Shares of Delta Air Lines, Inc. (NYSE:DAL) and United Airlines are trading lower amid the Israel-Hamas conflict, which has caused travel uncertainty and led to U.S. airlines suspending flights to Israel. The suspension of flights can have a direct negative impact on their financial performance. Geopolitical conflicts can also lead to an increase in oil prices, disrupting oil supplies or creating concerns about oil production in certain regions, which can eat into airlines' profit margins.