taipei/beijing air china ltd indefinitely suspend flight beijing pyongyang cite poor demand north korea face grow sanction unite state nuclear weapons missile program official company beijing-based press office give surname ding tell reuters wednesday flight suspend business good decline comment flight might resume suspension china national flag carrier come shortly visit senior chinese envoy city also coincide u.s. decision put north korea back list state sponsor terrorism air china flight pyongyang traditionally operate monday wednesday friday begin 2008 frequently cancel unspecified problems state media say last year air china halt flight seasonally winter resume march far sell ticket 2018 flight accord rout online one staff member company pyongyang office decline give name tell reuters air china resume flight whenever enough demand office operate normally even schedule flight beijing pyongyang air china beijing-based press office decline provide comment company cancel flight april late say would increase number may unite state urge china press north korea stop unite state see belligerent defiance u.n. resolutions china foreign ministry tuesday say hop party could contribute resolve issue korean peninsula peacefully also say aware air china situation add airlines make decisions base market need air china indefinitely suspend flight beijing pyongyang