American Express Membership Rewards points transfer to British Airways Avios at 1:1, so 1,000 points become 1,000 Avios. Amex lists the same 1,000-to-1,000 ratio for three more Avios programs: Iberia Club, Aer Lingus AerClub and Qatar Airways Privilege Club.
That's the whole ratio story. The parts that actually decide whether a transfer goes well are timing, the limits Amex sets, and what happens to Avios once they land. Transfer bonuses sit on top of all of it: while one runs, you get a percentage of extra Avios on each transfer, like the 30% bonus we covered in September 2026. Here's how each piece works, taken from Amex's transfer partner page and British Airways' own Club pages.
The Four Avios Programs Amex Lists
On Amex's transfer page, four partners pay out in Avios, and all four show "1,000 Points = 1,000 Avios":
- The British Airways Club. Minimum 1,000 points, maximum 999,000, in 1,000-point increments.
- Iberia Club. Same limits: 1,000 minimum, 999,000 maximum, 1,000-point increments.
- Aer Lingus AerClub. Same again.
- Qatar Airways Privilege Club. Minimum 1,000 and 1,000-point increments, but the maximum is 750,000 points.
Each partner's terms say enrollment in that program is required before you transfer, so open the account before you need it.
How Long an Amex to Avios Transfer Takes
Amex gives two answers, and they're worth reading together. The partner card on the transfer page says "Estimated Transfer Time 48 hours" for all four programs. The terms behind each one say transfers "are normally immediate, but please allow up to 72 hours" for British Airways, Iberia and Aer Lingus, and "up to 48 hours" for Qatar.
So plan for the longer window. The terms also say "no booking can be made until the Avios are credited," which means a seat you found on Monday isn't yours until the Avios actually show up.
The Transfer Is One Way
Amex's terms for every Avios partner say that once you transfer Membership Rewards points, "they cannot be transferred back to your Membership Rewards account." After that, they're governed by the airline program's own terms.
That's the single biggest reason to confirm the award before you move anything. Search the flight, check the Avios price and the cash portion, then transfer only what the booking needs. Amex's terms flag that "taxes, fees, charges and surcharges, including airline surcharges, may apply" on redemptions with all four partners.
What Happens After the Avios Land
Here's the part that makes the choice of partner less stressful. British Airways says you can transfer Avios between your British Airways Club account and your Iberia Club, AerClub, Loganair Loyalty, Vueling Club, Qatar Airways Privilege Club or Finnair Plus accounts. BA says the Avios arrive in the chosen account "immediately," you can do it "as often as you like," and "the value of your Avios will be the same."
In practice, the Amex partner you pick isn't a permanent decision about where the Avios get spent. Two more BA rules are worth knowing:
Avios don't expire as long as you "collect, spend, buy or share at least one Avios every 36 months," according to BA's About Avios page.
On BA's own Reward Flights, the cash portion is fixed. BA's U.S. page advertises "as little as $10 and 20,000 Avios" for a short-haul flight, or "from $300 and 55,000 Avios to London." On Iberia, American Airlines and other oneworld partners, BA says the cash amount is variable rather than fixed. BA also guarantees a minimum number of reward seats on its flights to and from London Heathrow and London Gatwick: at least eight in economy, two in premium economy and four in business.
How Amex to Avios Transfer Bonuses Work
A transfer bonus is a temporary boost on top of the base ratio. The 1:1 stays, and for the length of the promotion you get a percentage of extra Avios on each transfer.
Our coverage of that 30% bonus shows what one looks like. When we checked BA's Club offers page on September 30, 2026, the one current offer listed was the 90,000 Avios welcome bonus on the British Airways Visa Signature card.
Say you're holding 50,000 Membership Rewards points and a 30% bonus lands. At 1:1 that's 50,000 Avios, and the bonus adds 15,000 more, for 65,000. That's great if the seat you want costs 60,000 Avios and you were 10,000 short. It's worth nothing if you move the points with no booking in mind, because the transfer can't be reversed.
That's the rule for any bonus: price the award first, then decide whether the bonus closes a gap. A bonus is a reason to transfer sooner for a trip you've already found, not a reason to transfer at all.
Where I'd Start
Transfer at 1:1 when you have a specific reward seat priced and the Avios in hand would book it. Open the British Airways Club account first if you don't have one, since BA's transfer page describes moving Avios from your BA Club account to Iberia, Aer Lingus, Qatar and the others. Allow up to 72 hours before you count on the Avios, and check the cash surcharge on the exact flight before you move a single point.
If a bonus shows up while you're planning a real trip, take it. If there's no trip, keep the points in Membership Rewards, where you can still send them to another Amex partner later.
Sources
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