For Economy class flights, the cheapest month to fly this route is September. The most expensive months are May and July.
The most Lufthansa flights from LHR to CHI are scheduled on a Monday (3 on average). You will have fewer Lufthansa flight options on Monday, which is when the least amount of flights are scheduled (3 on average).
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).
The best time to book a flight to Chicago with Lufthansa is 81 days before departure. On average, fares are higher if you book on the same day as departure.
Comfort
Boarding
Food
Entertainment
Crew