I think more of Pan Am went to DL
. Had DL
purchased everything from Pan Am that would have been the largest instead some Pacific ops went to UA
, Trans-Atlantic (excluding LHR
) went to DL
and eventually most of the Caribbean went to AA
did not purchase the Caribbean/South American routes due to the instability in the region however five years after that they wished they had.
I would say AA
/TWA is the largest, but I am sure DL
/Western is up there. What about the Canadian airlines? That is a good question. I think at the time of the merger TWA wasn't as big as Western, but AA
was much larger than DL
was in 1987.
It's a big building with patients, but that's not important right now.