Premium economy often costs around 50% more than economy, although this varies widely and varies by sub-class.
My experiences with US airlines, in general, have been mixed. I can’t bear those internal flights in the super tiny planes ...
Don't get tricked next time you pay for an airline upgrade, because you might not be getting what you expect. Here's what I mean. I'm going to show you a few pictures and I want you to pick the one ...
Mainline carriers typically provide 38 inches in seat pitch on transatlantic routes, although the seat recline can vary significantly.