To estimate daily typical prices, KAYAK will take all charges for every day in advance of departure throughout the last yr for flights from London Heathrow Airport to Austin, removes the top 0.one% to account for outliers, then requires the normal of every one of the values for each month. https://businessclassflightstocaribbean.blogspot.com/2024/05/how-to-find-best-deals-on-cheap-flight.html