I have good experiences with Destinia and Abitsky. In general, I definitely don't
guarantee that any of them are trustworthy though

Up to everyone to do their own research etc.
BTW, someone from the "Payments Race" mentioned "future.travel" (booked ticket with them):
https://www.youtube.com/watch?v=I0qrn82PhOM so there is that.
I haven't see this for a while an overview of all airline accepting bitcoin as payments, but yeah we need to do our own research for precaution.
I guess there could be some information about asia airlines will accept bitcoin in the future as payment for the ticket or it is all possibilities I'm thinking of traveling in Japan.