The Doha-based carrier is expanding its footprint in Africa.
The carrier launched its first flight between Harare and Victoria Falls in 2015.
The project will add space for passengers, commercial areas, and a dedicated entry for bus arrivals.
The carrier will operate the route with its new Embraer E195-E2 aircraft.
The carriers’ new agreement covers 19 destinations in Africa, Asia, and the Middle East.
Red Sea International Airport is Qatar Airways’ 12th destination in Saudi Arabia.
The new deal is meant to improve connectivity between Reunion Island and Southern Africa.