AIP Grant Payments

The U.S. Department of Transportation (DOT) has fully implemented its new department-wide electronic grant payment system, Delphi eInvoicing System. The system provides a web-based standardized portal for grantees to electronically request grant payments and monitor payment status. All airport sponsors have transitioned to this new system.

Delphi eInvoicing System Training & Help Desk

The DOT has developed a variety of training resources to help grant sponsors and FAA personnel learn to use the new Delphi eInvoicing System. These resources include web-based training videos, desktop user manuals, and quick reference guides. Please visit the DOT Delphi eInvoicing Training web site links below to access these materials.

  • Office of Airports Grant Payment Policy Training Presentation for Sponsors and Consultants: PPTM (26.1 MB), PDF (1.7 MB) (updated 10/21/2020)

Delphi eInvoicing Help Desk

For all questions about the Delphi eInvoicing System, please contact the Customer Service Center Help Desk. The Help Desk is available from 6:00am ET through 9:00pm ET, Monday - Friday, including holidays.

  • 1-405-954-3000, Option 4, Option 3
  • Toll Free: 1-866-641-3500, Option 4, Option 3

Delphi eInvoicing System Access

Prior to accessing the Delphi eInvoicing System, all grant sponsors must create a user account. is an authentication platform shared by United States government agencies to streamline the login process.

Steps required to activate your account:

  1. Contact your local RO/ADO to submit a request for access to the Delphi eInvoicing System.
  2. Once your application for access to the Delphi eInvoicing System has been approved and your account has been activated, you will receive an e-mail informing you that your account has been approved and instructions for new and returning users.
  3. If you are accessing the Delphi eInvoicing System for the first time, you must first create a user account. Help Center

Delphi eInvoicing System

Last updated: Tuesday, August 2, 2022