Kim also participated in a so-called "selfie" with Singapore's foreign minister, Vivian Balakrishnan, who uploaded the photo to Twitter. Crowds looked on as images aired of Kim disembarking from the Air China flight and shaking hands with Singaporean Prime Minister Lee Hsien Loong on Sunday.
Nobody is pretending North Korea can ape Singapore but the message to Kim of the hermit kingdom is clear - come in from the cold on the steaming hot humid south Asian island of Singapore.
Details were not shared about how the discussions have progressed so far and Trump and Kim have yet to meet face-to-face.
North Korean leaders, who have been subject to some of the world's toughest ever sanctions, have long wanted to meet with the US president, in part because of the global legitimacy such a summit would provide.
The leader of North Korea has arrived to Singapore in what has been a meticulously coordinated scheme shrouded in mystery.
The US President is reportedly spending a bit more time with PM Lee today - two hours of talks and a working lunch together with government officials from respective countries, according to Channel NewsAsia.
Trump and Kim may well end up branding tomorrow's summit a success.
"The fact that we prepared this in two weeks, this adds to logistics demands by officers who worked around the clock", Shanmugam said at a security briefing yesterday.
They also mention the goal of his trip, a "historic first meeting with the U.S. president", describing not only Mr Kim's itinerary but also the fact that he used a Chinese plane to fly to Singapore, rather than his own personal jet.
The United States is willing to offer North Korea "unique" security guarantees if it embarks on "complete verifiable and irreversible denuclearization", Secretary of State Mike Pompeo said Monday.
Later, Pompeo shared a picture of Trump speaking with the staff of the U.S. Embassy in Singapore.
The first meeting between the two leaders is scheduled for Tuesday at 9 a.m. Singapore time - Monday at 9 p.m.
Kim told Lee: "The entire world is watching the historic summit between the DPRK and the United States of America, and thanks to your honest efforts. we were able to complete the preparation for the historic summit".
Choi Ho-chul, a 73-year-old former bank employee, said he doubts the North would give up nuclear weapons, which he said were a "means to control its population". Trump had previously said the talks might extend beyond the first day.
Mr. Trump's top economic adviser, Lawrence Kudlow, said Mr. Trudeau's press conference had been a "betrayal" because Mr. Trump couldn't afford to show any weakness before his meeting with North Korea.
Trump told reporters the Singapore summit is "really a get-to-know-you kind of situation".