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Cheap flights from Philadelphia to San Francisco from £117

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 24/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 November 2025.

Round-trip from

£219

One-way from

£117

Popular in

November

Cheapest in

September

Average price

£342
United Airlines
  • United Airlines
  • 19/2-23/2
  • Nonstop
  • 11h 51m total
  • Philadelphia to San Francisco
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Southwest
  • Southwest
  • 29/1
  • 1 total stop
  • 11h 15m total
  • Philadelphia to San Francisco
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Highest demand for flights based on searches. 6% potential increase in price (£16 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find 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 November 2025.

Thu 18/1209:45PHL - SFO
1 stop11h 05mUnited Airlines
Sat 24/113:25SFO - PHL
Nonstop5h 27mUnited Airlines
Deal found 26/11£226
Wed 17/1206:18PHL - SFO
1 stop8h 09mDelta
Mon 19/122:54SFO - PHL
1 stop6h 56mDelta
Deal found 25/11£234
Tue 23/1206:17PHL - SFO
Nonstop6h 28mUnited Airlines
Mon 29/1222:40SFO - PHL
Nonstop5h 24mUnited Airlines
Deal found 26/11£240
Tue 9/1206:00PHL - SFO
1 stop11h 01mJetBlue
Mon 15/1208:15SFO - PHL
1 stop10h 33mJetBlue
Deal found 24/11£242
Mon 22/1206:17PHL - SFO
Nonstop6h 28mUnited Airlines
Tue 30/1222:40SFO - PHL
Nonstop5h 24mUnited Airlines
Deal found 25/11£248
Sun 14/1206:15PHL - SFO
Nonstop6h 25mUnited Airlines
Mon 29/1220:47SFO - PHL
Nonstop5h 24mUnited Airlines
Deal found 24/11£249
Wed 17/1206:18PHL - SFO
1 stop8h 09mDelta
Thu 1/105:50SFO - PHL
1 stop8h 47mDelta
Deal found 26/11£253
Fri 12/1206:15PHL - SFO
Nonstop6h 23mUnited Airlines
Thu 15/121:20SFO - PHL
1 stop9h 17mUnited Airlines
Deal found 26/11£257
Sun 21/1216:32PHL - SFO
1 stop9h 58mJetBlue
Wed 31/1207:30SFO - PHL
1 stop12h 19mJetBlue
Deal found 26/11£259
Sat 6/1207:06PHL - SFO
1 stop11h 40mAlaska Airlines
Mon 15/1216:42SFO - PHL
1 stop10h 04mAlaska Airlines
Deal found 24/11£260
Wed 17/1206:15PHL - SFO
Nonstop6h 25mUnited Airlines
Wed 24/1220:47SFO - PHL
Nonstop5h 24mUnited Airlines
Deal found 24/11£262

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 November 2025.
Use the filters below to find and compare flights from Philadelphia to San Francisco that are best for you.

Fly from

Philadelphia

Fly to

San Francisco

Route

Depart

Return

Price

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 12/2

18:20-21:50

Nonstop6h 30m

San Francisco

Sun 15/2

23:05-07:15

Nonstop5h 10m

£219

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 16/4

06:10-09:28

Nonstop6h 18m

San Francisco

Fri 17/4

00:45-11:49

1 stop8h 04m

£226

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 17/12

14:24-20:59

1 stop9h 35m

San Francisco

Sun 18/1

00:40-10:31

1 stop6h 51m

£234

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 2/3

12:16-19:54

1 stop10h 38m

San Francisco

Mon 9/3

22:50-08:50

1 stop7h 00m

£234

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 8/1

12:11-19:49

1 stop10h 38m

San Francisco

Wed 14/1

22:54-08:50

1 stop6h 56m

£234

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 16/1

19:45-01:30

1 stop8h 45m

San Francisco

Sat 17/1

00:43-11:35

1 stop7h 52m

£234

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 6/3

14:31-19:54

1 stop8h 23m

San Francisco

Fri 13/3

19:11-05:41

1 stop7h 30m

£234

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 24/1

06:00-10:54

1 stop7h 54m

San Francisco

Mon 26/1

13:20-23:53

1 stop7h 33m

£234

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 6/3

06:15-13:50

2 stops10h 35m

San Francisco

Fri 13/3

10:10-22:45

1 stop9h 35m

£238

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 21/1

13:50-22:20

2 stops11h 30m

San Francisco

Thu 22/1

07:40-22:00

2 stops11h 20m

£242

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 19 results
1
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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?

Use this chart to determine the optimal time to book a return flight from Philadelphia to San Francisco. Price data was last updated on 21 November 2025.

The best time to book flights from Philadelphia to San Francisco is 70 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, February is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of £54). Flying from Philadelphia to San Francisco in May is currently the most expensive (average of £139). 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 November 2025.

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.

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 1 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 30m. 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 Air China (89%), ANA (85%) and American Airlines (84%).

  • 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, February is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of £54). Flying from Philadelphia to San Francisco in May is currently the most expensive (average of £139). 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
South San Francisco
Bodega Bay
Pacific Grove

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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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