William and Kate fly economy home from Zara Phillips' wedding

Catherine, Duchess of Cambridge, isn't kidding about relating to regular folks: She and Prince William flew a discount commercial airline home from Zara Phillips' royal wedding, leaving her open to the possibilities of fitting a fascinator into an overhead compartment.

Phillips, William's cousin and 13th in line for the throne, married England's rugby captain Mike Tindall on Saturday in Edinburgh, Scotland, drawing the likes of Her Majesty the Queen, Prince Phillip and Prince Harry, to name a few.

Photos: Fabulous royal wedding hats

Yet when the titled bunch went packing, Will and Kate headed straight for the airport alongside other normal types who were booked on Flybe, a discount airline that averages about $80 for a one-way journey.

Passengers were "shocked" to see the famous couple on board, the Daily Mail said. They were traveling with a security staff but unable to upgrade to first class, as the jet service does not offer a VIP section — though "economy plus" comes with snacks and drinks.

Harry took a cue from his brother and sister-in-law, flying round-trip to the weekend wedding on EasyJet, which asked him an extra $20 to check his military-issue weekend bag.

Harry headed directly home to London, while the duke and duchess flew to Manchester (their home in Anglesey is about two hours from the Manchester airport).