Originally Posted by
MikeFromMKE
That I agree with. YX used to have some FF reciprocity with AA (might have just been Eagle) before DL. I'm not even sure it has to be a full alliance membership, just an international carrier. That doesn't necessarily mean a US based one either, but I'm not sure how many international carriers would be willing to step outside their alliance boundaries.
For the Atlantic, maybe Virgin Atlantic? The problem is VA doesn't fly to any of F9's hubs, so connections would most likely have to double connect somewhere. They might be able to convince them to fly into DEN.
I keep wondering if EK (Emirates) will seek an alliance like this. They are lonely since United & Continental merged and ended the EK-CO relationship. They don't have any competing routes, either, and their approach to elite travellers is about the same.
On the Pacific, maybe they could convince Hawaiian to fly to DEN?
Hawaiian is already in cahoots with United/Continental.