First-class fliers have a code. It’s subtle and usually comes with a glass of champagne. If you want fit in before you fall flat in a sea of stares, learn the unspoken rules—lest you mistake the amuse ...

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Flying business or first class doesn’t always mean you have to pay eye-watering prices. Sometimes, a free upgrade can be down to luck, but there are plenty of other ways to find cheap business and ...

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