CheapAir

CheapAir lets you book flight tickets from biggest aviation companies in the world, scouring the web for the cheapest and most convenient flight options. On top of it, you are always sure that you pay the best price as CheapAir compensates the price difference if the flight price is lower after buying. This particular company began to accept Bitcoin payments in 2013, making them the real pioneers of adoption cryptocurrency payments. And just recently, they expanded their payment options even more.