Southwest Airlines offering $100 round-trip flights during 72-hour sale

A Southwest airline plane is seen on the tarmac at Phoenix Sky Harbor International Airport on September 19, 2016 in Phoenix, Arizona. (Photo by DANIEL SLIM/AFP/Getty Images)

A Southwest airline plane is seen on the tarmac at Phoenix Sky Harbor International Airport on September 19, 2016 in Phoenix, Arizona. (Photo by DANIEL SLIM/AFP/Getty Images)

NEW YORK — Southwest Airlines is giving you the chance to get away for just $100.

The sale started Tuesday morning and runs until Thursday at 11:59 p.m. Ticket prices for certain one-way tickets start at $49 with round-trip tickets for $100.

Customers can book trips anywhere in the United States between Nov. 30 and Dec. 20 as well as Jan. 4 through Feb. 15.

Round-trip tickets to Puerto Rico are valid from Nov. 30 to Dec. 8 and Jan. 17 through March 2.

International travel is valid from Nov. 30 through Dec. 13 and Jan. 10 to March 2.

Fares are nonrefundable but may be applied towards future trips on Southwest Airlines.

Visit Southwest’s website to buy tickets.