Which layover airport offers the lowest fares from Philadelphia to San Diego?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $221.

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

The number of flights available between Philadelphia and San Diego is 46 per week as of September 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

Which airport is the most popular layover for flights between Philadelphia and San Diego?

Denver (DEN) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to San Diego?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to San Diego from Philadelphia according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 10 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

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

As of September 2025, 6 flights take off from Philadelphia and land in San Diego each day. The most common flight departure time for this route is 4:00PM, with 44% of daily flights taking off in the afternoon.

Which layover airport has the shortest connection time from Philadelphia to San Diego?

Detroit (DTW) has the shortest average layover time for this route: 1h 04m.

Which layover airport has the shortest travel time from Philadelphia to San Diego?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 7h 17m.

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

Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from Philadelphia to San Diego

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 refresh daily.

How many operators does momondo search for flights from Philadelphia Airport to San Diego Airport?

As of September 2025, there are 6 operators available to choose from for flights from Philadelphia Airport to San Diego Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. 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 license, 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.

$131 Cheap Flights from Philadelphia to San Diego (PHL-SAN) in 2025

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Find the cheapest flights from Philadelphia to San Diego (PHL-SAN)

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:15 am - 6:16 pmPHL-SAN

15h 01m2 stops

5:37 pm - 6:41 pmSAN-PHL

22h 04m2 stops

$261Frontier

Find Deal

Fri, Sep 19 - Sun, Sep 21

8:00 am - 11:17 pmPHL-SAN

18h 17m2 stops

5:57 pm - 4:49 amSAN-PHL

7h 52m1 stop

$262

Find Deal

Sat, Nov 1 - Fri, Nov 7

9:30 pm - 1:28 pmPHL-SAN

18h 58m2 stops

6:00 pm - 4:49 amSAN-PHL

7h 49m1 stop

$263Frontier

Find Deal

Tue, Nov 4 - Thu, Nov 6

7:00 am - 7:06 pmPHL-SAN

15h 06m2 stops

3:58 pm - 9:25 amSAN-PHL

14h 27m1 stop

$264Frontier

Find Deal

Thu, Sep 25 - Thu, Oct 2

4:03 pm - 6:59 pmPHL-SAN

5h 56mnonstop

10:59 pm - 7:01 amSAN-PHL

5h 02mnonstop

$267American Airlines

Find Deal

Wed, Nov 5 - Wed, Nov 12

6:25 am - 11:03 amPHL-SAN

7h 38m1 stop

12:25 pm - 11:29 pmSAN-PHL

8h 04m1 stop

$272Spirit Airlines

Find Deal

Fri, Oct 3 - Mon, Oct 6

6:25 am - 11:03 amPHL-SAN

7h 38m1 stop

11:59 am - 10:29 pmSAN-PHL

7h 30m1 stop

$274Spirit Airlines

Find Deal

Fri, Sep 26 - Fri, Oct 3

6:00 am - 10:47 amPHL-SAN

7h 47m1 stop

6:20 am - 6:09 pmSAN-PHL

8h 49m1 stop

$287Delta

Find Deal

Tue, Nov 4 - Tue, Nov 18

6:42 pm - 9:41 pmPHL-SAN

5h 59mnonstop

10:41 pm - 6:44 amSAN-PHL

5h 03mnonstop

$295American Airlines

Find Deal

Tue, Nov 25 - Tue, Dec 2

11:40 am - 9:10 pmPHL-SAN

12h 30m2 stops

6:30 am - 5:15 pmSAN-PHL

7h 45m1 stop

$298Southwest

Find Deal

Wed, Dec 3 - Tue, Dec 9

Frontier flights from Philadelphia to San Diego

Our best Frontier deals on Philadelphia to San Diego flight tickets

Frontier

Sep 19

PHL6:15 amPhiladelphia

15h 01m

2 stops

SAN6:16 pmSan Diego

Sep 21

SAN5:37 pmSan Diego

22h 04m

2 stops

PHL6:41 pmPhiladelphia

$261

Find similar

Frontier

Nov 4

PHL9:30 pmPhiladelphia

18h 58m

2 stops

SAN1:28 pmSan Diego

Nov 6

SAN6:00 pmSan Diego

7h 49m

1 stop

PHL4:49 amPhiladelphia

$263

Find similar

Frontier

Sep 25

PHL7:00 amPhiladelphia

15h 06m

2 stops

SAN7:06 pmSan Diego

Oct 2

SAN3:58 pmSan Diego

14h 27m

1 stop

PHL9:25 amPhiladelphia

$264

Find similar

American Airlines flights from Philadelphia to San Diego

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

American Airlines

Nov 5

PHL4:03 pmPhiladelphia

5h 56m

SAN6:59 pmSan Diego

Nov 12

SAN10:59 pmSan Diego

5h 02m

PHL7:01 amPhiladelphia

$267

Find similar

American Airlines

Nov 25

PHL6:42 pmPhiladelphia

5h 59m

SAN9:41 pmSan Diego

Dec 2

SAN10:41 pmSan Diego

5h 03m

PHL6:44 amPhiladelphia

$295

Find similar

American Airlines

Sep 4

PHL6:50 pmPhiladelphia

5h 53m

SAN9:43 pmSan Diego

Sep 6

SAN6:22 amSan Diego

5h 32m

PHL2:54 pmPhiladelphia

$323

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 9/19

6:15 am-6:16 pm

2 stops15h 01m

San Diego

Sun 9/21

5:37 pm-6:41 pm

2 stops22h 04m

$261

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 11/1

8:00 am-11:17 pm

2 stops18h 17m

San Diego

Fri 11/7

5:57 pm-4:49 am

1 stop7h 52m

$262

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 11/4

9:30 pm-1:28 pm

2 stops18h 58m

San Diego

Thu 11/6

6:00 pm-4:49 am

1 stop7h 49m

$263

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 9/25

7:00 am-7:06 pm

2 stops15h 06m

San Diego

Thu 10/2

3:58 pm-9:25 am

1 stop14h 27m

$264

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 11/5

4:03 pm-6:59 pm

Nonstop5h 56m

San Diego

Wed 11/12

10:59 pm-7:01 am

Nonstop5h 02m

$267

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 10/3

6:25 am-11:03 am

1 stop7h 38m

San Diego

Mon 10/6

12:25 pm-11:29 pm

1 stop8h 04m

$272

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 9/26

6:25 am-11:03 am

1 stop7h 38m

San Diego

Fri 10/3

11:59 am-10:29 pm

1 stop7h 30m

$274

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 11/4

6:00 am-10:47 am

1 stop7h 47m

San Diego

Tue 11/18

6:20 am-6:09 pm

1 stop8h 49m

$287

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 11/25

6:42 pm-9:41 pm

Nonstop5h 59m

San Diego

Tue 12/2

10:41 pm-6:44 am

Nonstop5h 03m

$295

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 12/3

11:40 am-9:10 pm

2 stops12h 30m

San Diego

Tue 12/9

6:30 am-5:15 pm

1 stop7h 45m

$298

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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

Layovers

Other information

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of November, then departing from Philadelphia during the month September is also very affordable. Most momondo users find prices during this month for around $395.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Philadelphia to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $379. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $513. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $394. Flights in the morning are often more expensive with an average ticket price of $469.

What is the cheapest Philadelphia to San Diego flight route?

Fly from Philadelphia to San Diego for the best Philadelphia - San Diego flight prices

How far in advance should I book a flight 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 $420 when searching weeks out. 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 $362 on momondo.

What cabin class options are available on Philadelphia to San Diego flights?

There are 3 cabin classes available to choose from on Philadelphia to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to San Diego flights?

You could potentially save up to 20% on your flight if you consider stops on a Philadelphia to San Diego flight.

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

As of September 2025, prices for Philadelphia to San Diego flights are approximately 1% 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 round-trip 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	$266
Fastest flight time	5h 36m
Direct flights	Every day
Airports in San Diego	1 airport

The best one-way flight to San Diego from Philadelphia in the past 72 hours is $266. The best round-trip flight deal from Philadelphia to San Diego found on momondo in the last 72 hours is $375.

The fastest flight from Philadelphia to San Diego takes 5h 36m

Direct flights go from Philadelphia to San Diego every day.

There is 1 airport near San Diego: San Diego (SAN)

Search flight deals

How far is Philadelphia to San Diego by plane?
The distance between Philadelphia and San Diego is about 2366.5 mi. Typically, this will take 5h 56m by plane in normal conditions.
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 refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to San Diego Airport?
As of September 2025, there are 6 operators available to choose from for flights from Philadelphia Airport to San Diego Airport.
How old do you have to be to fly from Philadelphia Airport to San Diego Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. 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 license, 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?
momondo data reveals that the most frequently booked plane model on the route from Philadelphia to San Diego is Airbus A321-100/200, representing 51.96% of all bookings. The subsequent popular models are Airbus A321neo at 21.23%, Boeing 737 MAX 9 at 3.91%, and Boeing 737-900 Passenger/BBJ3 (winglets) at 3.91%.
What is the most popular airline from Philadelphia to San Diego?
momondo data reveals that the most frequently booked airline on the route from Philadelphia to San Diego is American Airlines, representing 83% of all bookings. The subsequent popular airlines are Frontier at 6%, Spirit Airlines at 4%, and Southwest at 3%.

Best airlines flying from Philadelphia to San Diego

Compare and see reviews for airlines that fly from Philadelphia to San Diego with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $138	Free Cancellation	Rating 5.8 3,196 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $143	Free Cancellation	Rating 6.3 8,012 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $226	Free Cancellation	Rating 7.4 8,937 reviews	Search United Airlines flights
Delta	PriceFrom $230	Free Cancellation	Rating 7.9 7,972 reviews	Search Delta flights
American Airlines	PriceFrom $291	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $292	Free Cancellation	Rating 8.0 4,238 reviews	Search Southwest flights

American Airlines Flights From Philadelphia to San Diego
American Airlines is one of the most popular airlines flying from Philadelphia to San Diego, operating 20 flights/week on average for this route. A good American Airlines flight deal for Philadelphia to San Diego starts from $291 round-trip, up to an average price of $444. Our users have rated American Airlines at 7.2/10.

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Borrego Springs

Alpine

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Why use momondo?

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

It is quick and easy to find Philadelphia to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.

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

Yes. momondo allows you to filter the results for Philadelphia to San Diego flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to San Diego from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Philadelphia to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know when they change.

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Cheap flights from Philadelphia to San Diego from $131

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to San Diego departing on 10/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Philadelphia to San Diego (PHL-SAN)

Cheap round-trip flights

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Frontier flights from Philadelphia to San Diego

Our best Frontier deals on Philadelphia to San Diego flight tickets

American Airlines flights from Philadelphia to San Diego

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

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

See travel insights to San Diego from

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

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of November, then departing from Philadelphia during the month September is also very affordable. Most momondo users find prices during this month for around $395.

What is the cheapest day to depart on your flight to San Diego?

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $394. Flights in the morning are often more expensive with an average ticket price of $469.

What is the cheapest Philadelphia to San Diego flight route?

Fly from Philadelphia to San Diego for the best Philadelphia - San Diego flight prices

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

What cabin class options are available on Philadelphia to San Diego flights?

There are 3 cabin classes available to choose from on Philadelphia to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to San Diego flights?

You could potentially save up to 20% on your flight if you consider stops on a Philadelphia to San Diego flight.

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

As of September 2025, prices for Philadelphia to San Diego flights are approximately 1% cheaper when compared to flights at the same time last year.

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

Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from Philadelphia to San Diego

What airlines fly to San Diego?

Which airport is the most popular layover for flights between Philadelphia and San Diego?

Denver (DEN) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Philadelphia to San Diego?

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $221.

Which layover airport has the shortest travel time from Philadelphia to San Diego?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 7h 17m.

Which layover airport has the shortest connection time from Philadelphia to San Diego?

Detroit (DTW) has the shortest average layover time for this route: 1h 04m.

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

As of September 2025, 6 flights take off from Philadelphia and land in San Diego each day. The most common flight departure time for this route is 4:00PM, with 44% of daily flights taking off in the afternoon.

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

The number of flights available between Philadelphia and San Diego is 46 per week as of September 2025. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

When to book flights from Philadelphia to San Diego

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

Fastest flight time

Direct flights

Airports in San Diego

How far is Philadelphia to San Diego by plane?

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

How many operators does momondo search for flights from Philadelphia Airport to San Diego Airport?

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

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

What is the most popular plane model from Philadelphia to San Diego?

What is the most popular airline from Philadelphia to San Diego?

Best airlines flying from Philadelphia to San Diego

Compare and see reviews for airlines that fly from Philadelphia to San Diego with momondo

American Airlines Flights From Philadelphia to San Diego

Traveling to a place near San Diego?

Why use momondo?

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

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

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

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

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.