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The company were one of the last to offer flights into the hermit kingdom and have cited poor demand as the reason for the cancellation.
It follows a request by Donald Trump to squeeze Kim Jong-un’s regime with growing sanctions after the refusal to relinquish its nuclear weapons and missile programs.
An official in the company's Beijing-based press office, who only gave his surname as Ding, said that flights were suspended because "business was not good".Related articles
He declined to comment on when flights might resume.
The suspension by China's national flag carrier comes shortly after a visit by a senior Chinese envoy to the city and also coincides with a US decision to put North Korea back on a list of state sponsors of terrorism.
Air China flights to Pyongyang, which have traditionally operated on Monday, Wednesday and Friday, began in 2008, but have frequently been cancelled because of unspecified problems, state media has said.
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Last year, Air China halted flights seasonally for winter but resumed them in March. So far it is not selling tickets for any 2018 flights, according to Routes Online.
One staff member in the company's Pyongyang office who declined to give his name told Reuters that Air China can resume