How many flights depart from Philadelphia to San Diego on average per week?

32 flights are operational weekly from Philadelphia to San Diego as of September 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.

What is the cheapest airline that flies from Philadelphia to San Diego?

Southwest is the most popular carrier operating from Philadelphia to San Diego

How many flights depart from Philadelphia to San Diego on average per day?

As of September 2026, there are 4 flights per day flying from Philadelphia to San Diego. The most common time of day flights depart is 18:00, with 61% of flights taking off in the evening.

When did momondo last update prices for flights from Philadelphia Airport to San Diego Airport?

Prices for flights from Philadelphia Airport to San Diego Airport are refreshed on a daily basis.

How old do you have to be to fly from Philadelphia Airport to San Diego Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

R2 518 Cheap Flights from Philadelphia to San Diego in 2026/27

Find the cheapest flights from Philadelphia to San Diego

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

18:35 - 22:55PHL Philadelphia-SAN San Diego

7h 20m1 stop Dallas Love Field

12:35 - 23:30SAN San Diego-PHL Philadelphia

7h 55m1 stop Denver Intl

R5 719Southwest

Mon, Nov 2 - Tue, Nov 10

7:02 - 18:43PHL Philadelphia-SAN San Diego

14h 41m2 stops Seattle/Tacoma Intl San Jose

10:05 - 5:41SAN San Diego-PHL Philadelphia

16h 36m2 stops Sacramento Intl Seattle/Tacoma Intl

R5 768Alaska Airlines

Sat, Oct 17 - Sat, Oct 24

17:10 - 23:15PHL Philadelphia-SAN San Diego

9h 05m2 stops Dallas Love Field Las Vegas Harry Reid Intl

10:55 - 23:30SAN San Diego-PHL Philadelphia

9h 35m2 stops Phoenix Sky Harbor Intl Denver Intl

R5 800Southwest

Thu, Oct 29 - Wed, Nov 4

18:35 - 22:55PHL Philadelphia-SAN San Diego

7h 20m1 stop Dallas Love Field

10:55 - 23:30SAN San Diego-PHL Philadelphia

9h 35m2 stops Phoenix Sky Harbor Intl Denver Intl

R5 817Southwest

Mon, Nov 2 - Tue, Nov 10

13:50 - 23:50PHL Philadelphia-SAN San Diego

13h 00m1 stop Chicago Midway

13:20 - 22:55SAN San Diego-PHL Philadelphia

6h 35m1 stop Denver Intl

R5 882Southwest

Thu, Nov 5 - Sat, Nov 7

16:50 - 7:25PHL Philadelphia-SAN San Diego

17h 35m2 stops Dallas Love Field Oakland

6:30 - 16:10SAN San Diego-PHL Philadelphia

6h 40m1 stop Dallas Love Field

R5 898Southwest

Sat, Feb 20 - Sat, Feb 27

5:00 - 12:15PHL Philadelphia-SAN San Diego

10h 15m2 stops Denver Intl Reno

6:35 - 16:15SAN San Diego-PHL Philadelphia

6h 40m1 stop Denver Intl

R5 947Southwest

Thu, Nov 5 - Tue, Nov 10

5:25 - 12:20PHL Philadelphia-SAN San Diego

9h 55m2 stops Denver Intl Reno

13:05 - 1:10SAN San Diego-PHL Philadelphia

9h 05m2 stops Las Vegas Harry Reid Intl Denver Intl

R5 963Southwest

Sat, Oct 17 - Thu, Oct 22

7:02 - 21:50PHL Philadelphia-SAN San Diego

17h 48m2 stops Seattle/Tacoma Intl Sacramento Intl

10:54 - 5:32SAN San Diego-PHL Philadelphia

15h 38m2 stops Sacramento Intl Seattle/Tacoma Intl

R5 995Alaska Airlines

Sat, Nov 7 - Thu, Nov 12

11:45 - 18:15PHL Philadelphia-SAN San Diego

9h 30m1 stop Chicago Midway

22:40 - 10:45SAN San Diego-PHL Philadelphia

9h 05m1 stop Chicago Midway

R6 012Southwest

Tue, Dec 8 - Fri, Dec 11

Cheap last-minute flights

Enter your travel dates to find the best prices.

17:10 - 22:05PHL Philadelphia-SAN San Diego

7h 55m1 stop Denver Intl

22:40 - 11:10SAN San Diego-PHL Philadelphia

9h 30m1 stop Chicago Midway

R8 952Southwest

Tue, Sep 22 - Wed, Sep 23

14:45 - 21:05PHL Philadelphia-SAN San Diego

9h 20m2 stops Lambert-St Louis Las Vegas Harry Reid Intl

13:40 - 23:55SAN San Diego-PHL Philadelphia

7h 15m1 stop Denver Intl

R9 034Southwest

Tue, Sep 22 - Wed, Sep 23

10:45 - 18:20PHL Philadelphia-SAN San Diego

10h 35m2 stops Chicago Midway Houston Hobby

8:35 - 20:40SAN San Diego-PHL Philadelphia

9h 05m2 stops Phoenix Sky Harbor Intl Denver Intl

R9 115Southwest

Tue, Sep 22 - Wed, Sep 23

12:35 - 16:50PHL Philadelphia-SAN San Diego

7h 15m1 stop Denver Intl

12:55 - 0:15SAN San Diego-PHL Philadelphia

8h 20m1 stop Denver Intl

R9 229Southwest

Wed, Sep 23 - Sun, Sep 27

15:05 - 20:55PHL Philadelphia-SAN San Diego

8h 50m2 stops Chicago Midway Phoenix Sky Harbor Intl

12:55 - 0:15SAN San Diego-PHL Philadelphia

8h 20m1 stop Denver Intl

R9 310Southwest

Wed, Sep 23 - Sun, Sep 27

7:55 - 14:40PHL Philadelphia-SAN San Diego

9h 45m2 stops Chicago Midway Phoenix Sky Harbor Intl

13:15 - 1:10SAN San Diego-PHL Philadelphia

8h 55m2 stops Phoenix Sky Harbor Intl Denver Intl

R9 407Southwest

Tue, Sep 22 - Thu, Oct 15

15:05 - 20:55PHL Philadelphia-SAN San Diego

8h 50m2 stops Chicago Midway Phoenix Sky Harbor Intl

6:20 - 18:05SAN San Diego-PHL Philadelphia

8h 45m2 stops Denver Intl Chicago Midway

R9 765Southwest

Wed, Sep 23 - Sun, Sep 27

12:35 - 16:50PHL Philadelphia-SAN San Diego

7h 15m1 stop Denver Intl

12:30 - 22:20SAN San Diego-PHL Philadelphia

6h 50m1 stop Lambert-St Louis

R9 797Southwest

Wed, Sep 23 - Fri, Sep 25

15:05 - 21:05PHL Philadelphia-SAN San Diego

9h 00m2 stops Chicago Midway Las Vegas Harry Reid Intl

6:45 - 17:55SAN San Diego-PHL Philadelphia

8h 10m1 stop Chicago Midway

R9 879Southwest

Wed, Sep 23 - Thu, Sep 24

8:05 - 14:35PHL Philadelphia-SAN San Diego

9h 30m2 stops Chicago Midway Phoenix Sky Harbor Intl

9:50 - 23:50SAN San Diego-PHL Philadelphia

11h 00m2 stops Omaha Eppley Airfield Orlando

R9 895Southwest

Sat, Sep 26 - Sun, Oct 4

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Southwest flights from Philadelphia to San Diego

Our best Southwest deals on Philadelphia to San Diego flight tickets

Southwest

Nov 2

PHL18:35Philadelphia

7h 20m

1 stop

SAN22:55San Diego

Nov 10

SAN12:35San Diego

7h 55m

1 stop

PHL23:30Philadelphia

R5 719

Southwest

Oct 29

PHL17:10Philadelphia

9h 05m

2 stops

SAN23:15San Diego

Nov 4

SAN10:55San Diego

9h 35m

2 stops

PHL23:30Philadelphia

R5 800

Southwest

Nov 2

PHL18:35Philadelphia

7h 20m

1 stop

SAN22:55San Diego

Nov 10

SAN10:55San Diego

9h 35m

2 stops

PHL23:30Philadelphia

R5 817

Alaska Airlines flights from Philadelphia to San Diego

Our best Alaska Airlines deals on Philadelphia to San Diego flight tickets

Alaska Airlines

Oct 17

PHL7:02Philadelphia

14h 41m

2 stops

SAN18:43San Diego

Oct 24

SAN10:05San Diego

16h 36m

2 stops

PHL5:41Philadelphia

R5 768

Alaska Airlines

Nov 7

PHL7:02Philadelphia

17h 48m

2 stops

SAN21:50San Diego

Nov 12

SAN10:54San Diego

15h 38m

2 stops

PHL5:32Philadelphia

R5 995

Alaska Airlines

Nov 12

PHL7:02Philadelphia

12h 35m

2 stops

SAN16:37San Diego

Nov 17

SAN8:02San Diego

18h 30m

2 stops

PHL5:32Philadelphia

R6 028

momondo Fare Finder

Use the filters below to find and compare flights from Philadelphia to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Mon 2/11

18:35-22:55

1 stop7h 20m

San Diego

Tue 10/11

12:35-23:30

1 stop7h 55m

R5 719

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Sat 17/10

7:02-18:43

2 stops14h 41m

San Diego

Sat 24/10

10:05-5:41

2 stops16h 36m

R5 768

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Thu 29/10

17:10-23:15

2 stops9h 05m

San Diego

Wed 4/11

10:55-23:30

2 stops9h 35m

R5 800

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Mon 2/11

18:35-22:55

1 stop7h 20m

San Diego

Tue 10/11

10:55-23:30

2 stops9h 35m

R5 817

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Thu 5/11

13:50-23:50

1 stop13h 00m

San Diego

Sat 7/11

13:20-22:55

1 stop6h 35m

R5 882

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Sat 20/2

16:50-7:25

2 stops17h 35m

San Diego

Sat 27/2

6:30-16:10

1 stop6h 40m

R5 898

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Thu 5/11

5:00-12:15

2 stops10h 15m

San Diego

Tue 10/11

6:35-16:15

1 stop6h 40m

R5 947

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Sat 17/10

5:25-12:20

2 stops9h 55m

San Diego

Thu 22/10

13:05-1:10

2 stops9h 05m

R5 963

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Sat 7/11

7:02-21:50

2 stops17h 48m

San Diego

Thu 12/11

10:54-5:32

2 stops15h 38m

R5 995

PhiladelphiaSan Diego

PHL Philadelphia - SAN San Diego

PHLSAN

Philadelphia

Tue 8/12

11:45-18:15

1 stop9h 30m

San Diego

Fri 11/12

22:40-10:45

1 stop9h 05m

R6 012

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Philadelphia and San Diego?

Prices are currently low for flights on this route.

Typical prices usually range from R6 564 to R9 765.
The lowest price recently found on this route was R5 719.

What is the cheapest month to fly to San Diego?

The month of January is, on average, the cheapest month to fly to San Diego from Philadelphia, with most prices found around R6 857. The month of February is another great option to travel to San Diego, with average flight prices from Philadelphia averaging around R6 889.

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

You are more likely to see cheaper flights to San Diego from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around R7 896 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Philadelphia for as low as R7 246 on momondo.

How have Philadelphia to San Diego flight prices changed over time?

As of September 2026, prices for Philadelphia to San Diego flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to San Diego according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Philadelphia to San Diego (PHL to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to San Diego

Best price found	R2 518
Direct flights	Sat
Airports in San Diego	1 airport

The best one-way flight to San Diego from Philadelphia in the past 72 hours is R2 518. The best return flight deal from Philadelphia to San Diego found on momondo in the last 72 hours is R5 719.

Direct flights go from Philadelphia to San Diego on Saturday. There are no airlines offering direct flights..

There is 1 airport in San Diego. From Philadelphia there are direct flights to San Diego (SAN).

Search flight deals

Frequently asked questions about flying from Philadelphia to San Diego

How far is Philadelphia to San Diego by plane?
San Diego is 3808,6 km away from Philadelphia.
When did momondo last update prices for flights from Philadelphia Airport to San Diego Airport?
Prices for flights from Philadelphia Airport to San Diego Airport are refreshed on a daily basis.
How old do you have to be to fly from Philadelphia Airport to San Diego Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Philadelphia to San Diego?
Based on momondo bookings for flights between Philadelphia and San Diego, the leading plane model is Airbus A321-100/200, making up 55,41% of the total bookings. Other popular models include Airbus A321neo with 12,10%, Boeing 737 MAX 8 with 8,28%, and Boeing 737 MAX 9 with 6,37%.

El Cajon

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to San Diego?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from Philadelphia.

Can I find flights from Philadelphia to San Diego with flexible booking policies on momondo?

Yes. All flights to San Diego from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Philadelphia to San Diego?

Once you have performed a search for Philadelphia to San Diego flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Philadelphia to San Diego right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Philadelphia to San Diego flights. All you need is a valid email address and we will do the rest; it is that quick and easy.