Some people will always argue that Bitcoin is been used only as an asset. But day by day there has been an adoption of Bitcoin as a currency. For airlines in the United Arab Emirate to have the option of using Bitcoin and other coins means that customers have demanded it.

Airlines like Emirates, Air Arabia, Travala and Alternative Airlines, now support cryptocurrency payments for bookings. This is an indication that Bitcoin adoption and use are growing. So the perception that Bitcoin is used only as an asset is not true.

https://cointelegraph.com/news/how-to-book-a-flight-with-crypto-in-the-uae-step-by-step-guide