Webjet australia https://www.theaustralian.com.au/business/news/webjet-to-accept-bitcoin-for-bookings/news-story/04e915affde64e5aa1b8cd243bdf4235

https://www.travelbybit.com/

https://nulltx.com/top-4-places-book-flight-bitcoin/

Another list http://travelwith2ofus.com/11-travel-sites-that-accept-bitcoin-for-flight-and-hotel-bookings.php

Brisbane Airport, Australia gonna be one of the first crypto friendly airport in the world  https://www.telegraph.co.uk/travel/news/brisbane-becomes-worlds-first-airport-to-accept-bitcoin/