$39 Find Cheap Southwest Flights from San Francisco to San Diego

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

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

  Generally, when trying to get a below average price for your ticket, try to book around 21 days before departure. For the cheapest possible price, our data suggests booking 33 days before departure.

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

  With an average price of $184 return, Southwest 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 $100 on average.

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

  In the last 3 days, the lowest price for a flight with Southwest from San Francisco to San Diego was $75 for a return flight and $38 for a one-way flight.

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

  Yes, Southwest does offer direct flights for the route, with around 36 flights per week.

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

  On average, the cheapest day of the week to fly from San Francisco to San Diego with Southwest is Monday, when prices are around $37. The most expensive day is generally Wednesday, where the average price is around $48.

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

  The cheapest month for Southwest flights to San Diego from San Francisco is generally March, where plane tickets cost $88 on average. If possible, try to avoid the most expensive months of February and December, where tickets cost $128 and $159 respectively.