Ever notice that when you check a flight price online but do not book the flight then, a return visit to the website can show a higher fare for the same flight? It may be the work of customer-tracking cookies that alert the website that this is a return visit, meaning that you may be eager to buy even at a higher ticket price. To snag the original price, use a different browser for the second visit to the website.
Source: AARP newspaper, November 2014
