The term "eligible fares" refers to the ticket prices or rates that meet the requirements or qualifications for a particular benefit, offer, or service. Full definition
See the offer page for complete terms and conditions, including eligible fare classes. (travelcodex.com)
Then, enjoy perks like a minimum of 250 miles for eligible fares, seat discounts, lounge access, and a lot more. (upgradedpoints.com)
You pay just $ 99 (plus government taxes & fees) for a companion domestic economy round - trip ticket along with your own eligible fare. (creditdonkey.com)