Where will Halkalı-Arnavutköy-İstanbul Airport Subway pass? Where will Halkalı-Arnavutköy-İstanbul Airport Subway pass? Where will Halkalı-Arnavutköy-İstanbul Airport Subway pass? Halkalı-Arnavutköy-Istanbul Airport Metro Line, which will consist of 6 stations and is currently under construction, will be 27 kilometers long. So where will the metro line pass? Reconstruction…

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