Earn point on your loyalty program!arrow arc left

Cheap flights from Philadelphia (PHL) to San Diego (SAN)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Philadelphia (PHL) to San Diego (SAN)

How to find the cheapest flight from Philadelphia (PHL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Philadelphia to San Diego in April , May 2026

29 Apr - 02 May $ 133.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Frontier Airlines
1 STOPS
PHL
Philadelphia
Pick dates
14 Apr - 05 May $ 453.00
PHL
Philadelphia
Alaska Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
2 STOPS
PHL
Philadelphia
Pick dates
14 Apr - 02 May $ 783.00
PHL
Philadelphia
Alaska Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
1 STOPS
PHL
Philadelphia
Pick dates

Last minute flights from Philadelphia to San Diego

29 Apr - 01 May $ 249.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Frontier Airlines
2 STOPS
PHL
Philadelphia
Pick dates
14 Apr - 30 Apr $ 523.00
PHL
Philadelphia
Alaska Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
Alaska Airlines
1 STOPS
PHL
Philadelphia
Pick dates
09 Apr - 30 Apr $ 736.00
PHL
Philadelphia
United Airlines
1 STOPS
SAN
San Diego
SAN
San Diego
United Airlines
1 STOPS
PHL
Philadelphia
Pick dates

One-way flights to San Diego from Philadelphia

8:31 PM - 7:00 AM
Frontier Airlines
1 Stops
15h 3m
PHL - SAN
$ 63
Kiwi
Pick dates
7:25 AM - 2:06 PM
Alaska Airlines
1 Stops
12h 31m
PHL - SAN
$ 241
Kiwi
Pick dates
10:33 AM - 12:35 PM
United Airlines
1 Stops
7h 42m
PHL - SAN
$ 489
Kiwi
Pick dates

How to find the cheapest flight from Philadelphia (PHL) to San Diego (SAN)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.