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Cheap flights from San Diego to Philadelphia from £125

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 16/12. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — PHL
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Diego to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Philadelphia (PHL). 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 14 November 2025.

Round-trip from

£245

One-way from

£125

Popular in

December

Cheapest in

October

Average price

£381
United Airlines
  • United Airlines
  • 14/1-18/1
  • 2 total stops
  • 17h 15m total
  • San Diego to Philadelphia
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United Airlines
  • United Airlines
  • 16/12
  • 1 total stop
  • 8h 56m total
  • San Diego to Philadelphia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from San Diego to Philadelphia

Enter your travel dates to find the best prices.

Cheapest flights from San Diego to Philadelphia
Explore the most affordable flight options available from San Diego to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Sun 14/1207:45SAN - PHL
1 stop8h 56mUnited Airlines
Wed 17/1215:35PHL - SAN
1 stop8h 10mUnited Airlines
Deal found 12/11£248
Tue 9/1211:36SAN - PHL
1 stop8h 34mDelta
Tue 16/1214:24PHL - SAN
1 stop9h 54mDelta
Deal found 13/11£260
Tue 2/1210:23SAN - PHL
1 stop9h 22mUnited Airlines
Wed 3/1217:07PHL - SAN
1 stop8h 23mUnited Airlines
Deal found 12/11£264
Tue 9/1207:00SAN - PHL
2 stops11h 40mSouthwest
Tue 16/1214:45PHL - SAN
2 stops9h 05mSouthwest
Deal found 13/11£267
Tue 9/1206:40SAN - PHL
2 stops12h 00mSouthwest
Wed 10/1216:00PHL - SAN
2 stops9h 25mSouthwest
Deal found 12/11£268
Fri 12/1220:59SAN - PHL
1 stop29h 47mAlaska Airlines
Tue 27/119:06PHL - SAN
1 stop18h 01mAlaska Airlines
Deal found 13/11£277
Tue 9/1209:10SAN - PHL
2 stops17h 36mAlaska Airlines
Mon 15/1207:06PHL - SAN
2 stops12h 24mAlaska Airlines
Deal found 13/11£277
Wed 31/1222:30SAN - PHL
1 stop7h 55mDelta
Wed 7/112:41PHL - SAN
1 stop9h 19mDelta
Deal found 13/11£289
Wed 17/1214:19SAN - PHL
1 stop7h 32mDelta
Thu 25/1206:05PHL - SAN
1 stop10h 00mDelta
Deal found 13/11£291

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Diego to Philadelphia 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 858,174 searches. Data last updated 14 November 2025.
Use the filters below to find and compare flights from San Diego to Philadelphia that are best for you.

Fly from

San Diego

Fly to

Philadelphia

Route

Depart

Return

Price

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 11/3

22:30-10:27

1 stop8h 57m

Philadelphia

Wed 18/3

06:10-11:38

1 stop8h 28m

£245

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 22/1

11:08-23:32

2 stops9h 24m

Philadelphia

Mon 26/1

12:40-18:36

1 stop8h 56m

£252

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Tue 2/12

10:23-22:45

1 stop9h 22m

Philadelphia

Wed 3/12

17:07-22:30

1 stop8h 23m

£264

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Mon 2/2

08:35-20:20

2 stops8h 45m

Philadelphia

Sat 7/2

12:40-20:20

2 stops10h 40m

£280

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 31/12

22:30-09:25

1 stop7h 55m

Philadelphia

Wed 7/1

12:41-19:00

1 stop9h 19m

£289

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Tue 9/12

07:15-05:46

2 stops19h 31m

Philadelphia

Mon 15/12

18:54-10:13

1 stop18h 19m

£290

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 17/12

14:19-00:51

1 stop7h 32m

Philadelphia

Thu 25/12

06:05-13:05

1 stop10h 00m

£291

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 22/1

09:40-22:00

2 stops9h 20m

Philadelphia

Mon 26/1

05:40-12:25

2 stops9h 45m

£293

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 11/12

07:00-21:40

2 stops11h 40m

Philadelphia

Mon 15/12

06:35-13:20

2 stops9h 45m

£293

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Tue 2/12

12:08-22:45

1 stop7h 37m

Philadelphia

Thu 4/12

06:15-12:50

1 stop9h 35m

£295

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 22 results
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Best time to book a flight from San Diego to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from San Diego with our price prediction graph.
Estimated return 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 San Diego to Philadelphia

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

Use this chart to determine the optimal time to book a return flight from San Diego to Philadelphia. Price data was last updated on 7 November 2025.

To ensure you get the cheapest price possible for a flight from San Diego to Philadelphia, you should look to book at least 21 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 San Diego to Philadelphia?

Currently, June is the cheapest month in which you can book a flight from San Diego to Philadelphia (average of £59). Flying from San Diego to Philadelphia in December is currently the most expensive (average of £112). 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 SAN to PHL?

Find hourly flight availability from San Diego to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 November 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Philadelphia as you normally would.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this San Diego to Philadelphia flight route?

    The San Diego to Philadelphia flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Airlines like United Airlines, Southwest, and Alaska Airlines fly from San Diego to Philadelphia in about 8h 57m. The time it takes to get you to your destination can typically vary by up to 8h 39m. There are 2364 mi between San Diego and Philadelphia. This flight may include one or multiple stops.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Diego to Philadelphia on time: American Airlines (91%), Iberia (89%), British Airways (89%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Philadelphia 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 San Diego to Philadelphia?

    Currently, June is the cheapest month in which you can book a flight from San Diego to Philadelphia (average of £59). Flying from San Diego to Philadelphia in December is currently the most expensive (average of £112). 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

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How does Cheapflights help users find flights from San Diego to Philadelphia?

When you search for this flight from San Diego to Philadelphia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from San Diego to Philadelphia?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Philadelphia from San Diego.

Can Cheapflights find flights from San Diego to Philadelphia with no change fees?

Yes! Cheapflights helps users easily find flights from San Diego to Philadelphia with no change fees.

Can Cheapflights notify me if prices for flights from San Diego to Philadelphia become cheaper?

Yes, Cheapflights offers price alerts on San Diego to Philadelphia flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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