Southwest Airlines To Fly Nonstop Between Los Angeles (LAX) And Cancun, Los Cabos, And Puerto Vallarta, Mexico Yahoo Finance 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. Fares are valid only on ... |