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203 € Cheap Flights from Philadelphia to San Diego International

Compare Philadelphia to San Diego International flight deals

Find the cheapest month or even day of the year to fly to San Diego International

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Flight deals from Philadelphia to San Diego International

Looking for a cheap last-minute deal or the best return flight from Philadelphia to San Diego International Airport? If you want to travel next month, return fares start from 203 €. Find the lowest prices on one-way and return tickets right here.
San Diego.203 € per passenger.Departing Sat, 10 Oct, returning Sat, 17 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 10 Oct, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sat, 17 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 203 €, select.
San Diego.203 € per passenger.Departing Sat, 22 Aug, returning Sat, 29 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 22 Aug, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sat, 29 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 203 €, select.
San Diego.203 € per passenger.Departing Mon, 31 Aug, returning Thu, 3 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Mon, 31 Aug, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Thu, 3 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 203 €, select.
San Diego.206 € per passenger.Departing Thu, 3 Sep, returning Tue, 8 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 3 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 8 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 206 €, select.
San Diego.220 € per passenger.Departing Thu, 20 Aug, returning Tue, 20 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 20 Aug, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 20 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 220 €, select.
San Diego.245 € per passenger.Departing Wed, 30 Sep, returning Mon, 5 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 30 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 5 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 245 €, select.
San Diego.253 € per passenger.Departing Mon, 5 Oct, returning Tue, 3 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia Trenton-Mercer on Mon, 5 Oct, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 3 Nov, arriving in Philadelphia Trenton-Mercer.Price includes taxes and charges.From 253 €, select.
San Diego.270 € per passenger.Departing Tue, 3 Nov, returning Fri, 6 Nov.Return flight with Frontier Airlines and jetBlue.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 3 Nov, arriving in San Diego International.Inbound indirect flight with jetBlue, departs from San Diego International on Fri, 6 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 270 €, select.
San Diego.289 € per passenger.Departing Tue, 5 Jan, returning Tue, 12 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Tue, 5 Jan, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Tue, 12 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 289 €, select.
San Diego.289 € per passenger.Departing Sat, 12 Dec, returning Sat, 16 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Sat, 12 Dec, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Sat, 16 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 289 €, select.
San Diego.292 € per passenger.Departing Mon, 1 Feb, returning Sat, 6 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Mon, 1 Feb, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Sat, 6 Feb, arriving in Philadelphia International.Price includes taxes and charges.From 292 €, select.
San Diego.292 € per passenger.Departing Thu, 10 Dec, returning Mon, 14 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Thu, 10 Dec, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Mon, 14 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 292 €, select.
San Diego.318 € per passenger.Departing Fri, 31 Jul, returning Tue, 4 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Fri, 31 Jul, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 4 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 318 €, select.
San Diego.345 € per passenger.Departing Sat, 21 Nov, returning Tue, 1 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Sat, 21 Nov, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Tue, 1 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 345 €, select.
San Diego.360 € per passenger.Departing Sat, 5 Sep, returning Fri, 11 Sep.Return flight with American Airlines.Outbound direct flight with American Airlines departs from Philadelphia International on Sat, 5 Sep, arriving in San Diego International.Inbound direct flight with American Airlines departs from San Diego International on Fri, 11 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 360 €, select.
San Diego.366 € per passenger.Departing Sat, 29 Aug, returning Sat, 5 Sep.Return flight with American Airlines.Outbound direct flight with American Airlines departs from Philadelphia International on Sat, 29 Aug, arriving in San Diego International.Inbound direct flight with American Airlines departs from San Diego International on Sat, 5 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 366 €, select.

Find the cheapest month to fly from Philadelphia to San Diego International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to San Diego International flights are currently cheapest in August.
Jul
Find prices
Aug
from 203 €
Sep
from 206 €
Oct
from 203 €
Nov
from 270 €
Dec
from 292 €
Jan
from 289 €
Feb
from 292 €
Mar
from 376 €
Apr
from 469 €
May
Find prices
Jun
from 858 €

Direct flights from Philadelphia to San Diego International

Philadelphia to San Diego International: Alternative routes

Compare routes from Philadelphia to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

San Diego International

4km from central San Diego
ClosestCheapest
from 203 €
Search flights

McClellan-Palomar

48km from central San Diego
from 323 €
Search flights

Philadelphia to San Diego: Flight information

The things to know before you go.
Cheapest flight found203 €
Cheapest month to flyAugust
Average flight time5 hrs, 58 mins
Most popular airlineAmerican Airlines
Average flights per week53

Finding cheap flights from Philadelphia to San Diego International: Frequently asked questions

The best price we found for a return flight from Philadelphia to San Diego International is 203 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 58 minutes is the average flight time from Philadelphia to San Diego International.
American Airlines, Qatar Airways and British Airways fly direct from Philadelphia to San Diego International.
As of July 2026, there are 53 flights per week flying from Philadelphia to San Diego International.
The cheapest month to fly from Philadelphia to San Diego International is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to San Diego International Airport on Saturday, 22 August 2026.
Yes – the average flight time is 5 hours and 58 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Philadelphia to San Diego International Airport (SAN): What you need to know

  • Get your trip started at Philadelphia International Airport (PHL), the main airport in Philadelphia. Look for flights from Philadelphia to San Diego International Airport (SAN) that leave from this terminal.

  • Expect to be in the air for 5 hours 50 minutes. That's the average journey time for a direct Philadelphia to San Diego International Airport flight.

  • San Diego is three hours behind Philadelphia. San Diego International Airport is located in San Diego, which follows the UTC-8 timezone.

  • Philadelphia International Airport (PHL) to San Diego International Airport (SAN) is the most popular route. There are 20 direct weekly flights to choose from. If you prefer a later start to the day, hop on the last flight with American Airlines at 7:10pm. Choose the first PHL to SAN departure with American Airlines at 8:14am if getting there sooner works for you.

  • Your flight from Philadelphia to SAN won't wait if you're running late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • With more people on the move during busy periods like July, be at your terminal even earlier. Two hours for domestic flights and up to four for international journeys will help you stay ahead of the crowds. Remember things also get busy during major holidays like Christmas.

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Philadelphia International Airport (PHL) is a convenient option for travelling directly to your destination. Nonstop flights from Philadelphia to San Diego International Airport (SAN) take off from this terminal.

  • When taking off from PHL, you can catch a direct flight from Philadelphia to San Diego International Airport with American Airlines.

  • American Airlines is the airline most travellers choose for flights from PHL to SAN.

  • The carrier with the most reliable on-time performance on this route is American Airlines. Its services arrive without delay 72.7% of the time.

  • The journey from central Philadelphia to PHL takes about 30 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 18 kilometres in 20 minutes or so, depending on traffic.

  • In search of a comfortable hotel close to Philadelphia International Airport? If you've booked an early flight from Philadelphia to San Diego International Airport, these stays will put you conveniently close to check-in:

  • 77% of flights leaving from Philadelphia International Airport make it to their destination on schedule.

  • You'll find PHL at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

  • Using public transport, you can travel from central Philadelphia to TTN in about 1 hour 35 minutes. The terminal is roughly 48 kilometres away, and making the journey by car will take approximately 40 minutes.

  • Taking off bright and early? You might like to check in to one of these hotels near Trenton-Mercer Airport the day before your Philadelphia to SAN flight:

  • Trenton-Mercer Airport has an on-time performance of 76%. This figure reflects how frequently flights that take off from this airport arrive on time.

  • TTN is located at Scotch Road, Terminal Building.

About San Diego International Airport (SAN)

  • If you're coming in on a late flight from Philadelphia to San Diego International Airport, few things top the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these hotels near SAN:

  • Get the best deal by reserving your ride around two weeks before your Philadelphia to San Diego International Airport flight.

  • SAN is located at N Harbour Dr.

Getting from San Diego International Airport (SAN) to central San Diego

  • Central San Diego is around 5 kilometres from San Diego International Airport and takes about 15 minutes to reach by car. See what your options are for making the trip into the city, whether that's with a taxi, car hire or ride-share.

  • Travelling by public transport takes roughly 25 minutes.

How to find the cheapest flights from Philadelphia to San Diego International Airport (SAN)

  • The cheapest price we've found for a one-way ticket from Philadelphia to San Diego International Airport is 103 €. For a return flight on this route, the best price is 203 €. Depending on the availability when you book, these fares can change.

  • To pick up cheap flights from Philadelphia to SAN, book ahead. Airlines usually offer lower prices when flights first go on sale.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll show you the cheapest price across every month when searching for your Philadelphia to San Diego International Airport ticket.

  • You don't need to search every day to find out if fares have dropped when you create a Price Alert. We'll let you know when a lower fare pops up on plane tickets from Philadelphia to SAN.

  • Hunt down a great price on a flight from Philadelphia to San Diego International Airport with the help of the filters. Choose your ideal departure and arrival times, number of stops and airlines. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest.'

The best time to fly from Philadelphia to San Diego International Airport (SAN)

  • December is the quietest month for flights from Philadelphia to San Diego International Airport (SAN), while July is the busiest. Figure out the ideal time to go to San Diego based on whether you prefer a laid-back vibe or a lively atmosphere.

  • Book a Philadelphia to SAN plane ticket departing in August if you want to explore the city during its warmest month. You can expect temperatures in San Diego to range from 16ºC (61ºF) to 27ºC (81ºF).

  • February sees temperatures of between 8ºC (46ºF) and 22ºC (72ºF). Search for cheap tickets from Philadelphia to San Diego International Airport around that time if you want to travel when it's cooler.

More about San Diego

  • Once you've booked your flight from Philadelphia to San Diego International Airport, find a hotel that's got location and comfort covered. Make one of these options your base for exploring San Diego:

  • There are plenty of awesome things to do in San Diego when you're ready to go sightseeing. Head straight for San Diego Zoo followed by San Diego Balboa Park and USS Midway Museum.

Explore more of the United States

  • You've done San Diego, now it's time to discover more of the United States. Travel around 177 kilometres northwest to Los Angeles to check off its popular sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, you'll have a full itinerary ahead.

  • Around 145 kilometres northwest of San Diego, Long Beach is another essential stop in the United States. Get a taste of what this destination has to offer at The Queen Mary, Museum of Latin American Art (MOLAA) and Long Beach Lighthouse.

Plan the rest of your trip from Philadelphia to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.