The main purpose of this legislation, known as the "Don't Miss Your Flight Act," is to create a grant program aimed at improving surface transportation infrastructure that connects to public airports. The goal is to enhance access to airports, reduce traffic congestion, and expand transportation capacity, ultimately making travel more efficient for passengers. Key provisions of the legislation include the establishment of a grant program managed by the Secretary of Transportation. Eligible recipients of these grants can include states, local governments, and Indian Tribes.