To calculate each day average rates, KAYAK will take all rates for daily just before departure over the past year for flights from London Heathrow Airport to Austin, gets rid of the top 0.one% to account for outliers, after which you can normally takes the average of many of the https://flightstodetroitfromlondon.blogspot.com/2024/09/start-planning-your-vacation-by-booking.html