Promo Codes of Southwest can help customers save $24. You can view your existing Southwest Promo Codes by logging into your account, viewing your profile and clicking [My Card]. If the product you want to buy complies with the Promo Codes rules of use, then you can add the product to your cart. Next, it will jump to the payment page, select Coupon Codes of your Southwest on the payment page, and complete the payment. Also, welcome to this promotion from Southwest on October: Earn 1,200 Rapid Rewards Points, Double The Standard 600, And Decrease 10% On Base Rates When Renting A Mid-size Or Larger Vehicle With Dollar Rent A Car.