Daytripper has got it right here, if SWA trys to compete in a market that is owned by the legacies they are taking a huge gamble and stepping totally outside of their current business model. They would not be competitive in cost initially because of the huge expense it would take to set up an international infrastructure, not to mention that their labor cost are the highest in the industry and that they are gradualy losing the "fuel hedge" advantage they have enjoyed recently. Throw in aircrew additional training, FAA training approval, additonal sim time, etc to the cost list that daytripper started.