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Cheap flights from Philadelphia to San Francisco from £137

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
26 Jun — 3 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Philadelphia to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Philadelphia to San Francisco
Explore the most affordable flight options available from Philadelphia to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 May 2026.

Thu 10/916:48
PHL
-
SFO
1 stop9h 40m
Alaska Airlines
Wed 16/916:51
SFO
-
PHL
1 stop9h 49m
Alaska Airlines
Deal found 26/5£259
Fri 26/606:00
PHL
-
SFO
Nonstop5h 58m
United Airlines
Fri 3/717:30
SFO
-
PHL
1 stop9h 01m
United Airlines
Deal found 27/5£264
Fri 24/706:00
PHL
-
SFO
1 stop8h 38m
United Airlines
Sun 26/723:20
SFO
-
PHL
Nonstop5h 30m
United Airlines
Deal found 27/5£267
Sat 12/907:00
PHL
-
SFO
1 stop9h 03m
Alaska Airlines
Sat 12/915:26
SFO
-
PHL
1 stop11h 14m
Alaska Airlines
Deal found 26/5£270
Tue 8/907:00
PHL
-
SFO
1 stop8h 30m
Delta
Mon 14/922:10
SFO
-
PHL
1 stop8h 18m
Delta
Deal found 26/5£274
Tue 28/718:40
PHL
-
SFO
1 stop8h 35m
Southwest
Wed 5/806:50
SFO
-
PHL
2 stops10h 45m
Southwest
Deal found 26/5£278
Tue 28/716:35
PHL
-
SFO
2 stops9h 45m
Southwest
Tue 4/806:50
SFO
-
PHL
2 stops11h 05m
Southwest
Deal found 26/5£281
Tue 28/716:35
PHL
-
SFO
2 stops9h 45m
Southwest
Sun 2/822:50
SFO
-
PHL
1 stop11h 30m
Southwest
Deal found 24/5£282
Wed 1/705:15
PHL
-
SFO
1 stop7h 35m
Southwest
Wed 8/712:10
SFO
-
PHL
2 stops9h 55m
Southwest
Deal found 27/5£285
Thu 8/1018:36
PHL
-
SFO
Nonstop6h 03m
United Airlines
Wed 14/1008:50
SFO
-
PHL
Nonstop5h 40m
United Airlines
Deal found 26/5£286
Sat 27/606:00
PHL
-
SFO
Nonstop5h 58m
United Airlines
Fri 3/723:20
SFO
-
PHL
Nonstop5h 30m
United Airlines
Deal found 27/5£287
Thu 11/606:00
PHL
-
SFO
Nonstop5h 58m
United Airlines
Wed 17/616:48
SFO
-
PHL
Nonstop5h 41m
United Airlines
Deal found 27/5£289

Find flight deals from Philadelphia to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 May 2026.

Round-trip from

£259

One-way from

£137

Popular in

November

Cheapest in

September

Average price

£322

Good round-trip deal

£949 or less
United Airlines
  • United Airlines
  • 2/10-5/10
  • Nonstop
  • 11h 32m total
  • Philadelphia to San Francisco
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 30/6
  • 1 total stop
  • 10h 58m total
  • Philadelphia to San Francisco
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£4 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
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Price to beat on a round-trip flight from Philadelphia to San Francisco.
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Philadelphia to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 May 2026.
Use the filters below to find and compare flights from Philadelphia to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 23/11

09:30-12:48

Nonstop6h 18m

San Francisco

Tue 1/12

23:05-07:45

Nonstop5h 40m

£259

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 17/9

16:48-23:28

1 stop9h 40m

San Francisco

Sun 27/9

06:03-05:40

1 stop20h 37m

£259
Fastest return journey

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 15/10

06:00-09:03

Nonstop6h 03m

San Francisco

Sat 17/10

23:20-07:49

Nonstop5h 29m

£259

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 25/6

06:00-08:58

Nonstop5h 58m

San Francisco

Thu 2/7

16:42-01:23

Nonstop5h 41m

£259

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 17/6

06:00-08:58

Nonstop5h 58m

San Francisco

Sun 21/6

16:48-01:29

Nonstop5h 41m

£259

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 15/9

09:27-12:30

Nonstop6h 03m

San Francisco

Sun 20/9

08:50-17:30

Nonstop5h 40m

£259

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 19/6

18:23-21:33

Nonstop6h 10m

San Francisco

Wed 24/6

23:20-07:50

Nonstop5h 30m

£259

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 16/9

06:16-11:39

1 stop8h 23m

San Francisco

Sun 20/9

08:50-17:30

Nonstop5h 40m

£267

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 7/8

06:00-11:38

1 stop8h 38m

San Francisco

Wed 12/8

08:50-17:30

Nonstop5h 40m

£267

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 3/10

07:20-12:27

1 stop8h 07m

San Francisco

Thu 8/10

06:00-18:19

1 stop9h 19m

£274

Flights are sorted by cheapest return flights first.

Deals found on 22/5

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Philadelphia to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Philadelphia with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to San Francisco

How far ahead should I book a flight from Philadelphia to San Francisco?

The best time to book flights from Philadelphia to San Francisco is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Philadelphia to San Francisco?

Currently, September is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of £263). Flying from Philadelphia to San Francisco in November is currently the most expensive (average of £337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to SFO?

Find hourly flight availability from Philadelphia to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 May 2026.

When flying from Philadelphia to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Philadelphia to San Francisco?

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Philadelphia to San Francisco flight route?

    This flight path from Philadelphia to San Francisco was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Philadelphia to San Francisco?

    Departing from Philadelphia to San Francisco will take you 6h 03m. The distance between Philadelphia and San Francisco is about 2513 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from Philadelphia to San Francisco?

    The top 3 most reliable airlines when flying from Philadelphia to San Francisco are Qatar Airways (100%), Air China (100%) and Qantas Airways (96%).

  • What are the cheapest flights from Philadelphia to San Francisco?

    The cheapest flight price from Philadelphia to San Francisco is £943. On average you can expect to pay £949. The most popular route, (Philadelphia - San Francisco), can usually be booked for £295.

  • Can I find deals for flights from Philadelphia to San Francisco that include hotel bookings?

    Yes. In addition to deals on Philadelphia to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to San Francisco.

  • Can I find deals for business class flights from Philadelphia to San Francisco?

    Yes. Cheapflights offers flight deals from Philadelphia to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to San Francisco?

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of £263). Flying from Philadelphia to San Francisco in November is currently the most expensive (average of £337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale

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How does Cheapflights help users find flights from Philadelphia to San Francisco?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Philadelphia to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to San Francisco?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Philadelphia to San Francisco for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Philadelphia to San Francisco with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Philadelphia to San Francisco, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Philadelphia to San Francisco become cheaper?

Yes, Cheapflights offers price alerts on Philadelphia to San Francisco flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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