Miles or a cash ticket? Value the fare you would actually buy
Original explanation or a governed summary with official sources; current official terms remain authoritative.
Compare a trip you would actually pay for
Find the cash ticket you would otherwise buy and align dates, airports, cabin, baggage, and change conditions as closely as possible. If you would normally buy economy, using a high business-class sticker price can inflate the apparent return. You can still choose the comfort upgrade; record separately what you would willingly pay for it.
Cash and award tickets may include different benefits. Add necessary baggage, seating, or transport costs to the relevant option before comparing. An extra hotel night caused by the award itinerary belongs in the calculation. Shared costs you would pay under either option need not be deducted twice.
Worked example: how HK$0.10 per mile is calculated
These are hypothetical figures, not a current fare or award requirement. A suitable cash ticket costs HK$3,600 including taxes. A suitable award costs 30,000 miles plus HK$600 in taxes and surcharges. Cash saved is HK$3,600 − HK$600 = HK$3,000. Divide by 30,000 miles to get HK$0.10, or ten Hong Kong cents saved per mile.
If converting points costs another HK$200 and the award's schedule causes HK$300 of extra transport costs, savings fall to HK$2,500, or about HK$0.0833 per mile. This values one particular booking. It is not a universal miles price, and it does not automatically assign a value to your time, inconvenience, or rewards a paid ticket might earn.
Test the result against a cheaper cash fare
Keep the hypothetical 30,000-mile award and HK$600 cash charge, but reduce the acceptable cash fare to HK$2,100. Before other costs, savings become (HK$2,100 − HK$600) ÷ 30,000 = HK$0.05 per mile. The miles requirement is unchanged, yet a fare reduction halves this booking's value per mile.
Consider any usable cashback you would give up by converting bank rewards and whether a future trip gives those miles a better purpose. Avoid changing to a destination you do not want just to increase the calculated return. The useful outcome is a trip that suits you.
Recheck the total and conditions before payment
Use the arithmetic to support the decision, then review the official booking's final miles and cash amounts, selected cabin, individual flights, and change or cancellation terms. If dates remain uncertain, a high calculated value may not compensate for unsuitable flexibility. Accept the complete itinerary and conditions before paying.
- Is the cash ticket an alternative I would actually buy?
- Have I deducted award taxes, surcharges, and additional costs?
- Are baggage, cabin, connections, and flexibility acceptable?
- Does the final miles and cash total still match the comparison?
Official references
This guide is our original explanation; official sources remain authoritative for current product and programme details.