Click or tap on the ad to reveal the answer.

How to guess it?
There weren’t many things to indicate you the airline. To the clever one, all you had to do is read the tiny little text, almost impossible to read. You could find out that the mystery airline flew to “eleven [international] destinations in Asia”, among them “Japan, Hong Kong, Thailand, Philippines, Taipei, and of course, our homeland, _____”. By thinking a little bit you find out that it is NOT an airline from Japan, Hong Kong, Thailand, the Philippines or Taiwan, since they’re not the homeland.After eliminating JAL, Cathay Pacific (which flew the L-1011 instead), Thai, Philippine Airlines, and China Airlines, it was all a matter of luck, trying each one of the other major Asian airlines that are flying or have flown the DC-10. That aircraft type was barely recognizable on this ad! But, for the cultivated person, you can find out that the flight attendants are wearing the national Korean costume (thanks to Jakrin for the info!).