Originally Posted by
DCdeacon
I see why this may be exciting from a passenger perspective (ability to use upgrade certs where you previously couldn't, etc), but can someone please explain the advantage of this from the perspective of both airlines? Seems to be essentially an even swap, so what's their motivation for doing this?
I think the airline motivation for DL is it offers its own metal LAX to the EU
And VS it gives them a slot to the busiest airport in the world. And it allows passengers with a DL or VS preference the option to both cities now.