Yeah, Neil your a little off on this one.
The big Chicago business family, the Pritzkers own all the Hyatt brands (Grand Hyatt, Park Hyatt, Hyatt Regency etc...) in addition to owning the Best Inns, Microtel Inns, and Hawthorne Suites brands. Pritkers did own Braniff 2 (with the white and maroon A320s), but got rid of it.
United has never been associated with a hotel chain.
As mentioned, Pan Am owned Inter-Continental hotels, but sold it. It is now owned by Holiday Inn parents Bass Lodging Group in Atlanta (a subsidiary of the British firm Bass PLC).
At one time, Hilton International and TWA were owned by the same firm, but TWA was spun off and Hilton International was acquired by Ladbrooke in England. Ladbrooke has since been renamed Hilton International and is not related to the US firm Hilton Inc. based in Beverly Hills, CA.
SAir group owns the Swissotel chain, but most hotels (including the DC and NY properties) are franchised and owned by an American REIT called Doral (formerly MeriStar).
SAS owns a piece of the SAS Radison Group which is a joint venture between the Scandinavian airline and the Mineapolis based parent of Radison: Carlson Companies. Few of the actual SAS Radison Hotels are owned by Carlson, but the brand is.
JAL owns the Hotel Nikko brand, which has a very limited presence in the US. The former Essex House in NYC, which was a Nikko is now owned by Starwood and operated as a Westin.
ANA owns ANA Hotels, also very few of which are located stateside.
Turkish Airlines owns the very large Roosevelt Hotel in Manhattan.
Harrah's Entertainment is a major investor in National Airlines.
Airmale, Sheraton is a subsidiary of the US hotel giant, Starwood Lodging Group in White Plains, NY. Starwood also owns: Westin, Four Points, W, St. Regis, and The Luxury Collection.