WDIV ClickOnDetroit | Southwest Airlines offers flights from Detroit to Nashville, Atlanta, Denver for under $120 WDIV ClickOnDetroit Travel to Cancun, Cabo San Lucas/Los Cabos and Puerto Vallarta is valid only on Sundays through Wednesdays. Travel from Cancun, Cabo San Lucas/Los Cabos and Puerto Vallarta is valid only on Tuesdays through Fridays. Travel to/from Mexico City; ... |