To estimate day-to-day typical rates, KAYAK requires all selling prices for daily prior to departure over the last 12 months for flights from London Heathrow Airport to Austin, gets rid of the highest 0.one% to account for outliers, then takes the standard of the many values for each month. KAYAK https://businessclassflightdealstosydney.water.blog/2024/07/23/some-insights-about-popular-holiday-packages/