If there's anything to be learned searching for airfare on the internet, it's that the lowest fare is not always your friend. CBS News travel editor Peter Greenberg explains.

(Illustration by Getty Images)

<p>If there's anything to be learned searching for airfare on the internet, it's that the lowest fare is not always your friend. CBS News travel editor Peter Greenberg explains.</p>
<p>(Illustration by Getty Images)</p>

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