20% bonus on SPG transfers to American Airlines extended to 31st August
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American Airlines has extended its promotion with Starwood Preferred Guest by another three weeks. Until August 31st, you will receive a 20% bonus on conversions of Starwood Preferred Guest (Sheraton, Westin, Le Meridien, W etc) hotel points to American Airlines.
AA still awards 100% of miles flown when you credit economy BA flights, compared to just 25% of miles flown if you credit to Avios. This means that you may be building up some AA miles anyway, and this is an opportunity to top them up.
The bonus is on top of the 25% bonus that Starwood gives to any airline transfer of 20,000 points or more.
This means that, for example:
10,000 Starwood points will get you 10,000 American miles
20,000 Starwood points will get you 30,000 American miles
The bonus is valid for multiple transfers during the promotional period. No registration is required.
Full details can be found on the American Airlines website here.
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How to earn Marriott Bonvoy points and status from UK credit cards (February 2025)
There are various ways of earning Marriott Bonvoy points from UK credit cards. Many cards also have generous sign-up bonuses.
The official Marriott Bonvoy American Express card comes with 20,000 points for signing up, 2 points for every £1 you spend and 15 elite night credits per year.
You can apply here.

Marriott Bonvoy American Express
20,000 points for signing up and 15 elite night credits each year Read our full review
You can also earn Marriott Bonvoy points by converting American Express Membership Rewards points at the rate of 2:3.
Do you know that holders of The Platinum Card from American Express receive FREE Marriott Bonvoy Gold status for as long as they hold the card? It also comes with Hilton Honors Gold, Radisson Rewards Premium and MeliaRewards Gold status.
We reviewed American Express Platinum in detail here and you can apply here.

The Platinum Card from American Express
50,000 bonus points and great travel benefits – for a large fee Read our full review
You can also earn Marriott Bonvoy points indirectly:
- American Express Gold (20,000 bonus Amex points)
- American Express Rewards Credit Card (10,000 bonus Amex points)
and for small business owners:
- American Express Business Gold (20,000 bonus Amex points)
- American Express Business Platinum (50,000 bonus Amex points)
The conversion rate from American Express to Marriott Bonvoy points is 2:3.
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