Guess The Airline – March 2013 answer

Every month, an airline printed advertisement, minus airline name and logo, is displayed for your guessing pleasure on Guess The Airline. The following is the answer to a previous game.

Once again, this was an advertisement from a 1980 issue of Fortune for an airline which no longer exists. Are you ready? Scroll down!

Scandinavian Airlines advertisement titled 'Maps are liars', featuring different airline routes from Europe to the Southeast Asia. — Scandinavian Airlines advertisement titled ‘Maps are liars’, featuring different airline routes from Europe to the Southeast Asia.

How to guess it?

The airline in question either flew out of Copenhagen or stopped there. But it could definitely not be Thai: why would Thai be its own General Agent, and why would that clue be left unhidden in this Guess The Airline?