The airline sector is trading lower today, reflecting ongoing investor concerns about the impact of elevated jet fuel prices on airline profitability. While crude oil prices have seen a slight dip recently on hopes of US-Iran talks, jet fuel costs have been persistently high throughout the month, forcing some carriers to cut back on less profitable routes. Ryanair's CEO commented today that while his airline will not add a fuel surcharge, he expects legacy carriers will, passing the higher costs to consumers and potentially leading to further industry consolidation.