Doha to Hong Kong in Sri Lankan Airways Business Class (Fri 27/1/17 to Mon 13/2/17) just £717@BudgetAir.co.uk
via Kayak.co.uk (other dates £772 to £787). Flights are via Colombo (with a very long 20 hour stopover on way back) as well as a 'technical stop' for one hour in Bangkok. You could always take a look around Colombo - a one or two day transit visa is free-of-charge and can be applied for online.
Please note that my example dates have you arriving in Hong Kong on Chinese New Year's Day (Sat 28/1/17). Quoted prices also assume that you are paying via debit card (I would recommend paying by credit card to provide some protection against airline failure/bankruptcy).
Obviously this deal won't suit everybody as you've got to find your own way to Doha (Qatar) first! However, getting business class flights at this price point is pretty amazing.
Sri Lankan Airways are part of the Oneworld alliance and these flights will earn 560 tier points with BA's Executive Club (i.e. 4 long-haul flights at 140 tier points each). This is just 40 points short of earning Silver status in one go! [Note: Silver status gives you business class lounge access even when flying BA economy]
See you on on-board - I'll be in Seat 1A. ;-)