JetBlue Airways’ stock dropped on Tuesday after the airline’s financial outlook disappointed investors.

The airline forecast a cost increase of up to 10% this quarter, excluding fuel, and estimated revenue could be up to 3.5% higher or as much as 0.5% lower compared to the same period last year.

This came as larger competitors Delta and United projected higher revenue growth, CNBC has reported.

JetBlue is focusing on cutting unprofitable routes and boosting revenue through higher-priced seats, and has also offered senior pilots voluntary early retirement packages.

Written by B.C. Begley