Starting Sept. 1, 2015, Lufthansa Airlines will begin charging customer 16 Euro (about $18) for purchasing airline tickets from any other website other then their own. That means anytime someone buys a ticket through websites such as Orbitz or Travelocity or even through a travel agent, they will have to pay this extra fee.
Though the concept is unpopular they plan to move forward any way. Other airlines have made moves to ensure customers use their websites to book tickets as well. Delta has been steadily removing their listings from travel websites including CheapOair.com, Bookit.com and OneTravel.com. It had removed its listings from 21 ticket selling sites now.
It shouldn't be a surprise if other airlines follow in removing their listings from these ticket selling sites. Airlines want customers to purchase tickets through their websites which gives them more profit and greater control.