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

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

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

As of October 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 34% 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 October 2025. The most frequent departure day is Tue, with 17% 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: 33% 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.

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 $183.

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 00m.

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 28m.

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 October 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.

$106 Cheap Flights from Philadelphia to San Diego in 2025/26

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9:30 pm - 11:52 amPHL-SAN

17h 22m2 stops

1:37 pm - 4:49 amSAN-PHL

12h 12m1 stop

$292Frontier

Find Deal

Tue, Nov 4 - Wed, Nov 12

6:19 am - 4:00 pmPHL-SAN

12h 41m1 stop

1:37 pm - 4:49 amSAN-PHL

12h 12m1 stop

$293Frontier

Find Deal

Fri, Nov 7 - Wed, Nov 12

6:19 am - 6:45 pmPHL-SAN

15h 26m1 stop

6:36 am - 4:45 amSAN-PHL

19h 09m1 stop

$294Frontier

Find Deal

Sat, Nov 8 - Sun, Nov 23

8:02 pm - 9:20 amPHL-SAN

16h 18m2 stops

1:37 pm - 4:49 amSAN-PHL

12h 12m1 stop

$304Multiple Airlines

Find Deal

Sat, Nov 8 - Wed, Nov 12

8:05 pm - 12:35 pmPHL-SAN

19h 30m1 stop

7:12 pm - 2:07 pmSAN-PHL

15h 55m2 stops

$309Multiple Airlines

Find Deal

Thu, Nov 13 - Fri, Nov 21

12:33 pm - 8:45 pmPHL-SAN

11h 12m1 stop

6:30 am - 2:45 pmSAN-PHL

5h 15mnonstop

$318American Airlines

Find Deal

Wed, Dec 3 - Mon, Dec 8

1:05 pm - 7:00 pmPHL-SAN

8h 55m1 stop

7:00 pm - 9:10 amSAN-PHL

11h 10m1 stop

$327Southwest

Find Deal

Thu, Dec 18 - Mon, Dec 22

12:33 pm - 8:45 pmPHL-SAN

11h 12m1 stop

12:43 pm - 11:57 pmSAN-PHL

8h 14m1 stop

$328American Airlines

Find Deal

Wed, Dec 3 - Mon, Dec 8

5:45 am - 11:30 amPHL-SAN

8h 45m2 stops

7:00 pm - 9:10 amSAN-PHL

11h 10m1 stop

$332Southwest

Find Deal

Thu, Dec 18 - Mon, Dec 22

5:20 pm - 10:00 pmPHL-SAN

7h 40m1 stop

11:00 am - 10:56 pmSAN-PHL

8h 56m1 stop

$343Delta

Find Deal

Sat, Feb 14 - Wed, Feb 25

American Airlines flights from Philadelphia to San Diego

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

American Airlines

Dec 3

PHL12:33 pmPhiladelphia

11h 12m

1 stop

SAN8:45 pmSan Diego

Dec 8

SAN6:30 amSan Diego

5h 15m

PHL2:45 pmPhiladelphia

$318

Find similar

American Airlines

Oct 31

PHL6:00 amPhiladelphia

11h 10m

1 stop

SAN2:10 pmSan Diego

Nov 8

SAN6:35 amSan Diego

5h 14m

PHL2:49 pmPhiladelphia

$321

Find similar

American Airlines

Dec 3

PHL12:33 pmPhiladelphia

11h 12m

1 stop

SAN8:45 pmSan Diego

Dec 8

SAN12:43 pmSan Diego

8h 14m

1 stop

PHL11:57 pmPhiladelphia

$328

Find similar

Delta flights from Philadelphia to San Diego

Our best Delta deals on Philadelphia to San Diego flight tickets

Delta

Feb 14

PHL5:20 pmPhiladelphia

7h 40m

1 stop

SAN10:00 pmSan Diego

Feb 25

SAN11:00 amSan Diego

8h 56m

1 stop

PHL10:56 pmPhiladelphia

$343

Find similar

Delta

Nov 4

PHL6:00 amPhiladelphia

7h 47m

1 stop

SAN10:47 amSan Diego

Nov 15

SAN6:15 amSan Diego

8h 22m

1 stop

PHL5:37 pmPhiladelphia

$351

Find similar

Delta

Nov 4

PHL12:23 pmPhiladelphia

8h 37m

1 stop

SAN6:00 pmSan Diego

Nov 8

SAN10:30 pmSan Diego

7h 50m

1 stop

PHL9:20 amPhiladelphia

$361

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 11/4

9:30 pm-11:52 am

2 stops17h 22m

San Diego

Wed 11/12

1:37 pm-4:49 am

1 stop12h 12m

$292

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 11/7

6:19 am-4:00 pm

1 stop12h 41m

San Diego

Wed 11/12

1:37 pm-4:49 am

1 stop12h 12m

$293

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 11/8

6:19 am-6:45 pm

1 stop15h 26m

San Diego

Sun 11/23

6:36 am-4:45 am

1 stop19h 09m

$294

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 11/8

8:02 pm-9:20 am

2 stops16h 18m

San Diego

Wed 11/12

1:37 pm-4:49 am

1 stop12h 12m

$304

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 11/13

8:05 pm-12:35 pm

1 stop19h 30m

San Diego

Fri 11/21

7:12 pm-2:07 pm

2 stops15h 55m

$309

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 12/3

12:33 pm-8:45 pm

1 stop11h 12m

San Diego

Mon 12/8

6:30 am-2:45 pm

Nonstop5h 15m

$318

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 12/18

1:05 pm-7:00 pm

1 stop8h 55m

San Diego

Mon 12/22

7:00 pm-9:10 am

1 stop11h 10m

$327

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 12/3

12:33 pm-8:45 pm

1 stop11h 12m

San Diego

Mon 12/8

12:43 pm-11:57 pm

1 stop8h 14m

$328

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 12/18

5:45 am-11:30 am

2 stops8h 45m

San Diego

Mon 12/22

7:00 pm-9:10 am

1 stop11h 10m

$332

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 2/14

5:20 pm-10:00 pm

1 stop7h 40m

San Diego

Wed 2/25

11:00 am-10:56 pm

1 stop8h 56m

$343

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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 September, then departing from Philadelphia during the month January is also very affordable. Most momondo users find prices during this month for around $397.

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 $384. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $512. 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 $465.

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 $423 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 $378 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 4% 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 October 2025, prices for Philadelphia to San Diego flights are approximately 25% more expensive 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	$179
Fastest flight time	5h 42m
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 $179. The best round-trip flight deal from Philadelphia to San Diego found on momondo in the last 72 hours is $349.

The fastest flight from Philadelphia to San Diego takes 5h 42m

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 42m 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 October 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 66.92% of all bookings. The subsequent popular models are Boeing 737-900 Passenger/BBJ3 (winglets) at 5.64%, Airbus A321neo at 4.51%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 3.38%.
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 2%.

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 $139	Free Cancellation	Rating 5.8 3,130 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $149	Free Cancellation	Rating 6.3 8,097 reviews	Search Spirit Airlines flights
United Airlines	PriceFrom $226	Free Cancellation	Rating 7.4 8,988 reviews	Search United Airlines flights
Delta	PriceFrom $230	Free Cancellation	Rating 7.9 7,980 reviews	Search Delta flights
American Airlines	PriceFrom $309	Free Cancellation	Rating 7.2 11,028 reviews	Search American Airlines flights
Southwest	PriceFrom $344	Free Cancellation	Rating 8.0 4,237 reviews	Search Southwest flights

United Airlines Flights From Philadelphia to San Diego
United Airlines is one of the most popular airlines flying from Philadelphia to San Diego, operating 6 flights/week on average for this route. A good United Airlines flight deal for Philadelphia to San Diego starts from $226 round-trip, up to an average price of $428. Our users have rated United Airlines at 7.4/10.
American Airlines Flights From Philadelphia to San Diego
The best American Airlines deal for Philadelphia to San Diego flight tickets found on momondo in the last 72 hours was $309, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $444 round-trip. American Airlines operates 18 flights out of Philadelphia into San Diego in an average week, so prices vary by time and availability. 11,028 American Airlines reviews by users on momondo have scored the airline at 7.2/10.

Coronado

Chula Vista

El Cajon

Julian

National City

La Mesa

Imperial Beach

Poway

San Ysidro

Borrego Springs

Lemon Grove

Alpine

Santee

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 $106

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 1/18. 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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Filter for what you want

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Find the cheapest flights from Philadelphia to San Diego

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American Airlines flights from Philadelphia to San Diego

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

Delta flights from Philadelphia to San Diego

Our best Delta 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 September, then departing from Philadelphia during the month January is also very affordable. Most momondo users find prices during this month for around $397.

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 $465.

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 4% 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 October 2025, prices for Philadelphia to San Diego flights are approximately 25% more expensive when compared to flights at the same time last year.

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

Frontier, Southwest, and American Airlines 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: 33% 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 $183.

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 28m.

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 00m.

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

As of October 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 34% 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 October 2025. The most frequent departure day is Tue, with 17% 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

United Airlines Flights From Philadelphia to San Diego

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