EXHIBIT 21.1 SUBSIDIARIES OF FROZEN FOOD EXPRESS INDUSTRIES, INC. Jurisdiction of Name of Subsidiary Incorporation ------------------ --------------- FFE Transportation Services, Inc. Delaware AirPro Holdings, Inc. (formerly W&B Refrigeration Service Company, Inc.) Delaware Conwell Corporation Delaware Conwell, LLC Delaware Lisa Motor Lines, Inc. Delaware FFE Logistics, Inc. Delaware Compressors Plus, Inc. Texas Compressors Plus, Inc. * Delaware FFE, Inc. Texas Conwell Cartage, Inc. * Texas Frozen Food Express, Inc. * Texas Middleton Transportation Company * Texas Each subsidiary does business under its corporate name. * Inactive