Similar to checked bag size restrictions ... if you pay for your carry-on baggage at the time of booking; it costs a hefty $45 if you add a carry-on bag later – and up to $75 at the gate.

First came millennial toilet paper, then came millennial trash bags. Hefty debuted a limited-edition line of "talking trash bags" on Monday, featuring 20 unique sayings. Though the cheeky phrases ...