It is my son (25) and single who is moving. He currently lives in Nashville, and lives about 3-4 miles from the airport where he works.
The important things for him, probably in this order.
1. Commute time and ease.
2. Safe area
3 Price
Ammenites not really important at the apartment complex. But Ammenities like close grocery store, Walgreens etc..
Pretty much anything 3-4 miles from DFW fits the parameters. Overgeneralizing, straight east to southwest will be less expensive, but quite a bit of variation in age and price within that. Northeast to northwest will be a bit newer, some more expensive, and probably a bit younger. West is big houses not apartments.
There are zillions of apartment units that are withing easy distance of DFW. The area which might be most closely tied to the airport employee base is straight south in the Centerport complex where AA is headquartered. This would put him on the airport bus route and the east-west train line between downtown Fort Worth and downtown Dallas, which stops at the pro basketball arena. I think he would need a car to shop, but that is about it.
If he wants a more diverse environment not tied to the airport, lots of people his age live around downtown Grapevine. Rent is generally more expensive. Bedford is older and was upscale in another time.
Really he just needs to come look. It's not like DFW is in the slums, but it's not out in the country anymore either.