Most travellers find the cheapest return flights to San Francisco when choosing a flight departing in February.
From most locations, booking your flights to San Francisco around 34 days prior to your departure date finds the best deals.
On average, the cheapest flights to San Francisco are found when departing on a Tuesday. Try to avoid departing on a Sunday, as this is usually the most expensive day.
Generally, when visiting San Francisco, evening flights represent the best value. afternoon flights are likely to have higher prices.