Delta Air Lines Inc. cut its profit expectations for the first quarter roughly by half on weakening travel demand, the latest sign that economic worries are pressuring consumer spending.

Delta Air Lines on Monday slashed its first-quarter profit estimates by half, sending its shares down 14%, and its CEO said the environment had weakened due to U.S. economic uncertainty.

Delta slashed its earnings forecast in a recent SEC filing, saying consumers are anxious due to economic uncertainty. It’s a sign that economic anxiety could be spilling over into domestic travel demand.