Austin is just close enough to Dallas that the time and hassle of flying isn't worth it. And you never know when I-35 construction or traffic will turn a three-hour drive into four-and-a-half (or longer). Megabus offers a convenient, cheap way to make the trip. The interstate under the wheels might still be a mess, but at least you're not behind the wheel. Read or get some work done, thanks in part to the Wi-Fi, power outlets and restrooms. The buses are spacious, the seats are comfortable, and so far the element of crazy among passengers is less than on the competition. Tickets start at $13. Buses leave from Market and Young streets in downtown Dallas.
us.megabus.com