Don't know back in your days, but aren't there like a few websites one can use to book tickets using Bitcoin these days? I've seen 

lightning

Lightning to bank in 1 minute - Why and what does it mean to the community?

prashanthc

Don't know back in your days, but aren't there like a few websites one can use to book tickets using Bitcoin these days? I've seen @JoeNakamoto use them.

Edit:
- https://www.cheapair.com/travel/buy-flights-with-bitcoin-btc
- https://www.travala.com/
- https://www.alternativeairlines.com/buy-flights-with-bitcoin