Until TOMORROW! Catch a flight with Southwest Airlines at a low price of $49 for domestic flights. All flights have to be booked by October 12th to get the deal. Yes, there are some restrictions- no flights on Fridays and Sundays, non-stop flight options only. Regardless, need a getaway? Now is the time. One-way domestic flights will only cost you $49-$129! Take advantage of this sale before Thursday, October 12th at 11:59PM!