Creates a Department of Transportation grant program to finance transportation projects that connect to or are within 5 miles of a public airport. Eligible recipients (States, Indian Tribes, local governments, and public airport agencies) may receive funding for highways, public transit, or passenger rail projects that reduce congestion, expand capacity, improve access, or rehabilitate infrastructure, with a federal authorization of $1,000,000,000 per year for fiscal years 2027–2031 and program rules including cost-share and funding requirements set by the Secretary of Transportation.