Kate Middleton Flies Commercial — Plus See 9 More Ways She and Prince William are Breaking the Royal Rules!

Kate Middleton is just like us — and flies commercial!

The 34-year-old Duchess of Cambridge surprised unsuspecting plane passengers on Tuesday, Oct. 11 when she boarded a British Airways flight to London following a day-trip to the Netherlands.

Je zei het al @nausicaamarbe : net een stewardess 😉 pic.twitter.com/yEMlYHKoAf

— Marc van der Linden (@MarcvdLinden) October 12, 2016

Twitter photos of Kate on the aircraft show her still donning the pretty, blue Catherine Walker skirt suit she wore earlier on Tuesday during a meet and greet with King Willem-Alexander.

MUST SEE: Ben Affleck Reveals His Son Samuel Played With Prince George and Princess Charlotte in London — Get the Fun Details!

Though Kate and her husband, Prince William, 34, often travel via private jet, the couple has flown commercial in the past. They previously took a British Airways flight from LA to London in 2011.

Click through the gallery below to see more ways Kate and William are breaking the royal rules!