EVEN for a global industry like aviation, Primera Air’s business model seems remarkably cosmopolitan. The Icelandic-owned budget airline is headquartered in Latvia, but mainly operates low-cost flights from Denmark and Sweden to sunny places in the Mediterranean. This summer, it will begin long-haul flights from Britain and France to America. The company bears more than a passing resemblance to Norwegian Air Shuttle, another nominally Scandinavian airline with global aspirations. More than two-thirds of Norwegian’s capacity by passenger-km now bypasses its home country, and the rapid growth of its long-haul operations are proving to be a serious challenge for legacy carriers such as British Airways. And its tentacles are spreading around the world. This autumn, the carrier will begin operating domestic Argentinian flights, 12,000km away from its home base.