The best time to book a flight to San Francisco with Virgin Atlantic is 78 days before departure. On average, fares are higher if you book 55 days before departure.
For Economy class flights, the cheapest month to fly this route is September. The most expensive months are July and August.
The most Virgin Atlantic flights from LON to SFO are scheduled on a Monday (2 on average). You will have fewer Virgin Atlantic flight options on Friday, which is when the least amount of flights are scheduled (1 on average).
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. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).
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