The speculation on this forum is interesting and I think we will see some changes soon…

I could see SWA taking a hard look at JetBlue in the near future. They honestly could compliment each other well with the network and aircraft. Plus, AS is busy merging with Hawaiian and I doubt the DOJ will allow 3 mergers at once.

Very long term, I can see Delta, American, United, and Southwest eventually merging with the rest of the LCCs and just leaving primarily 4 major airlines.

I believe United will merge/aquire with Spirit before they go with JetBlue. Kirby has already been talking about Spirit for a while.