The switch from the IATA northern winter to summer flight schedules took place without Brexit-related disruptions, but the continuing uncertainty about the timing and the terms of the UK’s pending exit from the European Union has begun to affect yields, EasyJet warned on Monday. In a trading update, CEO Johan Lundgren said the London Luton-headquartered low-cost carrier (LCC) witnessed “softness” in both the UK and Europe for the second half of its financial year ending September 30 owing to “macroeconomic uncertainty and many unanswered questions surrounding Brexit, which are together driving weaker customer demand.” Given the uncertainty, he added, EasyJet’s second-half outlook has turned “more cautious,” projecting revenue per seat at constant currency only “slightly up.” EasyJet steered away from providing exact numbers on the outlook for the April to September period, and said only the projected slight seat revenue increase reflects weakening third-quarter underlying demand and an expected year-over-year rise in the fourth quarter as a result of yield initiatives and an assumption of a more certain Brexit outlook.