United Air Lines introduced the company’s first passenger recognition program in 1939. The 100,000 Mile Club campaign was conducted by United’s public contact personnel and awarded personalized plaques, with stars indicating additional 100K miles flown, to the airline’s frequent fliers. Membership reached the thousands by the 1950s. How many miles have you flown on United? See "Flying the Main Line: A History of United Air Lines", on display, post-security, in Terminal 3. http://bit.ly/TheMainLine Image: United Air Lines 100,000 Mile Club member plaque, 1965. Gift of John M. Burnard. 2004.093.004 This image was posted on October 06, 2017.