Cheap flights from Philadelphia to San Francisco from $179

If you aren’t able to travel to San Francisco during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $389.

The cheapest day to depart from Philadelphia to San Francisco is on a Wednesday when prices can be found for as low as $449. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $712.

Our data shows that the cheapest Philadelphia to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $387. Flights in the morning are often more expensive with an average ticket price of $515.

Fly from Philadelphia to San Francisco for the best Philadelphia - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $417 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Philadelphia for as low as $355 on momondo.

There are 4 cabin classes available to choose from on Philadelphia to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 20% on your flight if you consider stops on a Philadelphia to San Francisco flight.

As of July 2026, prices for Philadelphia to San Francisco flights are approximately 9% cheaper when compared to flights at the same time last year.

Southwest and JetBlue are the most popular carriers operating from Philadelphia to San Francisco

United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to San Francisco from Philadelphia according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 9 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Atlanta (ATL) was the most common stop: 57% of momondo users choosing 1-stop flights on this route connected there.

Flights via Boston (BOS) offer the lowest average round-trip price of $246.

Flights connecting via Los Angeles (LAX) have the shortest average one-way travel time: 9h 04m.

Los Angeles (LAX) has the shortest average layover time for this route: 1h 49m.

As of July 2026, 17 flights take off from Philadelphia and land in San Francisco each day. The most common flight departure time for this route is 6:00AM, with 40% of daily flights taking off at noon.

The number of flights available between Philadelphia and San Francisco is 120 per week as of July 2026. The most frequent departure day is Sat, with 17% of weekly flights leaving on this day.