The best time to book a flight to San Francisco with Alaska Airlines is 64 days before departure. On average, fares are higher if you book 1 day before departure.
For Economy Class flights the cheapest month to fly the route is June. The most expensive months are February and November.
In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.
If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).
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