PHL - SAN

$81 Find Cheap Flights from Philadelphia to San Diego

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 4/6. 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.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$333
Overall average: $413
Multiple Airlines
Wed 2/11Sat 2/21
PHL - SAN • 1 stop
Cheapest non-stop
$341
Typical prices: $361-$504
American Airlines
Sat 2/21Sat 2/28
PHL - SAN • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
PHL's public transportation connects to downtown fast.
SAN's Route 992 bus offers quick access to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to San Diego
Watch video
Watch video
Watch video
Watch video
Top airlines
Southwest
Cheapest • from $346 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 9% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
Booking Insights
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, Feb 11 - Sat, Feb 21
Multiple Airlines Logo
6:45 pm - 7:01 pm
PHL
-
SAN
27h 16m
1 stop
Multiple Airlines Logo
6:25 am - 12:17 am
SAN
-
PHL
14h 52m
2 stops
$333Multiple Airlines
Mon, Mar 2 - Tue, Mar 10
JetBlue Logo
6:00 am - 10:32 am
PHL
-
SAN
31h 32m
1 stop
JetBlue Logo
8:44 pm - 2:07 pm
SAN
-
PHL
14h 23m
1 stop
$334JetBlue
Mon, Feb 16 - Mon, Feb 23
Frontier Logo
7:12 pm - 9:41 pm
PHL
-
SAN
29h 29m
1 stop
Frontier Logo
8:20 pm - 12:39 pm
SAN
-
PHL
13h 19m
2 stops
$335Frontier
Fri, Mar 6 - Tue, Mar 10
JetBlue Logo
6:00 am - 2:23 pm
PHL
-
SAN
11h 23m
1 stop
JetBlue Logo
3:35 pm - 10:36 pm
SAN
-
PHL
28h 01m
1 stop
$336JetBlue
Sun, Mar 15 - Thu, Mar 26
JetBlue Logo
6:00 am - 1:08 pm
PHL
-
SAN
10h 08m
1 stop
JetBlue Logo
11:11 am - 10:31 pm
SAN
-
PHL
8h 20m
1 stop
$337JetBlue
Sat, Mar 28 - Wed, Apr 1
Frontier Logo
6:47 pm - 12:16 am
PHL
-
SAN
32h 29m
1 stop
Frontier Logo
12:00 pm - 5:31 am
SAN
-
PHL
14h 31m
1 stop
$338Frontier
Sat, Feb 7 - Wed, Feb 11
Frontier Logo
8:00 am - 11:31 pm
PHL
-
SAN
18h 31m
2 stops
Frontier Logo
7:11 am - 4:37 pm
SAN
-
PHL
30h 26m
1 stop
$339Frontier
Thu, Apr 23 - Sun, May 3
JetBlue Logo
8:25 am - 2:02 pm
PHL
-
SAN
8h 37m
1 stop
JetBlue Logo
8:30 pm - 7:35 am
SAN
-
PHL
8h 05m
1 stop
$340JetBlue
Sat, Feb 21 - Sat, Feb 28
American Airlines Logo
4:18 pm - 7:24 pm
PHL
-
SAN
6h 06mnonstop
American Airlines Logo
9:41 pm - 5:45 am
SAN
-
PHL
5h 04mnonstop
$341American Airlines
Sat, Feb 21 - Thu, Feb 26
Southwest Logo
2:00 pm - 10:15 pm
PHL
-
SAN
11h 15m
2 stops
Southwest Logo
6:55 am - 7:05 pm
SAN
-
PHL
9h 10m
2 stops
$342Southwest
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.

Find cheap flights to San Diego
Find cheap flights to San Diego

Planning a trip from Philadelphia to San Diego? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 $383 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $489 and $440 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 4 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 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.
Airports
PHL

PHL offers public transportation via SEPTA's Airport Regional Rail Line, connecting to downtown in about 30 minutes, a cost-effective option for travelers.

SAN

The Route 992 bus connects SAN to Downtown San Diego every 15 minutes, offering a budget-friendly 15-minute ride to the city center.

Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz

Brandon Schultz

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on PHL

Harriet Baskas

Harriet Baskas

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.

Read more

Good to know

Low seasonJanuary
Cheapest flight$81
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 2% lower on average.
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 3 days, the lowest price for a flight from Philadelphia to San Diego was $81 for a one-way ticket and $333 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?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Philadelphia and San Diego, with Star Alliance 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 $456 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $340 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 $305 or less one-way and $363 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.
8.0
SouthwestOverall score based on 4267 reviews
8.0Comfort
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

We are too tired and frustrated to comment politely at this point

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Once again, the staff seem to think they are above the customers and treat everyone with disdain, belittling people.

Flight was canceled 8 hours before departure for lack of operational control and prepositioning of a plane. Then had the audacity to say it was because of weather, however there was no weather here in California or New Orleans or in between. It was the weather in Florida, Florida it had nothing to do with our flight path just the plane was supposed to fly us. 8 hours is more than enough time to move a plane anywhere in the US. That left me with a bill of 1200 dollars to re book a flight oh and kayaks insurance what a joke. Probably will never use kayak or spirit ever again terrible companies terrible customer service. I’ll also let everyone and anyone know this was an abomination and only for the customer. Also will be making a report to the DOT on bad business practices on behalf of kayak and spirit as well as the BBB. Do better, take care of your customers and don’t suck

The airplane had a strange noise that was constant throughout the flight. Thankfully I had noise-cancelling over-ear headphones that muted much of it.

it was terrible. flight was cancelled hours before the flight without a given reason and no other booking available .

This was my first time on a budget airline and I couldn't even sit down all the way because my knees would embed in the seat in front of me. I'm only 6' tall with a 32" inseam. There's no upside other than y'all are cheap. I'm glad it was only a 2 hour flight. Lesson learned! I get why everybody talks down on budget airlines. The staff was outstanding, the flight went as well as possible, great pilot, great boarding, smooth sailing. Zero chance I'll be back though.

The plane was freezing and everyone had on their winter coats. I pulled out my sweaters out of my carryon to cover myself and put on an extra pair of socks. They offered NO FREE drinks or snacks on a 6 hour flight. The seats don’t have plugs or charges or any form of entertainment- so I just played my one downloaded game on my phone because I couldn’t sleep because I was too cold. Miserable flight though we landed safely.

Always comes in handy when I want a quick weekend getaway.

My luggage didn’t arrive at LAX, so that wasn’t a good experience.

I was never aware that I had to pay $100 per luggage to them on the plane that are simply carry-ons. This is discriminatory and I’m going to be alerting my entire family and friends and my Instagram following up over 75,000 of this issue and misunderstanding, including mismanaging.

Cancelled my flight last minute and did not help me rebook. It was a horrible experience.

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

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Very bad! No good service delayed my second connection flight

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

Information on your arrival and departure airports