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$139+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAN
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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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”

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Cheapflights Tip: The best prices from Philadelphia to San Diego are usually found in January or November, booked 81 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap 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 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$221
(CheapOair)

One-way from

$139
(Delta)

Popular in

December

Cheapest in

January

Average price

$439

Good round-trip deal

$360 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Philadelphia-San Diego flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-San Diego flights.
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From Philadelphia to San Diego
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One-way flight from Philadelphia to San Diego
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High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Philadelphia to San Diego.
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Price to beat on a one-way flight from Philadelphia to San Diego.
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Find 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 15, 2025.

This CheapOair deal was found by Cheapflights users on 4/14. 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 4/3010:08 pmPHL - SAN
2 stops20h 11mMultiple Airlines
Tue 5/68:00 amSAN - PHL
1 stop19h 52mMultiple Airlines
Deal found 4/14$221
This Mytrip deal was found by Cheapflights users on 4/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:00 pmPHL - SAN
1 stop8h 56mSpirit Airlines
Wed 5/146:15 amSAN - PHL
2 stops26h 10mSpirit Airlines
Deal found 4/14$223
This CheapOair deal was found by Cheapflights users on 4/14. 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.
Fri 5/167:20 pmPHL - SAN
1 stop7h 38mFrontier
Sun 5/188:58 pmSAN - PHL
1 stop21h 17mFrontier
Deal found 4/14$228
This JetBlue Airways deal was found by Cheapflights users on 4/14. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/56:00 amPHL - SAN
1 stop9h 13mJetBlue
Tue 6/1010:20 amSAN - PHL
1 stop10h 07mJetBlue
Deal found 4/14$273
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:00 amPHL - SAN
1 stop9h 56mDelta
Sun 6/110:00 pmSAN - PHL
1 stop8h 09mDelta
Deal found 4/14$277
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/297:25 amPHL - SAN
1 stop12h 12mAlaska Airlines
Sat 11/15:25 pmSAN - PHL
1 stop9h 36mAlaska Airlines
Deal found 4/13$280
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/173:49 pmPHL - SAN
Nonstop5h 40mAmerican Airlines
Sat 5/2410:45 pmSAN - PHL
Nonstop5h 12mAmerican Airlines
Deal found 4/14$323
This Hawaiian Airlines deal was found by Cheapflights users on 4/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/177:05 amPHL - SAN
1 stop10h 34mHawaiian Airlines
Thu 9/185:27 pmSAN - PHL
1 stop9h 18mHawaiian Airlines
Deal found 4/14$379
This Southwest deal was found by Cheapflights users on 4/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:40 pmPHL - SAN
1 stop7h 35mSouthwest
Sun 9/289:25 pmSAN - PHL
2 stops10h 10mSouthwest
Deal found 4/14$385

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 15, 2025.
Use the filters below to find and compare flights from Philadelphia to San Diego that are best for you.

Fly from

Philadelphia

Fly to

San Diego

Route

Depart

Return

Price

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 4/30

10:08 pm-3:19 pm

2 stops20h 11m

San Diego

Tue 5/6

8:00 am-6:52 am

1 stop19h 52m

$221

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 5/10

6:00 pm-11:56 pm

1 stop8h 56m

San Diego

Wed 5/14

6:15 am-11:25 am

2 stops26h 10m

$223

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Fri 5/16

7:20 pm-11:58 pm

1 stop7h 38m

San Diego

Sun 5/18

8:58 pm-9:15 pm

1 stop21h 17m

$228

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 6/5

6:00 am-12:13 pm

1 stop9h 13m

San Diego

Tue 6/10

10:20 am-11:27 pm

1 stop10h 07m

$273

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Thu 5/29

6:00 am-12:56 pm

1 stop9h 56m

San Diego

Sun 6/1

10:00 pm-9:09 am

1 stop8h 09m

$277

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sat 5/17

3:49 pm-6:29 pm

Nonstop5h 40m

San Diego

Sat 5/24

10:45 pm-6:57 am

Nonstop5h 12m

$323

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 7/1

6:50 am-2:25 pm

2 stops10h 35m

San Diego

Tue 7/8

6:55 pm-9:15 am

1 stop11h 20m

$391

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Tue 7/1

6:20 am-2:11 pm

1 stop10h 51m

San Diego

Tue 7/8

8:44 pm-9:55 am

2 stops10h 11m

$415

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Wed 5/14

5:30 am-9:53 am

1 stop7h 23m

$139

PhiladelphiaSan Diego

PHL - SAN

PHLSAN

Philadelphia

Sun 4/27

10:08 pm-3:19 pm

2 stops20h 11m

$140

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 16 results
1
2

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
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust 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 11, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to San Diego, you should look to book at least 81 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, August is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $286). Flying from Philadelphia to San Diego in March is currently the most expensive (average of $366). 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 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to San Diego at noon. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Philadelphia to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to San Diego. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Philadelphia to San Diego flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Philadelphia to San Diego

Explore weekly flight availability from Philadelphia to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 15, 2025.

The most flights from PHL to SAN are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 15, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Philadelphia to San Diego to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,871 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,279 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,656 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
JetBlue
7.3
Good
2,927 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 7 flights from Philadelphia (PHL) to San Diego (SAN) per day to choose from. Flights to San Diego from Philadelphia are available from 6 different airlines, which means you should have some options if you want to compare airfare deals. 5h 37m is how long a nonstop flight from Philadelphia to San Diego typically takes.

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

    According to our current data, Spirit Airlines ($223), Frontier ($228), and JetBlue ($273) offers the cheapest pricing from Philadelphia to San Diego. Spirit Airlines is priced at 49% 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 Delta, which is currently one of the cheapest options available, starting at $139. Spirit Airlines flights start at $140 while deals on JetBlue start at $147 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 Qatar Airways (77%), British Airways (73%) or American Airlines (68%) 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 $752, our data indicates the cheapest price to be $155. The most popular route (Philadelphia - San Diego), is priced around $159.

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

    The most popular layover on flights from Philadelphia to San Diego is Las Vegas.

  • 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, Colosseum at Caesars Palace, and Fountains of Bellagio more than anywhere else. Fremont Street Experience, Colosseum at Caesars Palace, and Fountains of Bellagio are located about 5.9 mi, 2.6 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 $63.

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

    Philadelphia to San Diego flights that have layovers will least frequently stop in Denver.

  • 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, August is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $286). Flying from Philadelphia to San Diego in March is currently the most expensive (average of $366). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

Browse thousands of different options on Cheapflights for your next trip

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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.
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Top 6 airlines flying from Philadelphia to San Diego

Discover the top 6 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$122Average$224FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$136Average$244FlexibilityNo cancel feeOn-time65%
DeltaCheapest$197Average$385FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$387FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$292Average$489FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$296Average$470FlexibilityNo cancel feeOn-time71%

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