Cheap flights from San Francisco to Philadelphia from $135

The cheapest month to fly to Philadelphia from San Francisco is in September. Flight prices, which tend to average around $389, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Philadelphia, with average flight prices from San Francisco averaging around $389.

The cheapest day to depart from San Francisco to Philadelphia is on a Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $435. On the other hand, Monday is the most expensive day to depart from San Francisco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $610.

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from San Francisco to Philadelphia in the evening for as low as $458. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the afternoon when prices are around $618.

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

You are more likely to see cheaper flights to Philadelphia from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $438 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from San Francisco for as low as $373 on momondo.

No. A direct flight is the cheapest option for a flight between San Francisco to Philadelphia.

As of April 2026, prices for San Francisco to Philadelphia flights are approximately 7% more expensive when compared to flights at the same time last year.

Southwest, Alaska Airlines, and United Airlines are the most popular carriers operating from San Francisco to Philadelphia

American Airlines, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Philadelphia from San Francisco according to our data. American Airlines is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 10 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

Detroit (DTW) was the most common stop: 25% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $241.

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 6h 59m.

Detroit (DTW) has the shortest average layover time for this route: 0h 46m.

12 flights are operational daily from San Francisco to Philadelphia as of April 2026. The most popular departure time for this route is 5:00AM, with 36% of flights per day taking off at noon.

89 flights are operational weekly from San Francisco to Philadelphia as of April 2026. The most popular departure day for this route is Thu, with 20% of flights per week taking off on this day.