How to use this calculator
- Enter what the direct flight from your home airport costs — in cash or Avios.
- Add the cost of the positioning hop to reach the cheaper departure city (include bags and airport transfers).
- Enter the onward flight from that city — again cash or Avios.
- If you use Avios anywhere, set how much an Avios is worth to you so both options compare in pounds. 1p is a common baseline; premium long-haul redemptions often beat it.
- Add the extra hours the detour adds and, optionally, what an hour of your time is worth — the tool then gives a time-adjusted verdict.
- New to the technique? Compare the best UK Avios credit cards to build a balance worth positioning for.
The pre-filled numbers are an illustrative example, not current prices. Replace them with your own quotes.