Need to book a flight? Southwest Airlines offers hot deals in 72-hour sale

Southwest Airlines is offering a chance for travelers to book less expensive air travel through a special 72-hour sale. 

The sale runs through 9:59 p.m. Thursday and has the following qualifying dates. 

• Aug. 20 through Dec. 18 for continental U.S. travel
• Sep. 3 through Nov. 2 for inter-island travel in Hawaii
• Sept. 4 through Dec. 5 for travel to and from San Juan
• Aug. 20 through Dec. 11 for international travel

Below are examples deals under $100 from Detroit.

• Chicago - $49
• Baltimore - $49
• Nashville - $79
• St. Louis - $79

 For more flights, click here.