08-07-2017
12:36 AM
From https://www.southwest.com/air/flight-schedules/index.html "We are currently accepting air reservations through April 6, 2018. On August 28, 2017 we will open our schedule for sale through June 1, 2018. This date is subject to change! Please check back frequently" Based on that, I would suspect a late September or early October extension that would cover June 2018.
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