To calculate every day average price ranges, KAYAK can take all rates for every single day prior to departure during the last yr for flights from London Heathrow Airport to Austin, eliminates the top 0.1% to account for outliers, and then can take the average of all of the values https://businessflightstosydneyfromlondon.business.blog/2024/09/08/how-does-the-travel-agents-milton-keynes-be-your-best-choice/