To determine day-to-day average charges, KAYAK normally takes all charges for daily before departure during the last 12 months for flights from London Heathrow Airport to Austin, gets rid of the highest 0.one% to account for outliers, and after that can take the average of all the values for monthly. https://firstclasstohouston.game.blog/2024/07/23/exciting-and-relaxing-holiday-packages/