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 6 days ago
€245
Return
found 6 days ago
Select American Airlines flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €245 found 6 days ago
American Airlines
Sat, 23 Aug - Sat, 30 Aug
PHL
Philadelphia
SAN
San Diego
€260 Return, found 10 hours ago
€260
Return
found 10 hours ago
Select American Airlines flight, departing Sat, 23 Aug from Philadelphia to San Diego, returning Sat, 30 Aug, priced at €260 found 10 hours ago
American Airlines
Sat, 23 Aug - Sat, 30 Aug
PHL
Philadelphia
SAN
San Diego
€265 Return, found 10 hours ago
€265
Return
found 10 hours ago
Select American Airlines flight, departing Sat, 23 Aug from Philadelphia to San Diego, returning Sat, 30 Aug, priced at €265 found 10 hours ago
United
Sat, 16 Aug - Sat, 23 Aug
PHL
Philadelphia
SAN
San Diego
€297 Return, found 6 days ago
€297
Return
found 6 days ago
Select United flight, departing Sat, 16 Aug from Philadelphia to San Diego, returning Sat, 23 Aug, priced at €297 found 6 days ago
Delta
Sat, 23 Aug - Sat, 30 Aug
PHL
Philadelphia
SAN
San Diego
€324 Return, found 10 hours ago
€324
Return
found 10 hours ago
Select Delta flight, departing Sat, 23 Aug from Philadelphia to San Diego, returning Sat, 30 Aug, priced at €324 found 10 hours ago
JetBlue Airways
Fri, 17 Oct - Tue, 21 Oct
PHL
Philadelphia
SAN
San Diego
€340 Return, found 16 hours ago
€340
Return
found 16 hours ago
Select JetBlue Airways flight, departing Fri, 17 Oct from Philadelphia to San Diego, returning Tue, 21 Oct, priced at €340 found 16 hours ago

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

September is typically the cheapest month to fly

From €94 - €201 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.