UC reward LHR / Hong Kong return
We were looking at booking 2 x return reward flights from LHR Hong Kong.
New off peak reward is 115,000 air miles each plus approx £600 cash each
( taxes and fees )
However what would happen if I book the Hong Kong to LHR as a one way reward
57,500 and approx 350HKD ( £35 ) taxes and fees
And later that evening I was to book LHR to Hong Kong separately showing as 57,500 plus £300 taxes and fees
Although mileage redemption is the same taxes and fees are considerably lower by approx £250 per person or £500 per couple.
Would this be allowed by airline or would it be an issue ie when we book the second sector it would flag as a return and extra fees will be added ?
I would be grateful for any advice