Cheap Flights from Philadelphia to San Francisco International

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Compare Philadelphia to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

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Flight deals from Philadelphia to San Francisco International

Looking for a cheap last-minute deal or the best return flight from Philadelphia to San Francisco International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Philadelphia to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to San Francisco International flights are currently cheapest in May.

Direct flights from Philadelphia to San Francisco International

Philadelphia to San Francisco International: Alternative routes

Compare routes from Philadelphia to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

Philadelphia to San Francisco: Flight information

The things to know before you go.
Cheapest flight found157 €
Cheapest month to flyMay
Average flight time6 hrs, 14 mins
Most popular airlineAmerican Airlines
Average flights per week136

Finding cheap flights from Philadelphia to San Francisco International: Frequently asked questions

The best price we found for a return flight from Philadelphia to San Francisco International is 157 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
6 hours and 14 minutes is the average flight time from Philadelphia to San Francisco International.
American Airlines, United and Qatar Airways fly direct from Philadelphia to San Francisco International.
As of April 2025, there are 136 flights per week flying from Philadelphia to San Francisco International.
The cheapest month to fly from Philadelphia to San Francisco International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to San Francisco International Airport on Saturday, 17 May 2025.
Yes – the average flight time is 6 hours and 14 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Philadelphia to San Francisco International Airport (SFO): what you need to know

  • Your next great adventure starts at one of Philadelphia's main airports, Philadelphia International Airport (PHL) or Trenton-Mercer Airport (TTN). Check out your options for booking a flight from Philadelphia to San Francisco International Airport (SFO) leaving from either of these bases.

  • Around 6 hours 10 minutes is how long you can expect to be in the air on a direct flight from Philadelphia to San Francisco International Airport.

  • The timezone in San Francisco is UTC-7, which is 3 hours behind Philadelphia. San Francisco International Airport is located in San Francisco.

  • With 43 direct flights a week between the two airports, Philadelphia International Airport (PHL) to San Francisco International Airport (SFO) is the busiest route. United operates the earliest flight at 06:00. If you'd like to get more out of your day before leaving, the latest departure from PHL to SFO is with American Airlines at 20:45.

  • Your flight from Philadelphia to SFO won't wait if you're late, so be at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • With more people on the move during busy periods like August, be at your terminal even earlier. Two hours for domestic flights and as much as four for international journeys will help you stay ahead of the crowds. Remember things also get busy during major holidays like Christmas and local events or festivals.

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Philadelphia International Airport (PHL) is a convenient option for travelling directly to your destination. Nonstop flights from Philadelphia to San Francisco International Airport (SFO) leave from this terminal.

  • United is a popular carrier that offers direct flights from Philadelphia to San Francisco International Airport jetting out of PHL.

  • PHL is about 19 kilometres from the centre of Philadelphia. To work out how to get there, use Google Maps. This useful travel app will show you the quickest route and available public transport options.

  • Want an easy start to your trip? Stay near Philadelphia International Airport. Whether you have an early flight from Philadelphia to San Francisco International Airport or just don't want to be rushed, these hotels are perfect:

About San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • From San Francisco International Airport, San Francisco is approximately 21 kilometres away. It takes around 20 minutes to get to the centre driving.

  • Travelling on public transport takes about 47 minutes.

How to find the cheapest flights from Philadelphia to San Francisco International Airport (SFO)

  • For a one-way ticket from Philadelphia to San Francisco International Airport, 78 € is the cheapest price. You can also book a return flight from just 157 €. These are the lowest fares right now but may change depending on availability.

  • Book 8 months before you want to travel. After crunching the numbers on our calendar, this is how far you should book ahead to secure cheap tickets from Philadelphia to SFO.

  • May is the cheapest month for tickets from Philadelphia to San Francisco International Airport. If you're looking to travel at a different time of year, use the 'Whole month' search feature to see the lowest prices for every month.

  • Snapping up a cheap ticket from Philadelphia to SFO is easy with Price Alerts. Simply set up one of these automatic alerts and we'll let you know as soon as the price has dropped.

  • Use the filters to tailor your flights from Philadelphia to San Francisco International Airport. Enter your ideal arrival and departure times, airlines and number of stops. You can also sort your results by 'Cheapest' to get the best deals.

The best time to fly from Philadelphia to San Francisco International Airport (SFO)

  • August is the most popular month to catch a flight from Philadelphia to San Francisco International Airport while February is the quietest. To work out the best time to visit San Francisco, consider whether you like a lively atmosphere or a quieter vibe.

  • Think about the kind of weather that'll suit your plans for San Francisco. September is known as the warmest month. Book your flights from Philadelphia to SFO sometime then and you can expect temperatures of between 12ºC and 22ºC.

  • Search for cheap flights from Philadelphia to San Francisco International Airport in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between 6ºC and 16ºC on average.

More about San Francisco

  • When it comes to searching for somewhere to lay your head, you'll find the best places to stay in San Francisco right here. Browse these hotels as soon as you've locked in your flight from Philadelphia to San Francisco International Airport:

  • One of the best ways to get to know San Francisco is to explore its most popular sights. Essential stops include Golden Gate Bridge, Alcatraz Island and Lombard Street.

Complete your San Francisco trip with a car rental

  • Close all those tabs and leave the hard work to us. We can also help you find deals on car rentals in San Francisco once you've booked your hotel and cheap flight from Philadelphia to San Francisco International Airport. Instantly compare prices all in one place and drive off with a bargain that's hard to match.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.