Avoiding long travel layovers and international stopovers when travelling long distances by air used to be the goal when it came to booking tickets. But, thanks to some outstanding recent campaigns by airlines like Icelandair (I know that I can't go a day without seeing gorgeous photos of Iceland's blue lagoon popping into my newsfeed), a long layover is not only something not to avoid, but an air travel trend that is now being sought out — it's two vacations in one! And, multiple airlines are getting on board.