The airlines faced an unpleasant start to the week when chaos swept the tourism industry.British Airways and easyJet have canceled dozens of flights due to staff shortages, which has called into question plans for thousands of families.Shares of IAG, the owner of BA, fell initially but later rose 0.4 percent, or 0.62 pensions, to 141.8 pence. However, easyJet fell 0.2 percent, or 1.2 points, to...