Apparently an ad published in the French magazine "Le Point" 19th of March 1979…

Is it a real ad or a hoax? 

VIA PIA
New York via Pakistan International. One of the companies offering scheduled flights to New York. Departure from Orly Sud, offering best flights to the cities in provinces. A new proof of PIA’s efficacy. PIA is an international company expanding business successfully: 3 000 000 passengers this year, a departure every 6 minutes. Success thoroughly built on customers’ satisfaction. For having an excellent flight to New York or 60 other metropolises in the world travel via PIA.

Sources : Presse-Citron, 11Sept