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Exchange rates matter, so be sure to research the currency value of whatever country you're traveling to before making pricey flight decisions. Destinations in Canada, Australia and pretty much anywhere in Western Europe currently boast strong currencies, so instead of Paris, try Budapest; instead of London, try Prague; and instead of Vancouver, try Hanoi. Obviously swapping Canada out for Vietnam is a bit extreme, but it pays - literally - to know how much the Vietnamese Dong offers in getting the biggest bang for your bucks. Also, be smart about where you change your currency (not at the airport).