For Business Class flights, the cheapest month to fly this route is October. The most expensive months are January and November.
In terms of precipitation, rainfall in USA ranges from 71.0 - 114.0 mm per month. July is typically the wettest month, when rainfall can reach 114.0 mm. February is typically the driest time to visit USA when rainfall is around 71.0 mm.
If weather is an important factor for your trip to USA, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).
Booking a Business Class flight 76 days in advance of your planned departure date is, on average, the best time to get cheap flights to USA. The general trend is that the closer you book to the departure date, the more expensive your flight will be.