So, ditch those scruffy jeans and the t-shirt with last night’s dinner stains down the front.
Instead, polish those shoes and wear your Sunday best.
Delta Airlines (DAL) has made a push for this by using discounted fares and paid upgrades, upping the share of paying first-class fliers to 57% from 11% a few years earlier.
Virgin Airlines is also testing an auction process that would allow customers to upgrade to better available seats using an app called Seat Boost.
View checked baggage allowances for [email protected] Bids for upgrade into Premium Economy are only available on selected flights where a Premium Economy cabin is available.