Not a fan of loafers with suits, but a few above posted looks worked for me.
As far as the airport, I used to wear chelseas if I was traveling in business attire for this reason. Without a shoe horn, generally took me at least a minute to put on my shoes otherwise. Or maybe I put my shoes on slowly.
Everyone else just stepped on their heels enough, taking their shoes on and off, that it didn't seem a problem for them. Nobody even bothered with their laces.