When you call OMEGA you need to get the price for your trip leaving from all 3 of our airports (BWI, Dulles, & National) Type up the prices in a word document and attach it to the travel order. The purpose of this is to make sure we are selecting the cheapest airline flight. If you choose not to go with the cheapest then you will need to supply a justification. Locate Per Diem rates Omega phone number: 800-419-2312 DCB Travel Request Form Travel Reimbursement Form Hotel Occupancy Tax Exemption Certificate (to be completed and submitted to the hotel) State Tax Exempt forms library