Originally Posted by
sigma1104
After checking your bags, head right then upstairs, follow the signs for D-gates, show your Southwest boarding pass and let the TSA know you are aware you're at the D checkpoint and your flight departs elsewhere. Right after security there is a train that will take you to the airside section of D.
Got it thank you. Can I take the train back to the WN gates without having to exit and reclear security?