Frontier flights from Philadelphia to San Francisco (PHL - SFO)

• Can I get a flight from Philadelphia to San Francisco on Frontier for under $500?

  Cheapflights users have found 38 Frontier flights for under $500 on the PHL-SFO route. Prices on flights to San Francisco from Philadelphia can vary based on many factors including dates. To look at price based on your preferred dates, click here.

• How do most travelers feel about Frontier?

  9,141 Cheapflights users have left reviews for Frontier and have rated the airline 8.0/10. If you are looking to travel from Philadelphia to San Francisco on Frontier, input your dates in the form above for our best prices!

Currently, the most affordable month to book a Frontier flight from Philadelphia to San Francisco in September, with an average price of $268. Conversely, traveling with Frontier from Philadelphia to San Francisco in June will be the most expensive, with an average cost of $383. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).