First-class fliers have a code. It’s subtle and usually comes with a glass of champagne. If you want fit in before you fall flat in a sea of stares, learn the unspoken rules—lest you mistake the amuse ...

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 ...

I wasn't sure if I should upgrade to first class on my first overnight flight with my infant. I ended up trying it, and it did not go as I'd hoped. I booked coach seats on our return flight. We slept ...