All foreign travel funded by contract or grant funds requires prior approval of the funding agency.
Federal contracts and grants require the use of U.S. Flag carriers unless otherwise approved by the sponsoring agency. This decision must be made prior to submitting the proposal to the funding agency and the appropriate federal per diem requested in the proposed budget. Foreign travel charged to state funds or trust funds may use either state rates for subsistence or the federal per diem depending on the availability of funds and subject to the approval of the authorized account holder. If an employee elects to claim the federal per diem, regardless of funding source, the published per diem is the maximum amount that can be reimbursed. A receipt of lodging expenses from a commercial lodging establishment must be presented for reimbursement.