San Diego

$124+ Cheap flights from Philadelphia to San Diego (PHL - SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAN
Oct 11 — Oct 181
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Cheapflights Tip: The best prices from Philadelphia to San Diego are usually found in November or September, booked 79 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Philadelphia to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$270
(Frontier)

One-way from

$124
(Flightnetwork)

Popular in

December

Cheapest in

November

Average price

$395

Good round-trip deal

$373 or less

Good one-way deal

$249 or less
From Philadelphia to San Diego
One-way flight from Philadelphia to San Diego
Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from Philadelphia to San Diego.
Price to beat on a one-way flight from Philadelphia to San Diego.

Find flight deals from Philadelphia to San Diego

Cheapest flights from Philadelphia to San Diego
Explore the most affordable flight options available from Philadelphia to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Frontier deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/268:15 amPHL - SAN
1 stop13h 13mFrontier
Thu 10/306:25 amSAN - PHL
2 stops15h 34mFrontier
Deal found 9/11$270
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:15 amPHL - SAN
2 stops15h 13mFrontier
Mon 10/207:43 pmSAN - PHL
2 stops20h 01mFrontier
Deal found 9/9$271
This Cheapflightsfares deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:21 pmPHL - SAN
1 stop8h 05mSpirit Airlines
Fri 10/311:59 amSAN - PHL
1 stop7h 30mSpirit Airlines
Deal found 9/11$272
This Frontier deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:25 amPHL - SAN
2 stops13h 51mFrontier
Mon 10/66:49 pmSAN - PHL
2 stops20h 55mFrontier
Deal found 9/11$273
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:21 pmPHL - SAN
1 stop8h 05mMultiple Airlines
Mon 9/2912:33 pmSAN - PHL
2 stops18h 13mMultiple Airlines
Deal found 9/9$274
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/268:10 amPHL - SAN
1 stop13h 06mFrontier
Fri 10/310:20 amSAN - PHL
1 stop11h 37mFrontier
Deal found 9/10$275
This Orbitz deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/57:00 amPHL - SAN
1 stop9h 36mMultiple Airlines
Tue 10/77:58 amSAN - PHL
2 stops18h 42mMultiple Airlines
Deal found 9/11$276
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:19 amPHL - SAN
1 stop20h 31mFrontier
Sat 11/157:18 pmSAN - PHL
1 stop30h 31mFrontier
Deal found 9/10$277
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:21 pmPHL - SAN
1 stop8h 05mMultiple Airlines
Thu 10/212:04 pmSAN - PHL
1 stop9h 53mMultiple Airlines
Deal found 9/9$278
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:42 amPHL - SAN
1 stop18h 43mMultiple Airlines
Sat 10/182:11 pmSAN - PHL
2 stops30h 48mMultiple Airlines
Deal found 9/9$279
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:00 pmPHL - SAN
2 stops9h 25mSouthwest
Tue 11/1810:30 amSAN - PHL
2 stops9h 05mSouthwest
Deal found 9/9$280
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:21 pmPHL - SAN
1 stop8h 05mSpirit Airlines
Sat 9/271:35 pmSAN - PHL
2 stops17h 11mSpirit Airlines
Deal found 9/9$281

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Philadelphia to San Diego that are best for you.

Fly from

Philadelphia

Fly to

San Diego

Route

Depart

Return

Price

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 10/14

5:25 am-9:30 am

1 stop7h 05m

San Diego

Sat 10/18

6:35 am-8:20 pm

1 stop10h 45m

$282

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 11/19

6:35 am-1:35 pm

2 stops10h 00m

San Diego

Mon 11/24

6:35 am-6:20 pm

1 stop8h 45m

$282

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 12/6

8:15 am-12:25 pm

1 stop7h 10m

San Diego

Sat 12/13

10:05 am-7:45 pm

1 stop6h 40m

$284

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sun 10/12

10:20 am-7:05 pm

1 stop11h 45m

San Diego

Tue 10/21

8:55 pm-9:33 am

1 stop9h 38m

$299

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 11/20

6:00 am-1:42 pm

1 stop10h 42m

San Diego

Wed 12/3

8:35 pm-8:36 am

1 stop9h 01m

$299

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 10/2

6:25 am-11:03 am

1 stop7h 38m

San Diego

Sun 10/5

9:03 pm-2:17 pm

2 stops38h 14m

$300

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 10/10

6:10 pm-11:05 pm

1 stop7h 55m

San Diego

Tue 10/14

6:25 pm-9:40 am

1 stop12h 15m

$322

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 11/19

4:03 pm-6:59 pm

Nonstop5h 56m

San Diego

Wed 11/26

6:30 am-2:44 pm

Nonstop5h 14m

$323

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 11/21

5:45 am-10:10 am

1 stop7h 25m

San Diego

Sat 12/6

6:25 am-4:30 pm

1 stop7h 05m

$331

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 10/23

6:35 pm-9:21 pm

Nonstop5h 46m

San Diego

Fri 10/24

9:28 am-5:50 pm

Nonstop5h 22m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 20 results
1
2

Best time to book a flight from Philadelphia to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to San Diego

How far ahead should I book a flight from Philadelphia to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to San Diego. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to San Diego, you should look to book at least 79 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Philadelphia to San Diego?

Currently, August is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $286). Flying from Philadelphia to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to SAN?

Find hourly flight availability from Philadelphia to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to San Diego at noon. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Philadelphia to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to San Diego. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Philadelphia to San Diego flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Philadelphia to San Diego, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
8.0
Very good

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from Philadelphia to San Diego?

    If you wish to fly to San Diego from Philadelphia, then you need to book flights from Philadelphia to San Diego. There are 6 flights from Philadelphia (PHL) to San Diego (SAN) per day to choose from. Flights to San Diego from Philadelphia are available from 6 different airlines, which means you should have some options if you want to compare airfare deals. 5h 42m is how long a nonstop flight from Philadelphia to San Diego typically takes.

  • How long is the flight from Philadelphia to San Diego?

    Southwest and JetBlue can get you from Philadelphia to San Diego in just under 7h 05m. Your travel time can differ by up to 4h 40m. The distance from Philadelphia to San Diego is about 2364 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Philadelphia to San Diego round-trip?

    According to our current data, Frontier ($140), Spirit Airlines ($143), and Delta ($143) offers the cheapest pricing from Philadelphia to San Diego. Frontier is priced at 66% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to San Diego one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $132. Frontier flights start at $147 while deals on JetBlue start at $150 one-way.

  • What are the most reliable airlines from Philadelphia to San Diego?

    No one likes to see their flight delayed. When booking a flight from Philadelphia to San Diego consider choosing American Airlines (74%), British Airways (68%) or Qatar Airways (65%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Philadelphia to San Diego?

    Looking for the cheapest flight from Philadelphia to San Diego? While on average our users pay $434, our data indicates the cheapest price to be $133. The most popular route (Philadelphia - San Diego), is priced around $202.

  • Where are the most common layover locations when flying from Philadelphia to San Diego?

  • What are some popular things to do or see while on a layover in Las Vegas?

    Las Vegas travelers tend to visit Fremont Street Experience, Fountains of Bellagio, and The Colosseum at Caesars Palace more than anywhere else. Fremont Street Experience, Fountains of Bellagio, and The Colosseum at Caesars Palace are located about 5.9 mi, 2.3 mi, and 2.6 mi, respectively from Las Vegas Harry Reid Intl. Those on a layover in Las Vegas in need of a rental car can book one at Las Vegas Harry Reid Intl for about $52.

  • Where are the least popular layover locations for Philadelphia to San Diego flights?

  • Can I find deals for flights from Philadelphia to San Diego that include hotel bookings?

    Yes. In addition to deals on Philadelphia to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to San Diego.

  • Can I find deals for business class flights from Philadelphia to San Diego?

    Yes. Cheapflights offers flight deals from Philadelphia to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $286). Flying from Philadelphia to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Philadelphia to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Philadelphia to San Diego

Discover the top 6 airlines that operate flights from Philadelphia to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$228FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$143Average$252FlexibilityNo cancel feeOn-time65%
DeltaCheapest$143Average$333FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$223Average$427FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$295Average$445FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$308Average$491FlexibilityNo cancel feeOn-time63%

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