This looks cool - https://www.grottedelasalamandre.com/en/balloon/
I went on an aerophile and they were fun https://www.aerophile.com/en/
If you are chasing a transatlantic mission then you've got a wait and it'll cost far more than a first class airplane ticket.
I think the longest atm for passengers is 2 hours €1000 - https://zeppelinflug.de/en/