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Cheap flights from Philadelphia to San Francisco from £108

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
24 Mar — 31 Mar1
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 22 February 2026.

Fri 17/406:12
PHL
-
SFO
Nonstop6h 18m
United Airlines
Mon 20/423:35
SFO
-
PHL
Nonstop5h 40m
United Airlines
Deal found 20/2£214
Sat 2/509:55
PHL
-
SFO
1 stop10h 46m
United Airlines
Mon 4/523:20
SFO
-
PHL
Nonstop5h 40m
United Airlines
Deal found 18/2£219
Fri 3/418:30
PHL
-
SFO
1 stop9h 29m
JetBlue
Tue 7/423:59
SFO
-
PHL
1 stop12h 56m
JetBlue
Deal found 21/2£220
Wed 25/308:21
PHL
-
SFO
Nonstop6h 31m
United Airlines
Tue 31/308:40
SFO
-
PHL
Nonstop5h 35m
United Airlines
Deal found 18/2£225
Thu 11/620:26
PHL
-
SFO
1 stop8h 16m
United Airlines
Thu 2/717:30
SFO
-
PHL
1 stop9h 01m
United Airlines
Deal found 20/2£225
Wed 5/816:33
PHL
-
SFO
1 stop10h 21m
JetBlue
Tue 11/806:00
SFO
-
PHL
1 stop10h 49m
JetBlue
Deal found 20/2£227
Fri 10/418:49
PHL
-
SFO
1 stop8h 10m
Delta
Mon 13/417:00
SFO
-
PHL
1 stop9h 59m
Delta
Deal found 20/2£229
Sat 11/419:45
PHL
-
SFO
1 stop8h 32m
United Airlines
Sat 18/423:35
SFO
-
PHL
Nonstop5h 40m
United Airlines
Deal found 21/2£232
Sat 6/618:23
PHL
-
SFO
Nonstop6h 10m
United Airlines
Sat 13/618:56
SFO
-
PHL
1 stop7h 35m
United Airlines
Deal found 19/2£233
Tue 7/414:00
PHL
-
SFO
2 stops11h 10m
Southwest
Tue 14/408:55
SFO
-
PHL
2 stops10h 05m
Southwest
Deal found 21/2£237
Wed 15/416:00
PHL
-
SFO
2 stops10h 15m
Southwest
Sun 19/423:25
SFO
-
PHL
1 stop13h 25m
Southwest
Deal found 19/2£237

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 22 February 2026.

Round-trip from

£214

One-way from

£108

Popular in

November

Cheapest in

September

Average price

£309
United Airlines
  • United Airlines
  • 27/5-6/6
  • Nonstop
  • 11h 40m total
  • Philadelphia to San Francisco
Search Deals
Frontier
  • Frontier
  • 17/3
  • 2 total stops
  • 28h 57m total
  • Philadelphia to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£9 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 February 2026
Search Deals

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 22 February 2026.
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

Wed 6/5

18:06-21:24

Nonstop6h 18m

San Francisco

Sun 10/5

13:07-21:41

Nonstop5h 34m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 14/3

18:20-21:50

Nonstop6h 30m

San Francisco

Wed 18/3

23:05-07:15

Nonstop5h 10m

£214

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 2/5

09:55-17:41

1 stop10h 46m

San Francisco

Mon 4/5

23:20-08:00

Nonstop5h 40m

£219

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 22/4

06:12-09:30

Nonstop6h 18m

San Francisco

Sun 26/4

23:52-10:28

1 stop7h 36m

£222

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 13/3

18:20-21:50

Nonstop6h 30m

San Francisco

Mon 16/3

23:59-10:14

1 stop7h 15m

£222

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 25/3

08:21-11:52

Nonstop6h 31m

San Francisco

Tue 31/3

08:40-17:15

Nonstop5h 35m

£225

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 21/3

16:31-23:19

1 stop9h 48m

San Francisco

Fri 27/3

19:19-05:41

1 stop7h 22m

£229

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 22/5

19:01-23:50

1 stop7h 49m

San Francisco

Sun 24/5

17:55-05:13

1 stop8h 18m

£229

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 31/3

12:59-20:33

1 stop10h 34m

San Francisco

Mon 6/4

19:19-05:41

1 stop7h 22m

£229

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 20/7

18:20-00:15

1 stop8h 55m

San Francisco

Fri 7/8

19:00-05:43

1 stop7h 43m

£229

Flights are sorted by cheapest return flights first.

Deals found on 18/2

Showing 1-10 of 21 results
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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 20 February 2026.

The best time to book flights from Philadelphia to San Francisco is 48 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, December is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of £84). Flying from Philadelphia to San Francisco in May is currently the most expensive (average of £134). 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 22 February 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.

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 18m. The distance between Philadelphia and San Francisco is about 2513 mi. Most flights are nonstop.

  • 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 Aer Lingus (90%), Qantas Airways (82%) and American Airlines (73%).

  • 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, December is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of £84). Flying from Philadelphia to San Francisco in May is currently the most expensive (average of £134). 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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