Anyone who's lost an evening researching flight deals knows that airfare pricing can seem pretty random -- high one week, low the next and long-distance often cheaper than short-haul.
원문출처 : http://www.cnn.com/2016/09/16/aviation/airline-pricing-secrets/index.html
원문출처 : http://www.cnn.com/2016/09/16/aviation/airline-pricing-secrets/index.html