This is an interesting exercise in that it is a mature domestic leisure market that already sees relatively steady competition unlike the untested mad scramble for routes to Cuba (a least
they pivot quickly given that the economics of flying Cuba routes aren't really going to change anytime soon).
WN's international pullback from its foray to MEX (apparently the margins and the online-only sales channel couldn't support WN on those saturated routes even with the two free bag allowances) was a bit of a surprise but as WN management admits, they do well in leisure destinations so I'd say at least very strong initial pressure on ticket prices for the near future is almost certain.