<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by magexpect:
London has three: Heathrow, Gatwick, London City, one cannot count Stansted although they name it London Airport too.
Paris has three: Charles de Gaulle, Orly, Le Bourget</font>
If you are not counting Stansted you can't count Gatwick either. Both are well outside London's boundaries (Gatwick in West Sussex, Stansted in Essex). Only LHR and LCY are inside London. But so many cities have airports outside the political city boundary.
Paris Le Bourget, IIRC, has no commercial air services any longer.