Originally Posted by
littlevoices
I suspect that taking advantage of the BA holiday double tier points on a number of sale fares could be the cheapest way. The
BA holiday scenario imagines that you aren't starting from scratch - otherwise getting to Gold would need a number of resets. The double points offer is also only open via the UK.
A DONE3/4 would be probably GBP3k / USD4500 including taxes even if super optimised.
BA flights to OTP (Bucharest) from London are probably only about GBP500 for
80x2x2 TPs (320TPs/flight), so three of these flights gets you BA Gold (if you're already Bronze/Silver), noting that BA needs a minimum of four BA segments to move up tiers.
BA gold is 1500 TPs.
LHR OTP is 80 TP one way in business.
BA Holiday scenario for 2x TP requires 5+ night package deal originating in UK, so you're going to be paying for more than just flights. T&C also state UK residents only. YMMV