Flights from Philadelphia to Foster City

Cheapest flights from Philadelphia

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 11 - Wed, Aug 20

PHL

Philadelphia Intl.

OAK

Oakland Intl.

$258 Roundtrip, found 1 day ago

$258

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Mon, Aug 11 from Philadelphia Intl. to Oakland Intl., returning Wed, Aug 20, priced at $258 found 1 day ago

Mon, Aug 11 - Thu, Aug 21

PHL

Philadelphia Intl.

OAK

Oakland Intl.

$265 Roundtrip, found 1 day ago

$265

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Mon, Aug 11 from Philadelphia Intl. to Oakland Intl., returning Thu, Aug 21, priced at $265 found 1 day ago

Tue, Jul 1 - Mon, Jul 7

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$270 Roundtrip, found 2 days ago

$270

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Tue, Jul 1 from Philadelphia Intl. to San Francisco Intl., returning Mon, Jul 7, priced at $270 found 2 days ago

Sat, Jul 12 - Tue, Jul 15

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$270 Roundtrip, found 2 days ago

$270

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Jul 12 from Philadelphia Intl. to San Francisco Intl., returning Tue, Jul 15, priced at $270 found 2 days ago

Sat, Aug 16 - Wed, Aug 20

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$274 Roundtrip, found 1 day ago

$274

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Philadelphia Intl. to San Francisco Intl., returning Wed, Aug 20, priced at $274 found 1 day ago

Sat, Aug 16 - Wed, Aug 20

PHL

Philadelphia Intl.

OAK

Oakland Intl.

$276 Roundtrip, found 1 day ago

$276

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sat, Aug 16 from Philadelphia Intl. to Oakland Intl., returning Wed, Aug 20, priced at $276 found 1 day ago

Wed, Jul 9 - Sat, Jul 19

PHL

Philadelphia Intl.

SJC

Norman Y. Mineta San Jose Intl.

$277 Roundtrip, found 2 days ago

$277

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Jul 9 from Philadelphia Intl. to Norman Y. Mineta San Jose Intl., returning Sat, Jul 19, priced at $277 found 2 days ago

Thu, Jul 10 - Thu, Jul 17

PHL

Philadelphia Intl.

SJC

Norman Y. Mineta San Jose Intl.

$277 Roundtrip, found 2 days ago

$277

Roundtrip

found 2 days ago

Select American Airlines flight, departing Thu, Jul 10 from Philadelphia Intl. to Norman Y. Mineta San Jose Intl., returning Thu, Jul 17, priced at $277 found 2 days ago

Sun, Aug 31 - Thu, Oct 2

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$278 Roundtrip, found 6 days ago

$278

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Aug 31 from Philadelphia Intl. to San Francisco Intl., returning Thu, Oct 2, priced at $278 found 6 days ago

Mon, Aug 11 - Fri, Aug 22

PHL

Philadelphia Intl.

OAK

Oakland Intl.

$282 Roundtrip, found 1 day ago

$282

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Mon, Aug 11 from Philadelphia Intl. to Oakland Intl., returning Fri, Aug 22, priced at $282 found 1 day ago

Thu, Jul 10 - Thu, Jul 17

PHL

Philadelphia Intl.

SJC

Norman Y. Mineta San Jose Intl.

$282 Roundtrip, found 2 days ago

$282

Roundtrip

found 2 days ago

Select United flight, departing Thu, Jul 10 from Philadelphia Intl. to Norman Y. Mineta San Jose Intl., returning Thu, Jul 17, priced at $282 found 2 days ago

Sat, Aug 16 - Thu, Aug 21

PHL

Philadelphia Intl.

OAK

Oakland Intl.

$283 Roundtrip, found 1 day ago

$283

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sat, Aug 16 from Philadelphia Intl. to Oakland Intl., returning Thu, Aug 21, priced at $283 found 1 day ago

Sat, Aug 16 - Thu, Aug 21

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$284 Roundtrip, found 1 day ago

$284

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Philadelphia Intl. to San Francisco Intl., returning Thu, Aug 21, priced at $284 found 1 day ago

Tue, Jul 1 - Sat, Jul 5

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$289 Roundtrip, found 2 days ago

$289

Roundtrip

found 2 days ago

Select United flight, departing Tue, Jul 1 from Philadelphia Intl. to San Francisco Intl., returning Sat, Jul 5, priced at $289 found 2 days ago

Sat, Aug 16 - Sat, Aug 16

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$290 Roundtrip, found 1 day ago

$290

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Sat, Aug 16 from Philadelphia Intl. to San Francisco Intl., returning Sat, Aug 16, priced at $290 found 1 day ago

Sat, Aug 30 - Fri, Oct 3

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$291 Roundtrip, found 6 days ago

$291

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sat, Aug 30 from Philadelphia Intl. to San Francisco Intl., returning Fri, Oct 3, priced at $291 found 6 days ago

Wed, Sep 3 - Wed, Oct 1

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$293 Roundtrip, found 6 days ago

$293

Roundtrip

found 6 days ago

Select JetBlue Airways flight, departing Wed, Sep 3 from Philadelphia Intl. to San Francisco Intl., returning Wed, Oct 1, priced at $293 found 6 days ago

Tue, Sep 2 - Thu, Oct 2

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$294 Roundtrip, found 6 days ago

$294

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Sep 2 from Philadelphia Intl. to San Francisco Intl., returning Thu, Oct 2, priced at $294 found 6 days ago

Sun, Aug 31 - Mon, Sep 29

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$308 Roundtrip, found 6 days ago

$308

Roundtrip

found 6 days ago

Select Hawaiian Airlines flight, departing Sun, Aug 31 from Philadelphia Intl. to San Francisco Intl., returning Mon, Sep 29, priced at $308 found 6 days ago

Tue, Sep 2 - Thu, Oct 2

PHL

Philadelphia Intl.

SFO

San Francisco Intl.

$470 Roundtrip, found 6 days ago

$470

Roundtrip

found 6 days ago

Select Alaska Airlines flight, departing Tue, Sep 2 from Philadelphia Intl. to San Francisco Intl., returning Thu, Oct 2, priced at $470 found 6 days ago