SW Air now open for booking through Jan 5, 2020

[DaveOKC]

Now I can book my Dec cruise air!

[fatcat04]

Thanks for the heads up. I wasn't anticipating them to open up the calendar until mid June. 

[TAD2005]

Most major airlines adhere to the standard policy of around 330 days.   This is based on your return flight home, not your departure.  Southwest and the other low cost carriers do not have a set date, it varies based on seat inventory.  Right now, Southwest is 219 days out.