Ever dreamed of relaxing in a first-class seat on a United Airlines flight? Even if you've paid for the upgrade, you might still face an unexpected challenge—fellow passengers trying to persuade you to give up your seat.

One user commented, “if a bag can’t fit into the regular overhead bin, the GAs [gate agents] should measure it and force the passenger to pay to check it.”

A Reddit user is sparking an online debate after posting a photo of a suitcase, instead of a passenger, strapped into a first-class airline seat on a California flight.

A Reddit user claimed her husband saw a carry-on bag strapped into an aisle seat of a first-class compartment on a flight.