Like fine European hotels or the fanciest boutique properties, the ships of the best luxury cruise lines are designed to appeal to people who seek — and can afford — an elegant style of travel. Champagne flows. You can snack on caviar. Exquisite cuisine is prepared a la minute and accompanied by pours of fine…

Ready or not, “basic” first- and business-class tickets appear to be on the way at Delta Air Lines sooner, rather than later. For many months, the Atlanta-based carrier has dropped breadcrumbs about bringing an adapted version of its “basic economy” concept to its myriad of premium seats. That could conceivably mean booking a $1,500 first-class…