The TWA Flight Center at JFK (1962) is considered "Googie", at least by Wikipedia.[1] That was achieved with the technology of the Googie era. So was the "Theme Building" at LAX (1961) [2]. Both are buildings with vast, swooping curves and exuberant design, like Changi's terminal.
Both had problems in the era of TSA. TWA failed, and JetBlue has the TWA terminal now. The huge wings are gone, but now it has 20 security lanes, a "monument to human throughput". The LAX Theme Building has never been very useful; it's had a restaurant inside, but few went there post 9/11, because it's outside security and you'd have to go through screening again.
By the late 1960s, big clear-span roofs like the Dulles terminal and the Astrodome were going up. The technical problems had been solved. A bit after the original Googie era, though.