Does anyone have a suggestion on some comfortable, affordable black airport shoes? Preferably slip on, with no laces. I figure I'll be on my feet walking though airports soon enough, I'd like my feet to not hurt at the end of the day. for instance, I have 3 pairs of Sperry Topsiders that I love, but I can't stay on my feet for too long with them on otherwise my feet start to ache. (They obviously don't have much cushion, so I'm not looking for anything similar in terms of thin soles)

Suggestions are appreciated!