Airlines
Thu, Jul 17 - Thu, Jul 31
PHL
Philadelphia
SAN
San Diego
$220 Roundtrip, found 4 days ago
$220
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Jul 17 from Philadelphia to San Diego, returning Thu, Jul 31, priced at $220 found 4 days ago
Spirit Airlines
Mon, Sep 22 - Sun, Sep 28
PHL
Philadelphia
SAN
San Diego
$221 Roundtrip, found 12 hours ago
$221
Roundtrip
found 12 hours ago
Select Spirit Airlines flight, departing Mon, Sep 22 from Philadelphia to San Diego, returning Sun, Sep 28, priced at $221 found 12 hours ago
Delta
Sat, Sep 20 - Wed, Sep 24
PHL
Philadelphia
SAN
San Diego
$233 Roundtrip, found 10 hours ago
$233
Roundtrip
found 10 hours ago
Select Delta flight, departing Sat, Sep 20 from Philadelphia to San Diego, returning Wed, Sep 24, priced at $233 found 10 hours ago
JetBlue Airways
Wed, Aug 27 - Thu, Sep 4
PHL
Philadelphia
SAN
San Diego
$273 Roundtrip, found 1 hour ago
$273
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Wed, Aug 27 from Philadelphia to San Diego, returning Thu, Sep 4, priced at $273 found 1 hour ago
United
Wed, Oct 29 - Tue, Nov 4
PHL
Philadelphia
SAN
San Diego
$277 Roundtrip, found 1 hour ago
$277
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Oct 29 from Philadelphia to San Diego, returning Tue, Nov 4, priced at $277 found 1 hour ago

Find the cheapest month to fly from Philadelphia (PHL) to San Diego (SAN)

September is typically the cheapest month to fly

From $110 - $254 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to General Abelardo L. Rodriguez Intl. TIJ. Average driving time to city center is 26 minutes. Flights from $691
TIJ
General Abelardo L. Rodriguez Intl.
Average driving time to city center26 min
Flights from $691
Select flight to McClellan-Palomar CLD. Average driving time to city center is 38 minutes. Flights from $409
CLD
McClellan-Palomar
Average driving time to city center38 min
Flights from $409
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
Roundtrip price
$203
Distance
2365 mi
Average flight time
2 hours 36 mins

Philadelphia to San Diego Flights

The cheapest times to fly from Philadelphia to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to San Diego are during the month of September. You can find some of the cheapest flights from Philadelphia to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to San Diego

Sunday is one of the best days to book for cheap flights from Philadelphia to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $92 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN) cost?
Score affordable return tickets from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN) starting from $323. Book your seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving PHL on July 27 2025 and touching down at SAN. The price was last updated on June 30 2025 and has not changed since.
What is the cheapest month to fly from PHL to SAN?
To pick up a cheap ticket, look for direct flights from PHL to SAN departing in September. You can find a one-way American Airlines flight for $182 leaving on September 27 2025. This price is based on the cheapest direct flight found on Expedia for this route in the next 330 days. The price was last updated on June 30 2025 and remains unchanged.
Which airlines fly direct from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
When flying out of Philadelphia Intl. Airport (PHL), you can get on a direct flight to San Diego Intl. Airport (SAN) with American Airlines.
What is the cheapest airline that flies from PHL to SAN?
Book a flight from PHL to SAN with American Airlines. This airline currently has the lowest one-way fare on this route, starting from $198. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from PHL on September 25 2025. Prices were last updated on June 30 2025 and have not changed since.
How many flights per day from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
With an average of 2 direct flights that operate from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN) each day, you'll be jetting off in no time.
What are the most popular departure times for flights from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
More passengers fly between PHL and SAN at 8 AM than at any other time of day. Prefer a quieter experience? Pick a flight outside the busiest times and it's possible you'll save on your ticket as well.
What day of the week has the most flights from PHL to SAN?
Travel on a Friday if you're looking for the largest selection of flights from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN).
What is the earliest flight from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
Philadelphia Intl. Airport (PHL)'s first flight to San Diego Intl. Airport (SAN) leaves at approximately 8:50AM UTC-5. With a total journey time of 6h, you'll touch down at around 11:50AM UTC-8.
How long does it take to fly from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
The average flight time from PHL to SAN is 6 hours, covering a total distance of 2,400 mi.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
Choose a flight from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Diego from Philadelphia Intl. Airport (PHL)?
If you're traveling on a direct flight from Philadelphia Intl. Airport (PHL) to San Diego, San Diego Intl. Airport (SAN) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN) last-minute?
Waiting until just before your trip to book a ticket from PHL to SAN often results in higher prices. While you may find some last-minute deals, there's no guarantee. Keep your travel schedule open for a better chance of landing a bargain.
Is it cheaper to book a PHL to SAN flight and hotel package?
Compared with arranging hotels and flights separately, booking a PHL to SAN flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place will take the stress out of travel planning. Just pick your flights and select from our extensive range of stays, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to San Diego Intl. Airport (SAN)?
It's generally possible to cancel or reschedule your PHL to SAN flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.