Yes, you can earn Avios points with American Express through two primary methods in 2026. First, there are co-branded British Airways American Express Cards where you earn Avios directly on every purchase (e.g., 1.5 Avios per £1 on the Premium Plus card). Second, if you hold a standard Amex Membership Rewards card (like the Gold or Platinum), you can transfer your points to the British Airways Executive Club or Iberia Plus at a typical 1:1 ratio. In March 2026, Amex and British Airways are celebrating their 25th anniversary with a special "Avios Boost" offer, allowing eligible cardholders to earn up to 25% more Avios on their qualifying spend until April 8, 2026. This makes it an exceptionally lucrative time to use your Amex for travel bookings, as welcome bonuses for new members are also currently elevated to help celebrate the milestone.