Southwest will sell you round-trip tickets for less than $100 for the next 72 hours

From now until Thursday, October 12, Southwest Airlines will sell you tickets for as low as $49 one-way. As a result, travelers can even get their hands on round-trip tickets for less than $100.

The $49 tickets are for the airline's shorter non-stop domestic routes such as Baltimore to Detroit. While longer domestic routes could cost as $79 to $150 one-way.

Domestic destinations featured in the fare sale include Atlanta, Georgia; Austin, Texas, Dallas, Texas; Baltimore, Maryland; New York, New York; Boston, Massachusetts; Chicago, Illinois, and many more.

Tickets for domestic flights purchased as part of the fare sale are nonrefundable and covers travel from October 31 through December 19 of this year and from January 3 through February 14 of 2018.

In addition, all Friday and Sunday flights are excluded from the sale.

International destinations such as Havana, Cuba; Punta Cana, Dominican Republic; and Cancun, Mexico are also available, but cost more. Although, tickets for international travel are available during slightly different time frames.

Southwest Airlines is the largest low-cost carrier in the world with a fleet of more than 700 Boeing 737 airliners. The Dallas, Texas-based airline is known to offer massive fare sales several times every year. This month, Southwest inaugurated service using its all-new Boeing 737 MAX 8 airliners.

Click here to read the fine print.