by Erica Ho for Maphappy

I can’t explain airline pricing, but I do know some plane tickets can be cheaper depending on where you buy them or, even better, where you appear to buy them from. This is all about leveraging foreign currencies and points-of-sale to your advantage.

For reasons I never quite understood, every time I tried to book a domestic flight in another country, the prices were always exorbitant.

But, say, once I was in Bangkok, that same flight that was once $300 would fall to $30 almost inexplicably. This phenomenon is because a ticket’s point-of-sale—the place where a retail transaction is completed—can affect the price of any flight with an international component.

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