However, like with all budget airlines, add up the total price before you complete the purchase. Frontier, which doesn't come close to Delta's stellar on-time arrival rate, charges to select a seat and for any baggage that isn't your personal item.
If you don't pack like a champ or aren't okay having your seat assigned to you at the airport, you may want to look into the airlines "The Works" package. For $58.56, you get a carry-on, a checked bag, a seat reservation, and priority seating. If you're going to use some of that anyhow, this could be a cheaper option.
There are more than 200 routes with prices below $50 for a one-way ticket. So, there's probably a route worth exploring in your area. Maybe you'll get lucky and be headed south when the next winter storm arrives.