Additional flights operated by British Airways and Qatar Airways have been added to 14 destinations.
The joint business agreement between the oneworld alliance members will see extra services from Heathrow, via Doha, to: Adelaide, Auckland, Canberra, Goa, Hanoi, Jakarta, Manila, Maputo, Melbourne, Pattaya, Penang, Perth, Phuket and Sohar.
They will be on sale on British Airways’ website from March.
Return fares from Heathrow to Jakarta start from £511, return flights to Phuket start from £555 and return flights to Hanoi start from £552.
From July 1, British Airways will deploy its newest long-haul aircraft, a Boeing 787-9 Dreamliner, on its Heathrow to Doha services.
The two airlines already codeshare on 48 global routes and are looking at possibilities to extend the arrangements further.
Alex Cruz, British Airways chairman and chief executive, said: “We are very pleased to be extending and deepening our joint business relationship with Qatar Airways which will bring extra benefits and additional routes to customers using both airlines around the world.
“We hope that customers in the UK can now make even easier connections on flights to exciting cities such as Manila, Hanoi, Melbourne and Auckland. Our Executive Club members will also be able to earn and redeem Avios on these new services, giving them even greater benefits.”
Qatar Airways Group chief executive, Akbar Al Baker, said: “The UK is one of our most important markets and one where we have significantly increased our capacity over recent years. It is great news that we can extend our relationship with British Airways and offer customers extra benefits by increasing the number of code sharing opportunities on our network. We look forward to further developing our joint business in the near future.”