Flights to Silicon Valley from Philadelphia - ￥16,330

View ￥16,330 flight on Tue, Sep 16, 2025Opens in a new window

Popular airlines from Philadelphia to Silicon Valley

  • Peach

    Peach

  • Skymark Airlines

    Skymark Airlines

  • All Nippon Airways

    All Nippon Airways

  • Japan Airlines

    Japan Airlines

  • Jetstar Japan

    Jetstar Japan

  • Solaseed Air

    Solaseed Air

  • STARFLYER

    STARFLYER

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ￥16,330 for one-way flights and ￥42,600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Nov 6 - Sun, Nov 9
PHL
Philadelphia
SFO
San Francisco
￥42,600 Roundtrip, found 15 hours ago
￥42,600
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Thu, Nov 6 from Philadelphia to San Francisco, returning Sun, Nov 9, priced at ￥42,600 found 15 hours ago
Delta
Thu, Sep 4 - Sun, Sep 7
PHL
Philadelphia
SFO
San Francisco
￥45,590 Roundtrip, found 15 hours ago
￥45,590
Roundtrip
found 15 hours ago
Select Delta flight, departing Thu, Sep 4 from Philadelphia to San Francisco, returning Sun, Sep 7, priced at ￥45,590 found 15 hours ago
American Airlines
Thu, Aug 7 - Wed, Aug 13
PHL
Philadelphia
SFO
San Francisco
￥46,640 Roundtrip, found 4 days ago
￥46,640
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Aug 7 from Philadelphia to San Francisco, returning Wed, Aug 13, priced at ￥46,640 found 4 days ago
American Airlines
Thu, Sep 4 - Sun, Sep 7
PHL
Philadelphia
SFO
San Francisco
￥47,110 Roundtrip, found 15 hours ago
￥47,110
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Thu, Sep 4 from Philadelphia to San Francisco, returning Sun, Sep 7, priced at ￥47,110 found 15 hours ago
American Airlines
Thu, Aug 7 - Wed, Aug 13
PHL
Philadelphia
SFO
San Francisco
￥48,070 Roundtrip, found 4 days ago
￥48,070
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Aug 7 from Philadelphia to San Francisco, returning Wed, Aug 13, priced at ￥48,070 found 4 days ago
United
Thu, Aug 7 - Wed, Aug 13
PHL
Philadelphia
SFO
San Francisco
￥56,960 Roundtrip, found 4 days ago
￥56,960
Roundtrip
found 4 days ago
Select United flight, departing Thu, Aug 7 from Philadelphia to San Francisco, returning Wed, Aug 13, priced at ￥56,960 found 4 days ago

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

October is typically the cheapest month to fly

From ￥17,116 - ￥59,664 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.