Cheap Flights from Philadelphia to San Diego

View €123 flight on Mon, 25 Aug 2025Opens in a new window

Popular airlines from Philadelphia to San Diego

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Cheap flights from Philadelphia to San Diego (ILG-SAN)

Prices were available within the past 7 days and start at €123 for one-way flights and €245 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 16 Aug - Sat, 23 Aug
PHL
Philadelphia
SAN
San Diego
€245 Return, found 5 days ago
€245
Return
found 5 days ago
Select American Airlines flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €245 found 5 days ago
United
Sat, 16 Aug - Sat, 23 Aug
PHL
Philadelphia
SAN
San Diego
€297 Return, found 5 days ago
€297
Return
found 5 days ago
Select United flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €297 found 5 days ago
American Airlines
Sat, 16 Aug - Sat, 23 Aug
PHL
Philadelphia
SAN
San Diego
€317 Return, found 5 days ago
€317
Return
found 5 days ago
Select American Airlines flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €317 found 5 days ago
American Airlines
Sat, 16 Aug - Sat, 23 Aug
PHL
Philadelphia
SAN
San Diego
€325 Return, found 5 days ago
€325
Return
found 5 days ago
Select American Airlines flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €325 found 5 days ago
United
Sat, 16 Aug - Sat, 23 Aug
PHL
Philadelphia
SAN
San Diego
€334 Return, found 5 days ago
€334
Return
found 5 days ago
Select United flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €334 found 5 days ago
Delta
Sat, 16 Aug - Sat, 23 Aug
PHL
Philadelphia
SAN
San Diego
€363 Return, found 5 days ago
€363
Return
found 5 days ago
Select Delta flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €363 found 5 days ago

Find the cheapest month to fly from Philadelphia (PHL) to San Diego (SAN)

September is typically the cheapest month to fly

From €95 - €198 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.