My husband and would like to rent a car in Llandudno and return it in Cardiff. Do you know of any rental companies that do this?

I know there is an Avis location in Llandudno Junction (about 5 miles from Llandudno). They may or may not do one-way rentals, but are probably your best option.

Thanks, I will try that.

There is a Europcar location near Conwy, as well.

They have cars in Wales now????

The Europcar website lets you play with different pickup and dropoff points. I think I remember that a couple months ago it would let me combine their Cardiff airport location with Swansea, but not combine Cardiff city center location with Swansea. So you may want to experiment with different Cardiff locations.