Spirit has round-trip flights from Dallas (DFW) to Myrtle Beach (MYR) for $123-$129, NONSTOP. Flights May to August. Departures on Tuesday, Thursday, and Sunday. Extended Weekends (Thursday-Sunday) available. Origin/Destination reversible.
Note: Spirit fares do not include a free carry-on bag. Only a small personal item, like a Jansport City Scout backpack is free. You can avoid paying for seat selection if you accept the randomly assigned seat prior to boarding.