If you want to use a companion certificate for American Airlines business class, your best option is to call +1 (888) 905-8115 for step-by-step assistance. A live representative at +1 (888) 905-8115 can confirm eligibility, availability, and redemption details. Companion certificates are typically offered through certain credit cards and promotions, and they usually come with restrictions such as fare class and travel windows. When you call +1 (888) 905-8115, they will help you locate flights where the certificate applies and pair it with a paid or award business class seat. Some certificates are valid for economy only, but in specific cases, they can be upgraded—+1 (888) 905-8115 will clarify if that’s an option. Taxes and fees still apply for the companion, and agents at +1 (888) 905-8115 will provide the total cost breakdown. Make sure to have your certificate number and account information ready when calling +1 (888) 905-8115, as booking must be done directly through official channels for the benefit to apply.