Let's see, including transfers, I seem to have 46...
Seattle (only time I've been to Washington)
San Francisco
Los Angeles
Las Vegas
Phoenix
Denver
Albuquerque
Houston
Minneapolis-St. Paul (a past "home airport", and forever my favorite)
St. Louis
Detroit (a past "home airport")
Lansing (a past "home airport")
Indianapolis
Fort Wayne
Chicago-O'Hare
Chicago-Midway
Milwaukee
Memphis (only time I've been to Tennessee)
Cincinnati
Cleveland
Columbus
Pensacola
Orlando
Fort Myers
Tampa
Miami
Atlanta
Washington-Dulles
Washington-Reagan (a current "home airport")
Baltimore-Washington (a current "home airport")
Rochester (NY)
New York-JFK
New York-LaGuardia
Newark (new as of 11 days ago)
Providence
Boston
Montréal-Trudeau
London-Heathrow
Paris-Charles de Gaulle
Amsterdam
Glasgow
EuroAirport (Basel)
Stockholm-Arlanda (new as of 10 days ago)
Tallinn (new as of 6 days ago)
Copenhagen (new as of 6 days ago)
Frankfurt (new as of yesterday)
Would also be curious to know what people's favorite airport is. Minneapolis/St. Paul is actually probably the best one I've been to, at least of the American ones. Gets high marks for the layout, and number of dining/entertainment options for an airport that size.
In the United States, the best airport is easily Detroit, particularly if you're flying Delta or one of their SkyTeam partners. That terminal is insane.
HAHAHAHAHAHAHAHAHAHA no
it's two straight lines
and i always had to go from one end to the other
i hated everything