If you’re starting on the Alaska Airlines homepage, select the “Use discount or companion fare code” link under the flight search box. Or simply visit the flight booking page.

A travel expert has revealed how having this booking code on your plane ticket could get you bumped up. By Harriet Mallinson. 22:43, Mon, Sep 16, 2019 | UPDATED: 16:16, Tue, Sep 17, 2019.