Air China will suspend flights between Beijing and the North Korean capital of Pyongyang starting on Monday — another sign of escalating tensions on the Korean Peninsula.

The state-owned airline said the move was a reaction to weak sales, not because of the isolated regime’s increasingly bellicose behavior.

“We will schedule flights on this route based on passenger demand,” a rep for the carrier told CNN.

But the suspension comes as nutjob dictator Kim Jong Un has threatened to stage another nuke or missile test despite US threats to retaliate — possibly even with a military strike.

President Trump wants the rogue nation to stop testing weapons and missiles and curtail its nuclear weapons program.

North Korea threatened a “merciless” response to any hostile military, economic or political moves by the “reckless” Trump administration, according to a statement from a North Korean spokesman, the network reported.