Prince William The British Are Coming! A Lot of Them ...

12/8/2014 8:31 AM PST

Prince William
arrived at Reagan National Airport Monday morning as part of his three-day jaunt in the States ... and he rolled with a HUGE entourage of Brits.

Our photog tried to ask William a question -- and he did flash a smile and wave -- but getting any closer would probably have been met with resistance from the gaggle of suited security guards by his royal side. 

One if by land, two if by sea ... three if by private jet?