Question 1

How popular is this Philadelphia to San Francisco flight route?

Accepted Answer

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.

Question 2

What are the cheapest airlines flying from Philadelphia to San Francisco round-trip?

Accepted Answer

United Airlines, at £211, was found to be the cheapest airline from Philadelphia to San Francisco.Alternate airlines flying return to your destination include American Airlines and JetBlue. United Airlines is priced at 27% lower than the current average price of a flight leaving 3 months from now.

Question 3

What are the cheapest airlines to fly from Philadelphia to San Francisco one-way?

Accepted Answer

The cheapet airlines for a one-way flight from Philadelphia to San Francisco are Delta (£116), Southwest (£117), and Frontier (£123).

Question 4

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

Accepted Answer

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.

Question 5

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

Accepted Answer

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.

Question 6

Weekly flight availability from Philadelphia to San Francisco

Accepted Answer

The most flights from PHL to SFO are scheduled on a Tuesday (17 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Question 9

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

Accepted Answer

The top 3 most reliable airlines when flying from Philadelphia to San Francisco are United Airlines (89%), Air China (88%) and ANA (83%).

Question 10

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

Accepted Answer

Users have found that booking a flight from Philadelphia to San Francisco at least 45 days early can save you up to 67% on average compared to booking a flight this week. If booking 45 days before your flight isn’t an option for you, users have found flights from Philadelphia to San Francisco for as little as £322 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £416 for flights departing within the next 3 days.

Question 11

What is the cheapest month to fly from Philadelphia to San Francisco?

Accepted Answer

Our data shows that September tends to be the cheapest month to fly to San Francisco from Philadelphia. Users have commonly found prices around £290 for the month, but tickets can be as low as £153. Due to multiple factors, prepare for potentially higher prices in December.

Question 12

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

Accepted Answer

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.

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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.

Question 15

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

Accepted Answer

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.

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Round-trip from	£211
One-way from	£116
Popular in	December
Cheapest in	September
Average price	£295

Cheap flights from Philadelphia to San Francisco from £116

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Philadelphia to San Francisco

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Find flight deals from Philadelphia to San Francisco

Cheapest flights from Philadelphia to San FranciscoExplore 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 3 July 2025.

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 3 July 2025.

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

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.

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 27 June 2025.

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

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 3 July 2025.

Weekly flight availability from Philadelphia to San Francisco

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

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from Philadelphia to San Francisco, such as Alaska Airlines, Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the cheapest airlines flying from Philadelphia to San Francisco round-trip?

What are the cheapest airlines to fly from Philadelphia to San Francisco one-way?

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

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

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

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

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

Travelling to a place near Philadelphia?

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

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

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

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

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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 3 July 2025.