Home Slickdeals Southwest Airlines – Airfare Sale Starting From $29 OW – Book by... Slickdeals Southwest Airlines – Airfare Sale Starting From $29 OW – Book by March 4, 2021 By ARCOM - 2 March 2021 102 0 SHARE Facebook Twitter Go to the deal page: Southwest Airlines – Airfare Sale Starting From $29 OW – Book by March 4, 2021