Originally Posted by
jrl767
HINT: surprisingly, the reference OAG shows that PA did not actually operate from a much larger hub airport ~20 miles away from YYY
My hunch is that in 1983, only 9 years after CDG opened, Orly would still be the larger airport, with most Air France (and all Air Inter) flights and many others. CDG was constrained, despite all its runway capacity, by having only the single, circular, original terminal for some time, until Terminal 2 with all its wings and capacity was progressively inaugurated. The airlines in CDG were those who had originally been at Le Bourget, plus a gradual and somewhat random transfer from Orly.