You can’t use an airship in anything much stronger than a stiff breeze - and major air currents and the like are a problem on any trip of significant length. There is a reason the zeppelins fell out of favor, and it was because their safe operational envelope was pretty small - once you looked at real long term safety record.

The US Navy ran many of them for awhile and they stopped because they crashed so often.

Theoretically they are safe. In reality, they aren’t outside of very controlled circumstances