You have answered this yourself in the question ! London.
Washington Dulles International Washington, DC Source: http://www.world-airport-codes.com
no, there is not. a shuttle ride from the airport to park city is the cheapest way to go. check the yellow pages for transportation companies.
It depends on the city you are talking about. Atlanta has one and Boston and Portland. Chicago and LAX. And way more.
Dum Dum Airport has been renamed Netaji Subhash Chandra Bose Airport in Kolkata (previously known as Calcutta), India. IATA Code is CCU.