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Cheap flights from Philadelphia to San Francisco from £99

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
26 Aug — 2 Sep1
1 adult

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 21 August 2025.

Round-trip from

£214

One-way from

£99

Popular in

December

Cheapest in

September

Average price

£299
United Airlines
  • United Airlines
  • 16/9-21/9
  • Nonstop
  • 11h 23m total
  • Philadelphia to San Francisco
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JetBlue
  • JetBlue
  • 19/9
  • 1 total stop
  • 11h 04m total
  • Philadelphia to San Francisco
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Highest demand for flights based on searches. 3% potential increase in price (£9 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Philadelphia to San Francisco

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 21 August 2025.

Tue 16/906:30PHL - SFO
Nonstop6h 02mUnited Airlines
Sun 21/921:05SFO - PHL
Nonstop5h 21mUnited Airlines
Deal found 18/8£214
Tue 23/910:20PHL - SFO
1 stop11h 13mJetBlue
Wed 24/907:10SFO - PHL
1 stop11h 40mJetBlue
Deal found 19/8£215
Thu 25/1216:15PHL - SFO
1 stop10h 15mJetBlue
Fri 2/107:30SFO - PHL
1 stop12h 19mJetBlue
Deal found 20/8£217
Sat 1/1108:15PHL - SFO
1 stop9h 36mUnited Airlines
Thu 6/1121:00SFO - PHL
Nonstop5h 18mUnited Airlines
Deal found 19/8£219
Wed 5/1119:00PHL - SFO
2 stops15h 25mDelta
Fri 7/1100:35SFO - PHL
1 stop7h 21mDelta
Deal found 21/8£220
Wed 17/907:00PHL - SFO
1 stop8h 25mDelta
Wed 24/911:59SFO - PHL
1 stop9h 55mDelta
Deal found 19/8£220
Mon 15/918:33PHL - SFO
Nonstop6h 02mUnited Airlines
Sat 20/922:45SFO - PHL
1 stop7h 48mUnited Airlines
Deal found 19/8£222
Wed 5/1119:00PHL - SFO
2 stops17h 45mDelta
Sat 8/1100:40SFO - PHL
1 stop6h 59mDelta
Deal found 20/8£223
Wed 10/1216:55PHL - SFO
1 stop8h 35mSouthwest
Tue 16/1209:25SFO - PHL
2 stops8h 50mSouthwest
Deal found 20/8£224
Wed 10/905:25PHL - SFO
1 stop7h 45mDelta
Sat 13/907:00SFO - PHL
1 stop7h 50mDelta
Deal found 19/8£225
Sat 6/915:55PHL - SFO
1 stop11h 04mJetBlue
Tue 9/908:40SFO - PHL
1 stop10h 10mJetBlue
Deal found 18/8£226
Fri 5/907:00PHL - SFO
1 stop8h 56mJetBlue
Tue 16/907:10SFO - PHL
1 stop11h 40mJetBlue
Deal found 19/8£227

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 21 August 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

Tue 14/10

09:46-14:13

1 stop7h 27m

San Francisco

Fri 17/10

00:35-10:56

1 stop7h 21m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 1/11

18:25-21:50

Nonstop6h 25m

San Francisco

Thu 6/11

21:00-05:18

Nonstop5h 18m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 20/9

06:30-09:32

Nonstop6h 02m

San Francisco

Sun 28/9

21:04-05:26

Nonstop5h 22m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 1/11

17:02-22:30

1 stop8h 28m

San Francisco

Sun 2/11

00:35-10:54

1 stop7h 19m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 17/10

18:50-23:43

1 stop7h 53m

San Francisco

Mon 3/11

00:35-10:54

1 stop7h 19m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 20/11

06:25-09:45

Nonstop6h 20m

San Francisco

Tue 25/11

21:00-05:18

Nonstop5h 18m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 6/9

07:00-12:11

1 stop8h 11m

San Francisco

Mon 15/9

00:45-10:34

1 stop6h 49m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 11/10

17:20-22:35

1 stop8h 15m

San Francisco

Mon 13/10

00:35-10:56

1 stop7h 21m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 18/10

14:25-19:48

1 stop8h 23m

San Francisco

Sat 1/11

00:35-10:54

1 stop8h 19m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 17/10

18:18-23:56

1 stop8h 38m

San Francisco

Mon 20/10

00:35-10:56

1 stop7h 21m

£214

Flights are sorted by cheapest return flights first.

Deals found on 20/8

Showing 1-10 of 20 results
1
2

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 8 August 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 £538). Flying from Philadelphia to San Francisco in July is currently the most expensive (average of £803). 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 21 August 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 2 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 25m. 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 (94%), ANA (93%) and United Airlines (87%).

  • 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 £538). Flying from Philadelphia to San Francisco in July is currently the most expensive (average of £803). 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
South San Francisco
Bodega Bay
Pacific Grove
Union City

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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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