How long is the flight time from Papua New Guinea to North Korea?

What is the approximate flight time between the places Papua New Guinea, officially the Independent State of Papua New Guinea, the country in South East Asia, occupying the eastern half of the island of New Guinea and numerous offshore islands and North Korea, officially the Democratic People's Republic of Korea (DPRK; Chosongul: 조선민주주의인민공화국), the country in East Asia, occupying the northern half of the Korean Peninsula?

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I followed this chain of reasoning:

I know from locally stored knowledge that:
5°54'19"S is the latitude of Papua New Guinea ([fact: ["242903899@trueknowledge.com"]])

39°01'58"N is the latitude of North Korea ([fact: ["374691491@trueknowledge.com"]])

147°07'00"E is the longitude of Papua New Guinea ([fact: ["645789848@trueknowledge.com"]])

127°15'23.42"E is the longitude of North Korea ([fact: ["701772944@trueknowledge.com"]])

By calculation (generator: ["distance_between3@trueknowledge.com"]) I know that:
5,395.92282578 kilometres is the distance between Papua New Guinea and North Korea

By calculation (generator: ["flight_time_between_two_places@trueknowledge.com"]) I know that:
7 hours is the flight time between Papua New Guinea and North Korea

I used the following facts to provide this answer:

5°54'19"S is the latitude of Papua New Guinea

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39°01'58"N is the latitude of North Korea

agree disagree edit

147°07'00"E is the longitude of Papua New Guinea

agree disagree edit

127°15'23.42"E is the longitude of North Korea

agree disagree edit