Airships couldn't fly great-circle routes of shortest distance, so the actual distance would be much longer. They did pressure-flying, skirting around weather formations like a helicopter flying through mountains. Sometimes they could get a slingshot by riding a wind as it flowed from a high.

Maybe for airships/blimps the approach would have to be different than for airplanes, meaning more intermediate stops? (maybe their "landing/takeoff"-cycle is more efficient than the ones of airplanes?) Kind of bus/tram vs. trains?

Or maybe just complementary? E.g. long routes handled by airplanes, "medium" routes handled by airships/blimps, and the rest handled by trains/bus/whatever?

I suspect we could do much faster landing/takeoff in airships nowadays than before, with dynamic positioning and azimuth thrusters or similar (rather than relying entirely on tether lines and/or mooring towers). It might be possible to have a faster cycle than airplanes due to VTOL abilities and more on-board infrastructure allowing for landings at smaller airfields than most commercial flights are able to use - though I imagine most local airfields would require some degree of retrofitting before they could support airship landings.

While I doubt they will ever be a primary transportation medium, I wonder if there would be enough demand for a cruise-ship-style airship to be commercially viable; I for one would absolutely love to spend a month on a luxury cruise around the world, landing every other day without the limitations of only seaside locations.