The Till-Side Loophole: Airport Loyalty Schemes That Actually Shave Money Off Perfume in 2026
You have done the millilitre maths, checked the tester, and decided the airport price is fair. Then the till asks if you are a member — and you are not. Here is how Heathrow Rewards, World Duty Free promos, airport apps and airline schemes fit into the 2026 duty-free perfume price test, plus the places where they quietly fail to deliver.