Singapore Airlines have hopefully started a new craze in the competition for our business on an airline. You can now pay with both cash and air miles. Although they don't currently have any discounts to Manila at the moment, with the cheapest flight being £956, the 16,000 air miles I have would give me a £100 discount ..... They just finished a promotion on the 8th, where the cheapest flight was £685, so I will wait until another offer comes along.