Singapore Airlines, ASIA - it is launching reward/loyalty program for its customers base don blockchain technology. Customers can accrue miles/points that can be redeemed at retail stores. Singapore Airlines had a successful trail for the program with the help of Microsoft.
Surf Air, USA - USA airlines plan to accept crypto currencies for tocket purchase.
S7 Air, Russia - Working on blockchain technology to issue flight tickets
Brisbane Airport, Australia - airport authority working on terminals that accepts crypto currencies for the payment.
We are seeing the air of blockchain technology in the sky across the world
Source: