Moderator note: Please see post #140 for the updated list of airports allowing airside smoking.
Also see this spreadsheet prepared by member twospirits listing Airport Smoking Areas. Ocn Vw 1K, Moderator.


According to this link by travelpost.com

Domestic:
Albuquerque, New Mexico
Atlanta
Cincinnati
Denver
Detroit
Greensboro
Gulfport/Biloxi
HNL/OGG (Hawaii)
LA (nowhere I know of though!)
Louisville
Milwaukee
Raleigh Durham
Salt Lake City
Tampa
Washington Dulles

Int'l:
London
Paris
Munich
Frankfurt
Rome
Barcelona
Copenhagen