297 - 655 GBP
From most locations, the cheapest flights to San Francisco can be found during the month of November; however great deals can be found at other times.
On average, from most locations, when planning your trip to San Francisco, try to book your flight in the region of 56 days in advance for the cheapest prices.
On average, the cheapest flights to San Francisco are found when departing on a Wednesday. Try to avoid departing on a Sunday, as this is usually the most expensive day.
In general, when looking for the cheapest flight to San Francisco, our data indicates that afternoon flights are the most cost-effective. midday flights tend to be the most expensive.