Cheap flights from Philadelphia International to San Francisco International

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Compare Philadelphia International 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 International to San Francisco International

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

Find the cheapest month to fly from Philadelphia International 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 International to San Francisco International flights are currently cheapest in March.

Direct flights from Philadelphia International to San Francisco International

Philadelphia International to San Francisco International: Alternative routes

Compare routes from Philadelphia International 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 found$130
Cheapest month to flyMarch
Average flight time6 hrs, 20 mins
Most popular airlineAmerican Airlines
Average flights per week123

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

The best price we found for a round-trip flight from Philadelphia International to San Francisco International is $130. 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 20 minutes is the average flight time from Philadelphia International to San Francisco International.
American Airlines, United and Qatar Airways fly direct from Philadelphia International to San Francisco International.
There are 123 flights per week flying from Philadelphia International to San Francisco International, as of February 2025.
The cheapest month to fly from Philadelphia International to San Francisco International is usually February 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Philadelphia International Airport to San Francisco International Airport on Wednesday, March 19, 2025.
Yes – the average flight time is 6 hours and 20 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.
Currently, Frontier Airlines and United offer the cheapest flight tickets to San Francisco International.

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

  • A direct flight from Philadelphia International Airport to San Francisco International Airport takes on average 6 hours 10 minutes. The timezone in San Francisco is UTC-7, which makes it 3 hours behind Philadelphia.

  • Every week, there are 43 flights from Philadelphia International Airport to San Francisco International Airport. If you'd like to jet off as soon as possible, opt for the 01:38 American Airlines flight. If you're keen to make the most of your day before flying, the latest flight from PHL to SFO is 23:59 with United Airlines.

  • Peak months like August or vacation periods such as spring break and Thanksgiving will mean longer lines at check-in and security. Play it safe and get to the terminal even earlier. Arriving two hours before a domestic flight and up four hours ahead of international flights is a wise move.

  • United Airlines has direct flights from Philadelphia International Airport to San Francisco International Airport. Book with this popular carrier, then get ready to check out the sights in San Francisco — and maybe even more of United States if your schedule allows.

  • If you'd like to break up your flight from Philadelphia International Airport to San Francisco International Airport, consider adding a stopover. Just uncheck 'Direct flights only' and find a city that catches your eye. The top stopovers on the PHL - SFO route are:

    • Denver International Airport

    • Lambert-St. Louis International Airport

    • Pittsburgh International Airport

  • You don't need your passport or a visa to travel within United States. You will need a valid form of identification though, like an ID card or driver's license. Make sure they're on your packing list once you've found cheap ticket from PHL to SFO.

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

  • The lowest price we've found for a one-way ticket from Philadelphia International Airport to San Francisco International Airport is $65. For a return flight on this route, the best price is $130. Depending on the availability and when you book, these fares could change.

  • Book 9 months before you travel. After crunching the numbers on our calendar, this is how far you should book ahead to find cheap tickets from PHL to SFO.

  • May is the cheapest month for tickets from Philadelphia International Airport to San Francisco International Airport. If you need to fly during a different time of year, the 'Whole month' tool will give you the lowest prices for each month.

  • Finding a cheap ticket from PHL to SFO is easy with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when there's a better deal.

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

Handy information about Philadelphia International Airport (PHL)

Arriving at San Francisco International Airport (SFO)

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

  • San Francisco International Airport is approximately 21 kilometers from the center of San Francisco. With your own car rental or in a cab, the drive is around 20 minutes.

  • It takes around 47 minutes to get there using public transport.

When to fly to San Francisco International Airport (SFO)

  • August is the busiest month for flights from Philadelphia International Airport to San Francisco International Airport. To skip the crowds, head to San Francisco in February.

  • When reserving your flight from Philadelphia International Airport to San Francisco International Airport, consider the type of weather you enjoy. September is the warmest month in San Francisco, with the temperature ranging from 12ºC to 22ºC.

  • January has average temperatures of between 6ºC and 16ºC. Look for cheap tickets from PHL to SFO sometime around then if you want to travel in cooler conditions.

More about San Francisco

  • After booking your flights from PHL to SFO, you'll want to find a hotel in San Francisco. Make one of these options your base for exploring this exciting city:

  • Every great adventure has to include some sightseeing. Golden Gate Bridge, Alcatraz Island and Lombard Street are among the things you can't miss in San Francisco.

Complete your San Francisco trip with hotels and a car rental

  • You've booked a cheap ticket to San Francisco International Airport — now it's time to find a great place to stay, and perhaps even your own set of wheels. We've compared prices across hundreds of companies to bring you the best hotels and car rental deals in San Francisco.

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