In general when looking for the cheapest flight to San Francisco, try to book your flight during the month of March for the best deal.
On average, from most locations, when planning your trip to San Francisco, try to book your flight in the region of 60 days in advance for the cheapest prices.
From most locations, the cheapest day to fly to San Francisco is Thursday. Most users found that departing on a Sunday was most expensive.
Generally, when visiting San Francisco, noon flights represent the best value. morning flights are likely to have higher prices.
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