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Flight tickets from Philadelphia to San Diego from ₹ 8,148

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

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Flight deals from Philadelphia to San Diego

Looking for a cheap last-minute deal or the best return flight from Philadelphia to San Diego? If you want to travel next month, return fares start from ₹ 19,831. Find the lowest prices on one-way and return tickets right here.
San Diego.₹ 8,118 per passenger.Departing Tue, 26 May.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 26 May, arriving in San Diego International.Price includes taxes and charges.From ₹ 8,118, select.
San Diego.₹ 9,948 per passenger.Departing Tue, 16 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 16 Jun, arriving in San Diego International.Price includes taxes and charges.From ₹ 9,948, select.
San Diego.₹ 10,445 per passenger.Departing Tue, 14 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 14 Jul, arriving in San Diego International.Price includes taxes and charges.From ₹ 10,445, select.
San Diego.₹ 11,798 per passenger.Departing Sat, 29 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 29 Aug, arriving in San Diego International.Price includes taxes and charges.From ₹ 11,798, select.
San Diego.₹ 12,373 per passenger.Departing Fri, 4 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Fri, 4 Sep, arriving in San Diego International.Price includes taxes and charges.From ₹ 12,373, select.
San Diego.₹ 20,694 per passenger.Departing Fri, 16 Oct.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Fri, 16 Oct, arriving in San Diego International.Price includes taxes and charges.From ₹ 20,694, select.
San Diego.₹ 22,200 per passenger.Departing Thu, 12 Nov.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Thu, 12 Nov, arriving in San Diego International.Price includes taxes and charges.From ₹ 22,200, select.
San Diego.₹ 39,469 per passenger.Departing Sat, 26 Dec.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Sat, 26 Dec, arriving in San Diego International.Price includes taxes and charges.From ₹ 39,469, select.
San Diego.₹ 45,308 per passenger.Departing Sat, 13 Jun.One-way flight with American Airlines.Outbound direct flight with American Airlines departs from Philadelphia International on Sat, 13 Jun, arriving in San Diego International.Price includes taxes and charges.From ₹ 45,308, select.
San Diego.₹ 45,381 per passenger.Departing Wed, 27 May.One-way flight with American Airlines.Outbound direct flight with American Airlines departs from Philadelphia International on Wed, 27 May, arriving in San Diego International.Price includes taxes and charges.From ₹ 45,381, select.
San Diego.₹ 50,545 per passenger.Departing Fri, 15 Jan.One-way flight with United.Outbound indirect flight with United, departs from Philadelphia International on Fri, 15 Jan, arriving in San Diego International.Price includes taxes and charges.From ₹ 50,545, select.

Find the cheapest month to fly from Philadelphia to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to San Diego flights are currently cheapest in May.
May
from ₹ 8,118
Jun
from ₹ 9,948
Jul
from ₹ 10,445
Aug
from ₹ 11,798
Sep
from ₹ 12,373
Oct
from ₹ 20,694
Nov
from ₹ 22,200
Dec
from ₹ 39,469
Jan
from ₹ 50,545
Feb
Find prices
Mar
Find prices
Apr
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Direct flights from Philadelphia to San Diego

Alternative Philadelphia to San Diego routes

Looking for the cheapest, fastest or easiest route from Philadelphia to San Diego? You could fly into the following airports instead.

San Diego International

4km from central San Diego
ClosestCheapest
from ₹ 8,118
Search flights

McClellan-Palomar

48km from central San Diego
from ₹ 24,861
Search flights

Philadelphia to San Diego: Flight information

The things to know before you go.
Cheapest flight found₹ 8,118
Cheapest month to flyMay
Average flight time5 hrs, 57 mins
Most popular airlineAmerican Airlines
Average flights per week61

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

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Philadelphia to San Diego is ₹ 17,546. 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 57 minutes is the average flight time from Philadelphia to San Diego.
American Airlines, Qatar Airways and Iberia fly direct from Philadelphia to San Diego.
As of May 2026, there are 61 flights per week flying from Philadelphia to San Diego.
The cheapest month to fly from Philadelphia to San Diego is usually May.
If you're flying from Philadelphia, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from ₹ 17,546.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to San Diego on Tuesday, 19 May 2026.
Yes – the average flight time is 5 hours and 57 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 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.
In May, the average temperature is usually around 17°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
The cheapest airline that flies to San Diego is Frontier Airlines. And the cheapest airline that flies to McClellan-Palomar Airport is American Airlines.

Flying from Philadelphia to San Diego: what you need to know

  • Start your trip planning by checking out the departure points for your flight from Philadelphia to San Diego. Explore the options for leaving from Philadelphia International Airport (PHL) or Trenton-Mercer Airport (TTN), two of the city's main airports.

  • San Diego International Airport (SAN) and McClellan-Palomar Airport (CLD) are the chief entry points to San Diego.

  • The average duration of a direct Philadelphia to San Diego flight is 5 hours 50 minutes.

  • San Diego is three hours behind Philadelphia and observes the UTC-7 timezone.

  • The busiest route for flights from Philadelphia to San Diego is from Philadelphia International Airport (PHL) to San Diego International Airport (SAN). You can choose from 20 services every week between these two airports. If you want to head off as soon as possible, the earliest flight from PHL to SAN is the 08:14 American Airlines service. If you prefer to travel later, the final departure is at 19:10 with American Airlines.

  • Give yourself enough time to get on your Philadelphia to San Diego flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months such as August, it's a good idea to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead of an international flight whenever you're travelling during peak periods in general.

How to find the cheapest flights from Philadelphia to San Diego

  • Currently, ₹ 8,148 is the lowest price we've seen for a one-way ticket from Philadelphia to San Diego. The cheapest price for a return flight is ₹ 17,546. Remember fares can change due to demand at the time of booking.

  • Book two months before you want to travel. Pricing trends show that this is the ideal window for finding cheap Philadelphia to San Diego flights.

  • Plan your trip for May. That's the best month for scoring an awesome deal on plane tickets from Philadelphia to San Diego. If you're flexible with your dates, use the 'Whole month' tool to see the lowest price across each month.

  • Finding a cheap flight from Philadelphia to San Diego couldn't be easier with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when there's a better deal.

  • Pick your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your Philadelphia to San Diego flight results by 'Cheapest,' 'Fastest' or 'Best.'

Flying from Philadelphia

Philadelphia International Airport (PHL)

  • Jet off from Philadelphia International Airport (PHL) on a nonstop flight from Philadelphia to San Diego. From PHL, you can fly straight to San Diego International Airport (SAN).

  • Keep an eye out for promotions with American Airlines. This airline offers direct Philadelphia to San Diego plane tickets out of PHL.

  • The journey from central Philadelphia to PHL takes about 45 minutes on public transport. If you drive, ride-share or take a cab, you'll cover the 11 kilometres in 15 minutes or so, depending on traffic conditions.

  • After a leisurely start to your trip? Stay near Philadelphia International Airport. Whether you've booked an early flight from Philadelphia to San Diego or just don't want to be rushed, these hotels are the answer:

  • Of all flights departing from Philadelphia International Airport, 78.93% land on time at their destination.

  • You'll find PHL at 8500 Essington Ave.

Arriving in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) is approximately 5 kilometres from the centre of San Diego. If you're catching a cab or a ride-share, the drive takes around 10 minutes.

  • If you're taking public transport, expect a journey time of roughly 20 minutes.

  • If you're coming in on a late flight from Philadelphia to San Diego, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and resting soon after at one of these hotels near SAN:

  • Grab a San Diego International Airport rental car and explore San Diego and beyond with your own wheels. Thrifty, Dollar and Budget are well-known companies you can book with here.

  • Secure the lowest price by booking your vehicle from San Diego International Airport around two weeks ahead of your departure.

  • SAN is located at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • The centre of San Diego is about 48 kilometres from McClellan-Palomar Airport (CLD). As soon as your flight from Philadelphia to San Diego has touched down and you've made your way to arrivals, the drive should take about 40 minutes.

  • If you're catching public transport, it'll take around 2 hours 15 minutes.

  • No need to worry about public transport schedules or waiting forever for a cab. Pick up a McClellan-Palomar Airport rental car and blaze your own trail. Compare offers from Budget, Hertz and Avis.

  • Generally, the earlier you book, the better the prices and vehicle selection. Secure your ride from CLD the moment you know your dates.

Best time to go to San Diego

  • July is the most popular month for flights from Philadelphia to San Diego. To avoid the crowds, head to San Diego in May.

  • When booking your Philadelphia to San Diego tickets, consider the kind of weather you prefer. August is the warmest month in San Diego, with temperatures ranging from 17ºC to 28ºC.

  • If you want to travel in cooler conditions, search for a cheap flight from Philadelphia to San Diego in February when temperatures average between 7ºC and 23ºC.

More about San Diego

Explore more of United States

  • San Diego will leave a lasting impression, but there are so many other parts of United States just waiting to be discovered. About 177 kilometres north-west of San Diego, a visit to Los Angeles will keep you on the move. Check out popular attractions like Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • If there's time to check out another major destination in United States, consider Phoenix, about 483 kilometres east of San Diego. Desert Botanical Garden, Heard Museum and Papago Park are the start of reasons to visit.

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 45 days.