British Airways Avios Like Aer Lingus, it uses Avios as its reward program; these are interchangeable with Iberia, Aer Lingus and Qatar Airways. AmEx points transfer to British Airways at a 1-to-1 ratio.

In 2026, the standard transfer ratio from American Express Membership Rewards to British Airways Avios is 1:1 in the UK and 1:1 in the US. This means that for every 1,000 Membership Rewards points you transfer, you receive 1,000 Avios. Transfers are typically instant, making this one of the most high-value partnerships for booking "oneworld" flights. However, it is important to watch for transfer bonuses; Amex often runs limited-time promotions where the ratio might improve to 1:1.2 or 1:1.3 (e.g., 1,000 points becoming 1,300 Avios). For "power travelers," using the "British Airways Executive Club" as a transfer partner is a primary strategy for booking short-haul domestic flights on partners like Alaska or American Airlines, as these "reward flights" often require fewer Avios than the equivalent miles through the partner's own loyalty program.