Cheap flights from San Francisco to Pennsylvania from $175

The month of September is, on average, the cheapest month to fly to Pennsylvania from San Francisco, with most prices found around $409. If you don’t want to visit Pennsylvania in September, then you should wait until January to fly from San Francisco, when ticket prices are also cheap, with an average price of $418.

The cheapest day to depart on your flight to Pennsylvania is on a Wednesday when prices can be found for as low as $457. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $639. These prices are subject to change though, so be sure to set up a Price Alert for flights to Pennsylvania.

Our most recent data shows that the best time of day to fly to Pennsylvania is in the evening. Flights from San Francisco to Pennsylvania during this time can be as low as $475. In contrast, the most expensive time of day to depart to Pennsylvania is at noon when prices are around $580.

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

You are more likely to see cheaper flights to Pennsylvania from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Pennsylvania for around $454 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pennsylvania from San Francisco for as low as $346 on momondo.

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

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from San Francisco to Pennsylvania

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Pennsylvania from San Francisco according to our data. American Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Pennsylvania. Keep in mind that there are 6 different airlines that fly to Pennsylvania on a routine basis, so you have a few additional options to choose from.

137 flights are operational daily from San Francisco to Pennsylvania as of August 2026. The most popular departure time for this route is 8:00AM, with 52% of flights per day taking off at noon.

The number of flights available between San Francisco and Pennsylvania is 960 per week as of August 2026. The most frequent departure day is Wed, with 22% of weekly flights leaving on this day.