What is the best day to buy airline tickets? Buying tickets on Tuesday afternoons usually results in the best bargains according to a number of frequent passengers. Shoppers in the middle of the week can benefit from early weekly price adjustments made by airlines. Apart from picking the ideal day you can also save more money by scheduling flights during off peak periods such as midweek departures. However bear in mind that demand and seasonality are two examples of the elements that affect prices. Knowing when to purchase plane tickets can help you save a lot of money on your next vacation.