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Cheap flights from Philadelphia to San Diego from $122

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 12/23. 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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0 bags

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American Airlines Logo
6:35 pm - 9:39 pmPHL-SAN
6h 04mnonstop
American Airlines Logo
11:29 pm - 7:40 amSAN-PHL
5h 11mnonstop
$323American Airlines
Find Deal
mié., abr. 1 - mar., abr. 7
Frontier Logo
8:37 am - 7:44 amPHL-SAN
26h 07m2 stops
Frontier Logo
4:12 pm - 4:24 pmSAN-PHL
21h 12m1 stop
$324Frontier
Find Deal
mar., nov. 25 - sáb., nov. 29
Multiple Airlines Logo
8:00 am - 12:36 pmPHL-SAN
31h 36m1 stop
Multiple Airlines Logo
4:47 pm - 4:05 pmSAN-PHL
44h 18m2 stops
$325Multiple Airlines
Find Deal
mié., dic. 3 - sáb., dic. 13
JetBlue Logo
8:00 am - 2:05 pmPHL-SAN
9h 05m1 stop
JetBlue Logo
3:15 pm - 12:35 pmSAN-PHL
18h 20m1 stop
$326JetBlue
Find Deal
mar., ene. 6 - mié., ene. 14
United Airlines Logo
10:10 am - 3:33 pmPHL-SAN
8h 23m1 stop
United Airlines Logo
10:00 pm - 9:37 amSAN-PHL
8h 37m1 stop
$327United Airlines
Find Deal
vie., feb. 6 - lun., feb. 9
Frontier Logo
7:10 am - 12:11 pmPHL-SAN
8h 01m1 stop
Frontier Logo
6:40 am - 8:56 pmSAN-PHL
11h 16m1 stop
$328Frontier
Find Deal
mar., dic. 23 - sáb., dic. 27
Frontier Logo
6:00 am - 8:01 amPHL-SAN
29h 01m1 stop
Frontier Logo
4:47 pm - 5:31 amSAN-PHL
9h 44m1 stop
$329Frontier
Find Deal
vie., nov. 28 - vie., dic. 5
Frontier Logo
2:25 pm - 12:11 pmPHL-SAN
24h 46m2 stops
Frontier Logo
6:25 am - 1:24 amSAN-PHL
15h 59m1 stop
$330Frontier
Find Deal
mié., dic. 24 - mar., dic. 30
JetBlue Logo
10:24 am - 10:28 amPHL-SAN
27h 04m1 stop
JetBlue Logo
8:34 pm - 9:39 amSAN-PHL
10h 05m1 stop
$331JetBlue
Find Deal
mié., dic. 3 - mié., dic. 10
United Airlines Logo
6:30 am - 11:30 amPHL-SAN
8h 00m1 stop
United Airlines Logo
8:40 pm - 9:35 amSAN-PHL
9h 55m2 stops
$332United Airlines
Find Deal
mié., dic. 3 - jue., dic. 4

Delta flights from Philadelphia to San Diego

Our best Delta deals on Philadelphia to San Diego flight tickets
Delta
Jan 7
PHL6:00 amPhiladelphia
7h 33m
1 stop
SAN10:33 amSan Diego
Jan 14
SAN8:00 amSan Diego
8h 43m
1 stop
PHL7:43 pmPhiladelphia
$341
Find similar
Delta
Apr 1
PHL6:15 amPhiladelphia
9h 52m
1 stop
SAN1:07 pmSan Diego
Apr 7
SAN6:15 amSan Diego
7h 07m
1 stop
PHL4:22 pmPhiladelphia
$343
Find similar
Delta
Jan 7
PHL11:27 amPhiladelphia
12h 16m
2 stops
SAN8:43 pmSan Diego
Jan 14
SAN5:35 pmSan Diego
12h 17m
2 stops
PHL8:52 amPhiladelphia
$366
Find similar

Alaska Airlines flights from Philadelphia to San Diego

Our best Alaska Airlines deals on Philadelphia to San Diego flight tickets
Alaska Airlines
Dec 4
PHL7:06 amPhiladelphia
12h 51m
1 stop
SAN4:57 pmSan Diego
Dec 9
SAN7:15 amSan Diego
19h 31m
2 stops
PHL5:46 amPhiladelphia
$350
Find similar
Alaska Airlines
Dec 13
PHL7:06 amPhiladelphia
12h 51m
1 stop
SAN4:57 pmSan Diego
Jan 8
SAN7:03 pmSan Diego
20h 00m
1 stop
PHL6:03 pmPhiladelphia
$358
Find similar
Alaska Airlines
Feb 19
PHL6:20 pmPhiladelphia
31h 43m
1 stop
SAN11:03 pmSan Diego
Feb 24
SAN8:39 amSan Diego
29h 41m
1 stop
PHL5:20 pmPhiladelphia
$359
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated noviembre 13, 2025.
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

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 4/1

6:35 pm-9:39 pm

Nonstop6h 04m

San Diego

mar. 4/7

11:29 pm-7:40 am

Nonstop5h 11m

$323

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mar. 11/25

8:37 am-7:44 am

2 stops26h 07m

San Diego

sáb. 11/29

4:12 pm-4:24 pm

1 stop21h 12m

$324

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 12/3

8:00 am-12:36 pm

1 stop31h 36m

San Diego

sáb. 12/13

4:47 pm-4:05 pm

2 stops44h 18m

$325

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mar. 1/6

8:00 am-2:05 pm

1 stop9h 05m

San Diego

mié. 1/14

3:15 pm-12:35 pm

1 stop18h 20m

$326

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

vie. 2/6

10:10 am-3:33 pm

1 stop8h 23m

San Diego

lun. 2/9

10:00 pm-9:37 am

1 stop8h 37m

$327

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mar. 12/23

7:10 am-12:11 pm

1 stop8h 01m

San Diego

sáb. 12/27

6:40 am-8:56 pm

1 stop11h 16m

$328

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

vie. 11/28

6:00 am-8:01 am

1 stop29h 01m

San Diego

vie. 12/5

4:47 pm-5:31 am

1 stop9h 44m

$329

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 12/24

2:25 pm-12:11 pm

2 stops24h 46m

San Diego

mar. 12/30

6:25 am-1:24 am

1 stop15h 59m

$330

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 12/3

10:24 am-10:28 am

1 stop27h 04m

San Diego

mié. 12/10

8:34 pm-9:39 am

1 stop10h 05m

$331

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 12/3

6:30 am-11:30 am

1 stop8h 00m

San Diego

jue. 12/4

8:40 pm-9:35 am

2 stops9h 55m

$332

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 August is also very affordable. Most momondo users find prices during this month for around $406.

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 $514. 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 $464.

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 $424 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 $379 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 22% 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 November 2025, prices for Philadelphia to San Diego flights are approximately 12% 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

$208

Fastest flight time

5h 54m

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 $208. The best round-trip flight deal from Philadelphia to San Diego found on momondo in the last 72 hours is $367.
The fastest flight from Philadelphia to San Diego takes 5h 54m
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 59m 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $141Free CancellationRating
5.8
3,114 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $147Free CancellationRating
6.3
8,139 reviews
Search Spirit Airlines flights
JetBluePriceFrom $157Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
United AirlinesPriceFrom $158Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
DeltaPriceFrom $230Free CancellationRating
7.9
8,007 reviews
Search Delta flights
SouthwestPriceFrom $302Free CancellationRating
8.0
4,236 reviews
Search Southwest flights
American AirlinesPriceFrom $311Free CancellationRating
7.2
11,050 reviews
Search American Airlines 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 $311 round-trip, up to an average price of $443. Our users have rated American Airlines at 7.2/10.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
Imperial Beach
La Mesa
Poway
Borrego Springs
San Ysidro
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.

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.
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sáb. 12/13
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