United adds restrictive Base fare to premium cabins (insideflyer.com)

United Airlines is rolling out a cheaper Base fare for First and Business Class on select domestic and short-haul international routes, including Canada and Latin America. All three tiers—Base, Standard, Flexible—offer the same seat and cabin service, but differ in baggage allowances, change fees, and refund eligibility. Base fares carry the most restrictions, while Flexible allows full refunds, following an earlier test in Polaris and Premium Plus cabins.