Sultan of Brunei Darussalam Haji Hassanal Bolkiah left Dhaka for his country by a special VVIP flight on Monday morning.
Foreign Minister Dr AK Abdul Momen saw him off at Hazrat Shahjalal International Airport.
He also handed over an album to the Sultan containing the photos of his two-day visit that concluded on Sunday evening.
The Sultan arrived in Dhaka on Saturday afternoon and held meetings with President Abdul Hamid and Prime Minister Sheikh Hasina on Saturday and Sunday respectively.
The two friendly countries signed four bilateral cooperation documents, including a memorandum of understanding (MoU) on energy cooperation after his official talks with the Prime Minister on Sunday.