Currently, March is the cheapest month in which you can book a Business Class flight from United Kingdom to Chicago (average of £913). Flying from United Kingdom to Chicago in August is currently the most expensive (average of £1,928). There are several factors that can impact the price of a flight, so comparing airlines, departure airports, and flight times can provide users with more options.
Flying Business Class to Chicago? Users reported booking with Finnair the most.
In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.
If weather is an important factor for your trip to Chicago, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).