UAL Corporation is the former name of United Airlines Holdings, an airline holding company, incorporated in Delaware with headquarters in Chicago, Illinois. UAL held a 100 percent controlling interest in United Airlines, Inc., one of the world's largest air carriers, and is a founding member of the Star Alliance. It was announced on May 3, 2010, that UAL Corporation and Continental Airlines, Inc. would pursue a merger pending government approval. UAL Corporation would acquire Continental Airlines, Inc. and change its name to United Continental Holdings (UCH). On October 1, 2010, UCH, formerly UAL Corporation, announced completion of the merger. On Thursday June 27, 2019 United changed the name of its parent company from United Continental Holdings to United Airlines Holdings.

Westin Hotels & Resorts is an American upscale hotel chain owned by Marriott International. As of June 30, 2020, the Westin Brand has 226 properties with 82,608 rooms in multiple countries in addition to 58 hotels with 15,741 rooms in the pipeline.