Photo by Daniel Berehulak/Getty ImagesGetty ImagesInternational Consolidated Airways (IAG) has made a strong start to the year with robudt travel spending from holidaymakers and business travellers enduring.At 184.9p per share, IAG’s share price rose 1.1% in Friday trading.Revenues at the British Airways owner rose 9.2% in the first quarter, to €6.4 billion, as passenger revenues increased 11.7% to €5.6 billion.Cargo revenues dipped 12.4% year on year, to €283 million.Strong NumbersThe FTSE 100 firm carried ...