AirTran Airways is offering double A+ Rewards credits for all travel to and from eight major airports. Members will earn the bonus for flights to and from Chicago’s Midway Airport (MDW), Westchester County Airport (HPN), Richmond International Airport (RIC), Greater Rochester International Airport (ROC), Newport News/Williamsburg International Airport (PHF), Bloomington/Central Illinois Regional Airport (BMI), Moline/Quad Cities International Airport (MLI), and Akron-Canton Airport (CAK), for travel booked and completed by June 15.