San Diego (SAN) to Philadelphia (PHL) cheap flight deal from $170 USD in economy class

UAUnited Airlines

Round Trip•Economy

SAN

San Diego International Airport

San Diego, United States

PHL

Philadelphia International Airport

Philadelphia, United States

$289 USD

-41%$170 USD

Verified Sep 19, 2025 at 6:34 PM

October 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29$363 30$334 1$299 2$334 3$209 4$302 5$209 6$209 7$209 8$209 9$209 10$179 11$179 12$409 13$296 14$179 15$179 16$203 17$179 18$179 19$371 20$179 21$179 22$179 23$179 24$179 25$179 26$179 27$179 28$179 29$179 30$179 31$179 1 2

Good Availability

40% of dates checked are available within 10% of the lowest price

Wednesday, October 8th, 2025

10 round-trip options

Returning

Mon, Oct 13, 2025•5 Day Trip

$367 USD

Google Flights

Returning

Tue, Oct 14, 2025•6 Day Trip

$335 USD

Google Flights

Returning

Wed, Oct 15, 2025•7 Day Trip

$331 USD

Google Flights

Returning

Thu, Oct 16, 2025•8 Day Trip

$349 USD

Google Flights

Returning

Fri, Oct 17, 2025•9 Day Trip

$209 USD

Google Flights

Returning

Sat, Oct 18, 2025•10 Day Trip

$271 USD

Google Flights

Returning

Sun, Oct 19, 2025•11 Day Trip

$407 USD

Google Flights

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Mon, Oct 20, 2025•12 Day Trip

$322 USD

Google Flights

Returning

Tue, Oct 21, 2025•13 Day Trip

$319 USD

Google Flights

Returning

Wed, Oct 22, 2025•14 Day Trip

$302 USD

Google Flights