Through May 15, 2013, Southwest Rapid Rewards members can earn double points on every flight you take on Southwest Airlines. You’ll receive 24 points (instead of the standard 12 points) per dollar spent on Business Select fares, 20 points (instead of 10 points) per dollar spent on Anytime fares and 12 points (instead of six points) per dollar spent on Wanna Get Away? fares.
Also through May 15, 2013, you can earn double Tier Qualifying Points on every flight you take into or out of Milwaukee.
You must register by May 15, 2013 to receive the bonus points (only one registration is required that covers both promotions). These offers are valid on new reservations only. Visit http://www.insideflyer.com/link/?8310 to register.
Bottom line: Although the offers are for new reservations only, keep in mind that Southwest Airlines does not charge to change flights. You will be at the mercy of the current cost of the flight, but it might be worth it to cancel and rebook your travel to catch the double points promotion.