$43 Find Cheap Frontier Flights from San Francisco to San Diego

When to Book Flights with Frontier from San Francisco to San Diego

• How far in advance should I book tickets for a flight with Frontier from San Francisco to San Diego?

  Generally, when trying to get a below average price for your ticket, try to book around 7 days before departure. For the cheapest possible price, our data suggests booking 51 days before departure.

• Is Frontier the cheapest airline to fly with from San Francisco to San Diego?

  With an average price of $110 return, Frontier is not the cheapest airline to fly from San Francisco to San Diego with. Instead, for the lowest price, our data suggests flying with Spirit Airlines, where a return flight costs $102 on average.

• What is the cheapest Frontier flight from San Francisco to San Diego?

  In the last 3 days, the lowest price for a flight with Frontier from San Francisco to San Diego was $77 for a return flight and $41 for a one-way flight.

• Does Frontier fly direct to San Diego from San Francisco?

  No, Frontier does not fly the route directly.

• What’s the cheapest day of the week to fly from San Francisco to San Diego with Frontier?

  On average, the cheapest day of the week to fly from San Francisco to San Diego with Frontier is Monday, when prices are around $17. The most expensive day is generally Thursday, where the average price is around $29.

• What’s the cheapest month to fly from San Francisco to San Diego with Frontier?

  The cheapest month for Frontier flights to San Diego from San Francisco is generally March, where plane tickets cost $29 on average. If possible, try to avoid the most expensive months of December and November, where tickets cost $77 and $92 respectively.