Southwest Airlines has announced an airfare sale from $39 each way. These sales are always a reminder to check your current reservations as you can sometimes re-book the same flights for less money/fewer points if they have decreased in price. I checked my reservations this morning and made a re-booking that saved me almost 9k RapidRewards points:
Remember that you can change bookings made with either cash or Rapid Rewards points. Cash bookings receive a travel voucher credit that expires 1 year from the date you made the initial booking and the travel voucher is non-transferable (it can only be used to book for the passenger named in the original reservation). Points are immediately refunded to your account with no expiration or restrictions.
Full terms and information about the sale can be found here.