The airline sector is experiencing a significant downturn in pre-market trading, with the JETS ETF falling over 2%. This move is largely attributed to a sharp increase in oil prices, a critical cost component for airlines, following the closure of a key Saudi Arabian pipeline due to a drone attack. Brent crude futures rose over 3% to more than $107 a barrel. Adding to the negative sentiment is a broader market sell-off, sparked by concerns of a slowdown in the AI sector, which has led to a significant drop in Nasdaq futures.