Cheap flights from Philadelphia to Silicon Valley

View AU$211 flight on Mon, 8 Sep. 2025Opens in a new window

Popular airlines from Philadelphia to Silicon Valley

  • American Airlines

    American Airlines

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • United

    United

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Cheap Flights from Philadelphia (ILG) to Silicon Valley (SJC)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 8 Sep. - Mon, 15 Sep.
PHL
Philadelphia
SJC
San Jose
AU$421 Return, found 23 hours ago
AU$421
Return
found 23 hours ago
Select Delta flight, departing Mon, 8 Sep. from Philadelphia to San Jose, returning Mon, 15 Sep., priced at AU$421 found 23 hours ago
American Airlines
Fri, 29 Aug. - Mon, 1 Sep.
PHL
Philadelphia
SFO
San Francisco
AU$438 Return, found 16 hours ago
AU$438
Return
found 16 hours ago
Select American Airlines flight, departing Fri, 29 Aug. from Philadelphia to San Francisco, returning Mon, 1 Sep., priced at AU$438 found 16 hours ago
American Airlines
Thu, 16 Oct. - Mon, 20 Oct.
PHL
Philadelphia
SFO
San Francisco
AU$447 Return, found 6 days ago
AU$447
Return
found 6 days ago
Select American Airlines flight, departing Thu, 16 Oct. from Philadelphia to San Francisco, returning Mon, 20 Oct., priced at AU$447 found 6 days ago
Delta
Mon, 8 Sep. - Mon, 15 Sep.
PHL
Philadelphia
SJC
San Jose
AU$452 Return, found 23 hours ago
AU$452
Return
found 23 hours ago
Select Delta flight, departing Mon, 8 Sep. from Philadelphia to San Jose, returning Mon, 15 Sep., priced at AU$452 found 23 hours ago
Alaska Airlines
Thu, 16 Oct. - Mon, 20 Oct.
PHL
Philadelphia
SFO
San Francisco
AU$477 Return, found 6 days ago
AU$477
Return
found 6 days ago
Select Alaska Airlines flight, departing Thu, 16 Oct. from Philadelphia to San Francisco, returning Mon, 20 Oct., priced at AU$477 found 6 days ago
United
Fri, 29 Aug. - Mon, 1 Sep.
PHL
Philadelphia
SFO
San Francisco
AU$605 Return, found 16 hours ago
AU$605
Return
found 16 hours ago
Select United flight, departing Fri, 29 Aug. from Philadelphia to San Francisco, returning Mon, 1 Sep., priced at AU$605 found 16 hours ago

Find the cheapest month to fly from Philadelphia (PHL) to San Jose (SJC)

October is typically the cheapest month to fly

From AU$179 - AU$586 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.