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Cheap flights from Philadelphia to San Diego from $125

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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Cheap round-trip flights

Frontier Logo
8:10 am - 5:54 pmPHL-SAN
12h 44m1 stop
Frontier Logo
10:20 am - 12:57 amSAN-PHL
11h 37m1 stop
$271Frontier
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lun., sep. 29 - dom., oct. 5
Frontier Logo
8:15 am - 6:28 pmPHL-SAN
13h 13m1 stop
Frontier Logo
7:43 pm - 6:44 pmSAN-PHL
20h 01m2 stops
$272Frontier
Find Deal
jue., oct. 16 - lun., oct. 20
Frontier Logo
8:10 am - 5:54 pmPHL-SAN
12h 44m1 stop
Frontier Logo
9:03 pm - 4:32 pmSAN-PHL
16h 29m2 stops
$273Frontier
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lun., sep. 29 - dom., oct. 5
Multiple Airlines Logo
6:19 am - 11:17 amPHL-SAN
7h 58m1 stop
Multiple Airlines Logo
5:25 pm - 5:42 amSAN-PHL
9h 17m1 stop
$274Multiple Airlines
Find Deal
jue., oct. 30 - mar., nov. 4
Multiple Airlines Logo
7:02 am - 2:47 pmPHL-SAN
10h 45m1 stop
Multiple Airlines Logo
5:41 am - 3:49 amSAN-PHL
19h 08m1 stop
$276Multiple Airlines
Find Deal
mié., oct. 29 - dom., nov. 2
Delta Logo
9:39 am - 2:11 pmPHL-SAN
7h 32m1 stop
Delta Logo
10:00 pm - 8:44 amSAN-PHL
7h 44m1 stop
$277Delta
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mié., dic. 3 - sáb., dic. 6
JetBlue Logo
10:20 am - 7:05 pmPHL-SAN
11h 45m1 stop
JetBlue Logo
8:39 pm - 8:37 amSAN-PHL
8h 58m1 stop
$299JetBlue
Find Deal
mié., oct. 22 - mar., oct. 28
Delta Logo
5:25 am - 9:30 amPHL-SAN
7h 05m1 stop
Delta Logo
7:25 am - 7:14 pmSAN-PHL
8h 49m1 stop
$314Delta
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mié., oct. 1 - mar., oct. 7
American Airlines Logo
4:05 pm - 6:47 pmPHL-SAN
5h 42mnonstop
American Airlines Logo
9:27 am - 5:49 pmSAN-PHL
5h 22mnonstop
$323American Airlines
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jue., oct. 30 - sáb., nov. 1
American Airlines Logo
5:30 am - 12:29 pmPHL-SAN
9h 59m1 stop
American Airlines Logo
10:41 pm - 6:44 amSAN-PHL
5h 03mnonstop
$324American Airlines
Find Deal
mar., nov. 25 - mar., dic. 2

Delta flights from Philadelphia to San Diego

Our best Delta deals on Philadelphia to San Diego flight tickets
Delta
Dec 3
PHL9:39 amPhiladelphia
7h 32m
1 stop
SAN2:11 pmSan Diego
Dec 6
SAN10:00 pmSan Diego
7h 44m
1 stop
PHL8:44 amPhiladelphia
$277
Find similar
Delta
Sep 23
PHL7:00 amPhiladelphia
8h 20m
1 stop
SAN12:20 pmSan Diego
Oct 7
SAN7:25 amSan Diego
8h 49m
1 stop
PHL7:14 pmPhiladelphia
$314
Find similar
Delta
Nov 5
PHL6:00 amPhiladelphia
9h 55m
1 stop
SAN12:55 pmSan Diego
Nov 12
SAN6:15 amSan Diego
7h 41m
1 stop
PHL4:56 pmPhiladelphia
$317
Find similar

American Airlines flights from Philadelphia to San Diego

Our best American Airlines deals on Philadelphia to San Diego flight tickets
American Airlines
Oct 30
PHL4:05 pmPhiladelphia
5h 42m
SAN6:47 pmSan Diego
Nov 1
SAN9:27 amSan Diego
5h 22m
PHL5:49 pmPhiladelphia
$323
Find similar
American Airlines
Nov 25
PHL5:30 amPhiladelphia
9h 59m
1 stop
SAN12:29 pmSan Diego
Dec 2
SAN10:41 pmSan Diego
5h 03m
PHL6:44 amPhiladelphia
$324
Find similar
American Airlines
Sep 23
PHL8:57 amPhiladelphia
5h 39m
SAN11:36 amSan Diego
Oct 7
SAN6:20 amSan Diego
5h 25m
PHL2:45 pmPhiladelphia
$327
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 septiembre 16, 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

lun. 9/29

8:10 am-5:54 pm

1 stop12h 44m

San Diego

dom. 10/5

10:20 am-12:57 am

1 stop11h 37m

$271

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

jue. 10/16

8:15 am-6:28 pm

1 stop13h 13m

San Diego

lun. 10/20

7:43 pm-6:44 pm

2 stops20h 01m

$272

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

lun. 9/29

8:10 am-5:54 pm

1 stop12h 44m

San Diego

dom. 10/5

9:03 pm-4:32 pm

2 stops16h 29m

$273

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

jue. 10/30

6:19 am-11:17 am

1 stop7h 58m

San Diego

mar. 11/4

5:25 pm-5:42 am

1 stop9h 17m

$274

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 10/29

7:02 am-2:47 pm

1 stop10h 45m

San Diego

dom. 11/2

5:41 am-3:49 am

1 stop19h 08m

$276

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 12/3

9:39 am-2:11 pm

1 stop7h 32m

San Diego

sáb. 12/6

10:00 pm-8:44 am

1 stop7h 44m

$277

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 10/22

10:20 am-7:05 pm

1 stop11h 45m

San Diego

mar. 10/28

8:39 pm-8:37 am

1 stop8h 58m

$299

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 10/1

5:25 am-9:30 am

1 stop7h 05m

San Diego

mar. 10/7

7:25 am-7:14 pm

1 stop8h 49m

$314

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

jue. 10/30

4:05 pm-6:47 pm

Nonstop5h 42m

San Diego

sáb. 11/1

9:27 am-5:49 pm

Nonstop5h 22m

$323

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mar. 11/25

5:30 am-12:29 pm

1 stop9h 59m

San Diego

mar. 12/2

10:41 pm-6:44 am

Nonstop5h 03m

$324

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 January, then departing from Philadelphia during the month September is also very affordable. Most momondo users find prices during this month for around $403.

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 $381. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $520. 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 $471.

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 10% 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 7% 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

$198

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 $198. The best round-trip flight deal from Philadelphia to San Diego found on momondo in the last 72 hours is $360.
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)
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  • 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?

  • 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 $138Free CancellationRating
5.8
3,174 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $143Free CancellationRating
6.3
8,019 reviews
Search Spirit Airlines flights
DeltaPriceFrom $143Free CancellationRating
7.9
7,957 reviews
Search Delta flights
United AirlinesPriceFrom $223Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
American AirlinesPriceFrom $295Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $308Free CancellationRating
8.0
4,242 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 21 flights/week on average for this route. A good American Airlines flight deal for Philadelphia to San Diego starts from $295 round-trip, up to an average price of $445. 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
La Mesa
National City
Poway
Imperial Beach
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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