To estimate regular monthly typical costs, KAYAK will take all costs for monthly over the past calendar year for round-vacation flights from London to Atlanta, gets rid of the best 0.1% to account for outliers, after which you can can take the median of all values for monthly. I tried https://orlandopackageholidays.blogspot.com/2024/07/book-your-business-flight-to-sri-lanka.html