Yes, American Express Membership Rewards points can be transferred to British Airways Executive Club at a 1:1 ratio. This means 1,000 AmEx points equal 1,000 Avios. In 2026, transfers are typically instant, though first-time linking of accounts might take up to three working days. A minimum of 1,000 points is required for a transfer, and additional amounts must be in increments of 500. This partnership is highly valued by travelers for booking "Reward Flights" on British Airways or its oneWorld alliance partners. It is a "pro-tip" to check for occasional transfer bonuses where AmEx might offer a 20-30% boost, effectively making your points go much further for international travel or class upgrades.