NEW YORK Commercial plane prices, already lifted in recent years due to pandemic supply chain shocks, are poised to climb further as Boeing and Airbus are buffeted by trade tariffs . "Compared with 2018, prices for commercial jets have risen by around 30 percent," an aviation expert told AFP on condition of anonymity. The American and European aerospace giants have grappled with higher expenses for primary materials such as titanium, components and energy. Richard Aboulafia, managing director