There are many airlines which operates flights in Bangladesh. They have local office too. To know their sales and booking office located in Bngladesh, please follow the instructions:
Airlines Sales and Booking Office in Bangladesh
Click any airlines link given below. After that you will be redirected to the information page of that airline’s Bangladesh sales and booking office:
Gulf Air China Southern Airlines
Fly Dubai Qatar Airways
So, visit those airlines office or contact to them so that you can buy any airlines cheap tickets to travel your favourite destinations.