The guys over at Flyer Talk have uncovered a $126 round trip fare from Nouakchott, Mauritania, to New York. Sorry, it doesn’t work in the other direction. It looks like a mistake based on the wrong currency being entered (or something), but regardless, there it is. It is (or, more likely, was) available at Opodo. I have no idea what you’ll do with this info, but who am I to decide whether you guys want to fly from Mauritania to New York.