The 1959 Qantas flight was a promotional "round the world" flight. Regular jet service began out of HNL to US in 1960-1961 -- Pan Am and United. Honolulu has always been a busy airport, and for years had the longest runway, but that was a runway, not a jetway. The first jetways were additions completed in 1959. That is to say, in 1961 jet service was a very new thing. Flights were longer, had more stops.
And in 1961 HNL had old-style terminals. Their new jet-age terminal was not completed until August 1962.