Due to regulatory delays, Delta Air Lines is temporarily changing plans for several A321neo jets — with a massive expansion of first-class seating.

Flying first class once meant showers of Champagne and cold caviar. Now, it's a Shake Shack burger, hold the fries. Iain Bagwell/Delta Digging into fast food faves is now an unexpected first-class ...

I treated myself to a first-class flight with United Airlines for my birthday. I thought United's in-flight service was exceptional, and the meals were worth the upgrade. I'm already looking forward ...