PHL - SAN

$200 Find Cheap Flights from Philadelphia to San Diego - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to San Diego departing on 9/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to San Diego.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to San Diego.
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Everything you should know

Cheapest round-trip
$410
Typical prices: $543-$389
Southwest
Wed 7/1Wed 7/8
PHL - SAN • 2 stops
Cheapest non-stop
$411
Typical prices: $586-$420
American Airlines
Tue 7/28Tue 8/4
PHL - SAN • Non-stop
Top airlines
Cheapest • from $410 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines. Average duration is 5h 45m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $260 (round-trip)
Shortest trip • 7h 15m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 8% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Expert advice
Flight Deals

Cheap Flights from Philadelphia to San Diego (PHL-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to San Diego

Wed, Jul 1 - Wed, Jul 8
Southwest Logo
12:55 pm - 6:45 pm
PHL
-
SAN
8h 50m
2 stops
Southwest Logo
12:10 pm - 1:05 am
SAN
-
PHL
9h 55m
2 stops
$410Southwest
Sat, Sep 19 - Sat, Sep 26
American Airlines Logo
6:00 pm - 8:51 pm
PHL
-
SAN
5h 51mnonstop
American Airlines Logo
6:20 am - 2:45 pm
SAN
-
PHL
5h 25mnonstop
$411American Airlines
Thu, Jul 2 - Wed, Jul 8
Multiple Airlines Logo
11:06 am - 7:34 pm
PHL
-
SAN
11h 28m
1 stop
Multiple Airlines Logo
8:30 pm - 8:30 am
SAN
-
PHL
33h 00m
2 stops
$412Multiple Airlines
Fri, Jul 3 - Sat, Jul 11
American Airlines Logo
3:40 pm - 6:22 pm
PHL
-
SAN
5h 42mnonstop
American Airlines Logo
9:55 pm - 6:13 am
SAN
-
PHL
5h 18mnonstop
$413American Airlines
Sat, Aug 1 - Wed, Aug 5
Multiple Airlines Logo
11:06 am - 8:06 pm
PHL
-
SAN
12h 00m
1 stop
Multiple Airlines Logo
8:30 pm - 8:22 am
SAN
-
PHL
32h 52m
2 stops
$414Multiple Airlines
Wed, Aug 5 - Sun, Aug 9
Frontier Logo
12:44 pm - 9:10 am
PHL
-
SAN
23h 26m
1 stop
Frontier Logo
6:25 am - 5:39 am
SAN
-
PHL
20h 14m
1 stop
$415Frontier
Sun, Oct 25 - Fri, Oct 30
Multiple Airlines Logo
10:00 am - 4:51 pm
PHL
-
SAN
9h 51m
1 stop
Multiple Airlines Logo
8:40 pm - 9:39 am
SAN
-
PHL
9h 59m
1 stop
$416Multiple Airlines
Wed, Jul 1 - Tue, Jul 7
Frontier Logo
7:00 am - 3:52 pm
PHL
-
SAN
11h 52m
2 stops
Frontier Logo
3:03 pm - 6:00 am
SAN
-
PHL
11h 57m
1 stop
$417Frontier
Tue, Sep 8 - Tue, Sep 15
Frontier Logo
10:46 am - 8:58 pm
PHL
-
SAN
13h 12m
1 stop
Frontier Logo
9:57 am - 5:36 am
SAN
-
PHL
16h 39m
2 stops
$418Frontier
Thu, Jun 25 - Tue, Jun 30
Frontier Logo
8:37 pm - 9:09 am
PHL
-
SAN
15h 32m
1 stop
Frontier Logo
6:25 am - 11:47 am
SAN
-
PHL
26h 22m
1 stop
$419Frontier
Booking Insights

KAYAK's insights & trends for Philadelphia to San Diego flights

Get data-powered insights and trends into flights from Philadelphia to San Diego to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Philadelphia to San Diego?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to San Diego departing in July.

What’s the cheapest day of the week to fly from Philadelphia to San Diego?

The average price of all round-trip flights from Philadelphia to San Diego clicked on KAYAK for each day over the last 12 months.

When flying from Philadelphia to San Diego, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to San Diego is September, where tickets cost $391 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $517 and $505 respectively.

Can I save money by flying with a layover from Philadelphia to San Diego?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $405 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to San Diego, you should book around 5 weeks before departure, which saves you about 8% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Philadelphia to San Diego

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Harriet Baskas

Harriet Baskas

Expert on PHL

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonJanuary
Cheapest flight$200
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Philadelphia to San Diego

When to book flights from Philadelphia to San Diego

Are your dates flexible? Find out the best times to travel from Philadelphia to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to San Diego

  • What types of flights are offered between Philadelphia and San Diego?

    To travel from Philadelphia to San Diego, it’s possible to find direct flights, with these trips often being serviced by American Airlines. There are many journeys that require travelers to make a connection as well, and this may occur in cities like Dallas or Phoenix. Connecting flights are often operated by Alaska Airlines or Delta.

  • How can I travel from downtown Philadelphia to Philadelphia International Airport?

    A popular way of traveling from downtown Philadelphia to Philadelphia International Airport is by driving, as it only takes between 15 and 20min in total. Public transportation is available for this trip as well, such as the Airport Line bus. If you take the local bus, expect the journey to last around 20 to 25min.

  • Does San Diego International Airport have its own rental car center?

    There is an off-site rental car facility near San Diego International Airport, which can be reached by a free shuttle bus. At this facility, you will find offices for a few different rental agencies, including Budget, Enterprise, and National. Each company keeps their fleet at the center.

  • What transportation options are available for going from San Diego International Airport to the city center?

    To go from San Diego International Airport to the city center as quickly as possible, it’s usually best to drive, as the journey will only take you around 10 to 15min as long as there is no additional traffic. There is also public transportation that can be used to go between these two locations, such as public bus line 992. If you choose to take the bus, you’ll arrive at the city center in around 20min.

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

    In the last 5 days, the lowest price for a flight from Philadelphia to San Diego was $200 for a one-way ticket and $410 for a round-trip.

  • Do I need a passport to fly between Philadelphia and San Diego?

    No, a passport isn't needed to fly from Philadelphia to San Diego. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Philadelphia to San Diego?

    Philadelphia and San Diego are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at San Diego.

  • Which airlines offer Wi-Fi service onboard planes from Philadelphia to San Diego?

    American Airlines, JetBlue, Alaska Airlines, Hawaiian Airlines, and Delta offer inflight Wi-Fi service on the Philadelphia to San Diego flight route.

  • Which aircraft models fly most regularly from Philadelphia to San Diego?

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the Philadelphia to San Diego flight route.

  • Which airline alliances offer flights from Philadelphia to San Diego?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Philadelphia and San Diego, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Philadelphia to San Diego?

    There are nonstop flights from Philadelphia to San Diego on a daily basis.

  • Which is the best airline for flights from Philadelphia to San Diego, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Philadelphia to San Diego are Southwest and Delta. With an average price for the route of $486 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $397 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Philadelphia to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and SAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Philadelphia to San Diego

  • Looking for a cheap flight? 25% of our users found flights on this route for $345 or less one-way and $496 or less round-trip.
  • Philadelphia International Airport (PHL) is a major hub for both Frontier Airlines and American Airlines. Due to this, you will find many flights that depart from this airport are operated by one of these companies.
  • If you’ll be flying with a small child that is still nursing, keep your eyes open for one of the lactation rooms in San Diego International Airport (SAN). These rooms are located in Terminals 1 and 2 and contain comfortable seating, a highchair, a small washing station, and outlets.
  • Those that have an early flight departing from Philadelphia International Airport may be interested in staying at a hotel directly at the airport in order to maximize their sleeping time. Minute Suites can be found in Terminals A and B and rent rooms either per hour or overnight, while the Philadelphia Airport Marriott is in Terminal B.
  • Travelers that are hungry or thirsty once they have arrived at San Diego International Airport can choose from a few quick dining options in each terminal. Both Ryan Bro’s Coffee in Terminal 1 and Einstein Bros. Bagels in Terminal 2 are open 24h a day and have a variety of to-go options.
  • When traveling with a furry friend, you’ll want to make sure that you find one of the “Pet Ports” in Philadelphia International Airport. There is at least one of these areas in each terminal and they contain fake grass and trash cans for pet owners to take advantage of.

Prefer to fly direct from Philadelphia to San Diego?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Philadelphia to San Diego.
Find which airlines fly direct from Philadelphia Airport to San Diego Airport, which days they fly and book direct flights.

Direct departures

Philadelphia to San Diego

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Direct returns

San Diego to Philadelphia

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Reviews of the top 5 airlines serving from Philadelphia to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4235 reviews
7.0Food
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

4.0 OkayAnonymous, May 2026
MDW - LAX
Read more Southwest reviews

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

Service was professional and quick. Premium economy seat was comfortable given the class

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

The seat when "flat" was not flat and pad was too thin to cover it.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Delayed for mechanical and no updates on what was happening and how long the delay might be.

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

JetBlue worker, Blythe, was so amazing at the DCA counter. If it wasn’t for her, I’m not sure we would’ve made it through. Please thank her!

They lost my luggage and refuse to help. Terrible airline. I've never experienced worse customer service in my life. Pretty much just told me too bad that I lost all my luggage, not caring that I am stuck in Europe for 2 weeks with absolutely nothing.

You should have had Wifi to make it much enjoyable.

The flight out was delayed from 3:40pm to 5pm and again to 8pm. We boarded after 5pm, had to disembark because they could not get the Engine started, then we switched gates and got a new plane and did not board until after 8pm.

The flight was delayed after already taxiing from the gate due to a malfunction. After 3 hours we were told the flight was canceled. The next flight available was Sunday. My daughter and I stayed overnight in the airport due to this issue. I was given a $12 meal voucher. Unacceptable

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

My bag was not loaded on my flight. it was not communicated to me until i was waiting for my bag at my destination. there was no confirmation of when my bag was arriving and no way to track it.

Nice plane, clean, wifi available and movies. All the flight attendants were courteous.

The gate attendant in Boston had a high raspy voice and spoke much too fast to be understood. Not pleasant.

The flight was delayed for more than 3 hours the flight attendant was so angry, it was my first flight with JetBlue but i don’t think I flight with them again.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

First of all we hade waited 3 hours in the airplane waiting to leave. Second the return schedule was changed and it messed up my entire vaction. I won't buy never again another flight and recommend to nobody traveling with them.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

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

Information on your arrival and departure airports