Southwest isn't ruling it out for the future is what the article states.
The ATA hook-up is a grand experiment in many ways. At first it gave them access to previously heretofore taboo airports, like DCA
. Then, it gave them Hawai'i, what's next?
What I think they're doing is using ATA to find out how it might work in the future, that is, how their low cost/low fare model would work crossing the border in terms of the taxes that need to be collected and immigrations and customs issues.
I say its not to far away.
How long many more market in the continental US can WN
serve with high frequency 737s? Beyond the borders answers those questions. I think flying internationally would be a lot easier than introducing a new type to the fleet...
They are getting their feet wet with ATA, while assuming none of the risk.