The project’s expansion comes after American Airlines and DFW agreed to increase investment in the terminal to $4 billion. American also extended its lease and use agreement with DFW to 2043 as part of the deal. The Fort Worth-based airline will occupy all of Terminal F.

Dallas Fort Worth International Airport (DFW) and Fort Worth-based American Airlines are stepping up a plan to accelerate and expand the scope of the airport’s new Terminal F. According to a release,

Terminal F at DFW International Airport is already expanding, years before it welcomes its first passengers. Airport CEO Sean Donohue announced Thursday that American Airlines plans to invest $4 billion to double the size of the terminal.