San Diego

$60+ Cheap flights from Philadelphia to San Diego (PHL - SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAN
May 9 — May 161
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Find cheap flights from Philadelphia to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Philadelphia to San Diego are usually found in September or October, booked 78 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Philadelphia to San Diego

Cheapest flights from Philadelphia to San Diego
Explore the most affordable flight options available from Philadelphia to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.

This CheapOair deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:00 am
PHL
-
SAN
1 stop8h 17m
Multiple Airlines
Tue 4/289:15 pm
SAN
-
PHL
2 stops21h 25m
Multiple Airlines
Deal found 4/7$364
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:40 am
PHL
-
SAN
1 stop13h 32m
Frontier
Wed 6/104:47 pm
SAN
-
PHL
2 stops16h 36m
Frontier
Deal found 4/8$365
This CheapOair deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:37 pm
PHL
-
SAN
1 stop15h 05m
Frontier
Fri 8/286:25 am
SAN
-
PHL
1 stop26h 22m
Frontier
Deal found 4/8$366
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:35 pm
PHL
-
SAN
1 stop15h 07m
Frontier
Sun 5/3110:07 pm
SAN
-
PHL
2 stops21h 07m
Frontier
Deal found 4/6$367
This Cheapflightsfares deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:25 pm
PHL
-
SAN
1 stop27h 01m
Frontier
Mon 4/136:45 am
SAN
-
PHL
1 stop10h 08m
Frontier
Deal found 4/5$369
This CheapOair deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:42 pm
PHL
-
SAN
1 stop23h 00m
Multiple Airlines
Thu 9/106:06 pm
SAN
-
PHL
1 stop13h 50m
Multiple Airlines
Deal found 4/5$370
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:05 am
PHL
-
SAN
2 stops15h 51m
Frontier
Wed 4/228:00 am
SAN
-
PHL
1 stop18h 34m
Frontier
Deal found 4/8$371
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:37 am
PHL
-
SAN
2 stops12h 54m
Multiple Airlines
Sun 5/1712:09 pm
SAN
-
PHL
1 stop18h 51m
Multiple Airlines
Deal found 4/5$372
This Gotogate deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:36 pm
PHL
-
SAN
1 stop22h 00m
Frontier
Sat 4/116:25 am
SAN
-
PHL
1 stop20h 05m
Frontier
Deal found 4/5$373
This Cheapflightsfares deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/58:25 pm
PHL
-
SAN
1 stop30h 37m
Frontier
Wed 4/812:00 pm
SAN
-
PHL
1 stop14h 31m
Frontier
Deal found 4/5$374
This Expedia deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2110:40 am
PHL
-
SAN
1 stop13h 32m
Frontier
Sun 5/246:25 am
SAN
-
PHL
1 stop12h 49m
Frontier
Deal found 4/6$375
This CheapOair deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2110:40 am
PHL
-
SAN
1 stop13h 32m
Multiple Airlines
Tue 5/268:44 pm
SAN
-
PHL
1 stop19h 08m
Multiple Airlines
Deal found 4/5$376

Find flight deals from Philadelphia to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$364
(CheapOair)

One-way from

$60
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$481

Good round-trip deal

$459 or less

Good one-way deal

$322 or less
Provider with most accurate pricing for Philadelphia-San Diego flight deals.
Provider most trusted by Cheapflights users for Philadelphia-San Diego flights.
From Philadelphia to San Diego
One-way flight from Philadelphia to San Diego
Highest demand for flights based on searches. 6% potential increase in price ($30 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in April 2026
Price to beat on a round-trip flight from Philadelphia to San Diego.
Price to beat on a one-way flight from Philadelphia to San Diego.

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
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

Cheapest round-trip

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sun 4/12

3:32 pm-11:26 pm

1 stop10h 54m

San Diego

Sat 4/18

7:15 am-5:35 am

1 stop19h 20m

$369

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 6/6

4:45 pm-12:07 am

1 stop10h 22m

San Diego

Tue 6/9

3:56 pm-5:35 am

1 stop10h 39m

$411

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 4/29

7:22 am-4:16 pm

2 stops11h 54m

San Diego

Tue 5/5

1:30 pm-6:02 am

2 stops13h 32m

$417

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 5/2

4:30 pm-11:25 pm

2 stops9h 55m

San Diego

Sat 5/9

8:40 am-9:35 pm

2 stops9h 55m

$426
Quickest round-trip

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 5/15

7:49 pm-10:49 pm

Nonstop6h 00m

San Diego

Tue 5/19

10:30 pm-6:44 am

Nonstop5h 14m

$433

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 5/5

7:22 am-3:53 pm

1 stop11h 31m

San Diego

Wed 5/6

4:49 pm-6:02 am

1 stop10h 13m

$446

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 6/9

4:35 pm-10:50 pm

2 stops9h 15m

San Diego

Tue 6/16

12:10 pm-1:00 am

2 stops9h 50m

$454

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 5/7

5:40 am-12:10 pm

2 stops9h 30m

San Diego

Fri 6/5

5:10 pm-11:00 am

2 stops14h 50m

$465

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 5/26

11:35 am-6:15 pm

2 stops9h 40m

San Diego

Wed 6/3

9:35 am-9:05 pm

2 stops8h 30m

$487

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 4/18

4:30 pm-11:25 pm

2 stops9h 55m

San Diego

Wed 4/22

6:20 am-5:50 pm

2 stops8h 30m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Philadelphia to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to San Diego in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to San Diego

How far ahead should I book a flight from Philadelphia to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to San Diego. Price data was last updated on April 3, 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to San Diego, you should look to book at least 78 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Philadelphia to San Diego?

Currently, November is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $72). Flying from Philadelphia to San Diego in July is currently the most expensive (average of $168). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to SAN?

Find hourly flight availability from Philadelphia to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 9, 2026.

When flying from Philadelphia to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Philadelphia to San Diego?

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated April 9, 2026.
Read through reviews of airlines operating flights from Philadelphia to San Diego, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from Philadelphia to San Diego?

    If you wish to fly to San Diego from Philadelphia, then you need to book flights from Philadelphia to San Diego. There are 5 flights from Philadelphia (PHL) to San Diego (SAN) per day to choose from. Flights to San Diego from Philadelphia are available from 7 different airlines, which means you should have some options if you want to compare airfare deals. 5h 40m is how long a nonstop flight from Philadelphia to San Diego typically takes.

  • How popular is this Philadelphia to San Diego flight route?

  • How long is the flight from Philadelphia to San Diego?

    Frontier, Alaska Airlines, and Southwest can get you from Philadelphia to San Diego in just under 9h 55m. Your travel time can differ by up to 59m. The distance from Philadelphia to San Diego is about 2364 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Philadelphia to San Diego round-trip?

    According to our current data, Frontier ($126), Spirit Airlines ($133), and Delta ($138) offers the cheapest pricing from Philadelphia to San Diego. Frontier is priced at 71% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to San Diego one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $49. Frontier flights start at $86 while deals on Delta start at $115 one-way.

  • What are the most reliable airlines from Philadelphia to San Diego?

    No one likes to see their flight delayed. When booking a flight from Philadelphia to San Diego consider choosing American Airlines (83%), Qatar Airways (80%) or British Airways (80%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Philadelphia to San Diego?

    Looking for the cheapest flight from Philadelphia to San Diego? While on average our users pay $757, our data indicates the cheapest price to be $229. The most popular route (Philadelphia - San Diego), is priced around $174.

  • Where are the most common layover locations when flying from Philadelphia to San Diego?

  • What are some popular things to do or see while on a layover in Las Vegas?

    Las Vegas travelers tend to visit Fremont Street Experience, Stratosphere Tower, and Fountains of Bellagio more than anywhere else. Fremont Street Experience, Stratosphere Tower, and Fountains of Bellagio are located about 5.9 mi, 4.3 mi, and 2.3 mi, respectively from Las Vegas Harry Reid Intl. Those on a layover in Las Vegas in need of a rental car can book one at Las Vegas Harry Reid Intl for about $65.

  • Where are the least popular layover locations for Philadelphia to San Diego flights?

  • Can I find deals for flights from Philadelphia to San Diego that include hotel bookings?

    Yes. In addition to deals on Philadelphia to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to San Diego.

  • Can I find deals for business class flights from Philadelphia to San Diego?

    Yes. Cheapflights offers flight deals from Philadelphia to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to San Diego?

    Currently, November is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $72). Flying from Philadelphia to San Diego in July is currently the most expensive (average of $168). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Alternative routes for Philadelphia to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Philadelphia to San Diego

Discover the top 7 airlines that operate flights from Philadelphia to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$126Average$260FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$269FlexibilityNo cancel feeOn-time65%
DeltaCheapest$138Average$342FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$254Average$444FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$265Average$393FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$313Average$477FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$321Average$455FlexibilityNo cancel feeOn-time71%

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