In general when looking for the cheapest flight to United Kingdom, try to book your flight during the month of October for the best deal.
In general, most flyers find the cheapest time to book a flight to United Kingdom is about 60 days prior.
From most locations, the cheapest flights to United Kingdom are found on a Tuesday. Booking a Friday departure is usually the most expensive.
Generally, when visiting United Kingdom, evening flights represent the best value. noon flights are likely to have higher prices.