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Cheap flights from Philadelphia to San Diego from $140

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 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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American Airlines Logo
6:47 pm - 9:48 pm
PHL
-
SAN
6h 01mnonstop
American Airlines Logo
11:30 am - 7:37 pm
SAN
-
PHL
5h 07mnonstop
$356American Airlines
mié., dic. 31 - mar., ene. 6
Delta Logo
6:00 am - 10:33 am
PHL
-
SAN
7h 33m1 stop
Delta Logo
10:30 pm - 11:11 am
SAN
-
PHL
9h 41m1 stop
$357Delta
dom., ene. 18 - sáb., ene. 24
Alaska Airlines Logo
7:06 pm - 10:07 am
PHL
-
SAN
18h 01m1 stop
Alaska Airlines Logo
8:59 pm - 6:03 pm
SAN
-
PHL
18h 04m2 stops
$359Alaska Airlines
mar., ene. 20 - vie., ene. 23
JetBlue Logo
8:40 am - 8:20 pm
PHL
-
SAN
14h 40m1 stop
JetBlue Logo
3:15 pm - 12:35 pm
SAN
-
PHL
18h 20m1 stop
$362JetBlue
lun., ene. 19 - mié., ene. 21
American Airlines Logo
7:50 pm - 10:58 pm
PHL
-
SAN
6h 08mnonstop
American Airlines Logo
9:51 pm - 5:50 am
SAN
-
PHL
4h 59mnonstop
$363American Airlines
mar., feb. 10 - dom., feb. 15
JetBlue Logo
8:40 am - 6:58 pm
PHL
-
SAN
13h 18m1 stop
JetBlue Logo
9:35 pm - 6:23 pm
SAN
-
PHL
17h 48m1 stop
$364JetBlue
vie., ene. 9 - lun., ene. 12
Alaska Airlines Logo
6:20 pm - 6:30 pm
PHL
-
SAN
27h 10m1 stop
Alaska Airlines Logo
3:45 pm - 5:20 pm
SAN
-
PHL
22h 35m1 stop
$365Alaska Airlines
mar., feb. 24 - jue., mar. 5
American Airlines Logo
6:47 pm - 9:48 pm
PHL
-
SAN
6h 01mnonstop
American Airlines Logo
7:00 am - 5:55 pm
SAN
-
PHL
7h 55m1 stop
$366American Airlines
mié., dic. 31 - mar., ene. 6
Alaska Airlines Logo
6:22 pm - 2:10 pm
PHL
-
SAN
22h 48m2 stops
Alaska Airlines Logo
4:45 pm - 5:47 pm
SAN
-
PHL
22h 02m1 stop
$367Alaska Airlines
vie., mar. 13 - mar., mar. 17
Delta Logo
7:00 am - 4:24 pm
PHL
-
SAN
12h 24m2 stops
Delta Logo
6:25 am - 4:37 pm
SAN
-
PHL
7h 12m1 stop
$368Delta
sáb., feb. 28 - sáb., mar. 7

JetBlue flights from Philadelphia to San Diego

Our best JetBlue deals on Philadelphia to San Diego flight tickets
JetBlue
Jan 8
PHL8:40 amPhiladelphia
14h 04m
1 stop
SAN7:44 pmSan Diego
Jan 12
SAN9:35 pmSan Diego
17h 48m
1 stop
PHL6:23 pmPhiladelphia
$364
Find similar
JetBlue
May 21
PHL10:00 amPhiladelphia
13h 08m
1 stop
SAN8:08 pmSan Diego
May 25
SAN9:19 pmSan Diego
8h 54m
1 stop
PHL9:13 amPhiladelphia
$370
Find similar
JetBlue
Feb 10
PHL8:40 amPhiladelphia
14h 40m
1 stop
SAN8:20 pmSan Diego
Feb 15
SAN8:34 pmSan Diego
22h 33m
1 stop
PHL10:07 pmPhiladelphia
$374
Find similar

United Airlines flights from Philadelphia to San Diego

Our best United Airlines deals on Philadelphia to San Diego flight tickets
United Airlines
Jan 14
PHL6:30 amPhiladelphia
8h 18m
1 stop
SAN11:48 amSan Diego
Jan 21
SAN11:08 amSan Diego
9h 22m
2 stops
PHL11:30 pmPhiladelphia
$377
Find similar
United Airlines
Jan 7
PHL6:30 amPhiladelphia
8h 18m
1 stop
SAN11:48 amSan Diego
Jan 19
SAN10:00 pmSan Diego
8h 38m
1 stop
PHL9:38 amPhiladelphia
$387
Find similar
United Airlines
May 25
PHL6:10 amPhiladelphia
8h 12m
1 stop
SAN11:22 amSan Diego
May 30
SAN7:44 pmSan Diego
11h 43m
2 stops
PHL10:27 amPhiladelphia
$407
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 diciembre 28, 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. 12/31

6:47 pm-9:48 pm

Nonstop6h 01m

San Diego

mar. 1/6

11:30 am-7:37 pm

Nonstop5h 07m

$356

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

dom. 1/18

6:00 am-10:33 am

1 stop7h 33m

San Diego

sáb. 1/24

10:30 pm-11:11 am

1 stop9h 41m

$357

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mar. 1/20

7:06 pm-10:07 am

1 stop18h 01m

San Diego

vie. 1/23

8:59 pm-6:03 pm

2 stops18h 04m

$359

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

lun. 1/19

8:40 am-8:20 pm

1 stop14h 40m

San Diego

mié. 1/21

3:15 pm-12:35 pm

1 stop18h 20m

$362

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mar. 2/10

7:50 pm-10:58 pm

Nonstop6h 08m

San Diego

dom. 2/15

9:51 pm-5:50 am

Nonstop4h 59m

$363

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

vie. 1/9

8:40 am-6:58 pm

1 stop13h 18m

San Diego

lun. 1/12

9:35 pm-6:23 pm

1 stop17h 48m

$364

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mar. 2/24

6:20 pm-6:30 pm

1 stop27h 10m

San Diego

jue. 3/5

3:45 pm-5:20 pm

1 stop22h 35m

$365

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

mié. 12/31

6:47 pm-9:48 pm

Nonstop6h 01m

San Diego

mar. 1/6

7:00 am-5:55 pm

1 stop7h 55m

$366

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

vie. 3/13

6:22 pm-2:10 pm

2 stops22h 48m

San Diego

mar. 3/17

4:45 pm-5:47 pm

1 stop22h 02m

$367

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

sáb. 2/28

7:00 am-4:24 pm

2 stops12h 24m

San Diego

sáb. 3/7

6:25 am-4:37 pm

1 stop7h 12m

$368

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 $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 $393. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $530. 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 $460.

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 $374 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?

No. A direct flight is the cheapest option for a flight between Philadelphia to San Diego.

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

As of December 2025, prices for Philadelphia to San Diego flights are approximately 13% 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

$419

Fastest flight time

5h 37m

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 $419. The best round-trip flight deal from Philadelphia to San Diego found on momondo in the last 72 hours is $408.
The fastest flight from Philadelphia to San Diego takes 5h 37m
Direct flights go from Philadelphia to San Diego every day.
There is 1 airport in San Diego. From Philadelphia there are direct flights to 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 37m 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 $143Free CancellationRating
5.7
3,064 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $146Free CancellationRating
6.3
8,212 reviews
Search Spirit Airlines flights
JetBluePriceFrom $157Free CancellationRating
7.2
2,901 reviews
Search JetBlue flights
DeltaPriceFrom $230Free CancellationRating
7.9
8,016 reviews
Search Delta flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
SouthwestPriceFrom $302Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
American AirlinesPriceFrom $313Free CancellationRating
7.2
11,071 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 17 flights/week on average for this route. A good American Airlines flight deal for Philadelphia to San Diego starts from $313 round-trip, up to an average price of $442. 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
Poway
National City
Borrego Springs
Imperial Beach
La Mesa
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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