Discount / Promotion code: ZPXA111422 To book a flight with your promotion code, access United and enter your promotion code in the Promotions and Certificates box. When searching for flights click on “United or United Express Flights” radial dial. Discount is 2-10% pending fare class purchase. You may call the United Meetings Reservations Desk at (800) 426-1122. Booking fee is waived for Meeting Reservations.