Get a 20% bonus on Starwood hotel transfers to American and US Airways

UPDATE – SEPTEMBER 2025:  This is an old article, and the credit card information given is likely to be out of date.

To learn about current credit card bonuses, benefits, terms and interest rate information, take a look at our directory of the top UK travel credit card offers – please click HERE or use the ‘Credit Cards’ menu above.  Thank you.

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For some reasons we don’t know about, Starwood Preferred Guest was not included in the current 25% bonus for transferring your hotel loyalty scheme points into Avios.

American Airlines and its new sister company US Airways have stepped into the breach with an offer of their own.

Until 31st July, you will receive a 20% bonus on all transfers of SPG – and only SPG – points to American and US.

The home page for this offer is here for American and here for US Airways.

Usually, 20000 Starwood Preferred Guest points would get you 25000 American Airlines or US Airways miles.  For transfers initiated by 31st July, that is increased to 30000 miles.

Note that the terms and conditions say that the bonus miles may post up to 7 working days after the base miles.

This could be an attractive offer for some people.  Remember that AA does not charge fuel surcharges except on BA and Iberia redemptions – flights to the US on AA planes only incur Air Passenger Duty.  If flying to the Middle East, 30000 American Airlines miles is good enough for a one-way flight to Abu Dhabi in business class on partner Etihad.

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How to earn Marriott Bonvoy points and status from UK credit cards (September 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 Card

20,000 points 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 The Platinum Card from American Express in detail here and you can apply here.

SPECIAL OFFER: Until 14th October 2025, the sign-up bonus on The Platinum Card from American Express is increased to 80,000 Membership Rewards points. This would convert to 120,000 Marriott Bonvoy points! The spend target is changed to £10,000 within SIX months of approval. T&C apply. Click here to apply.

The Platinum Card from American Express

80,000 bonus points and great travel benefits – for a large fee Read our full review

You can also earn Marriott Bonvoy points indirectly:

• American Express Preferred Rewards Gold Credit Card (20,000 bonus Amex points)
• The American Express Rewards Credit Card (10,000 bonus Amex points)

SPECIAL OFFER: Until 14th October 2025, the sign-up bonus on the American Express Preferred Rewards Gold Credit Card is doubled to 40,000 Membership Rewards points. This would convert to 60,000 Marriott Bonvoy points! The spend target is changed to £5,000 within SIX months of approval. T&C apply. Click here to apply.

and for small business owners:

• The American Express Business Gold Card (20,000 bonus Amex points)
• The American Express Business Platinum Card (50,000 bonus Amex points)

SPECIAL OFFER: Until 14th October 2025, the sign-up bonus on The American Express Business Gold Card is TRIPLED to 60,000 Membership Rewards points. This would convert to 90,000 Marriott Bonvoy points! The spend target is changed to £6,000 within three months of approval. The card remains free for the first year. T&C apply. Click here to apply.

SPECIAL OFFER: Until 14th October 2025, the sign-up bonus on The Platinum Card from American Express is increased to 80,000 Membership Rewards points. This would convert to 120,000 Marriott Bonvoy points! The spend target is changed to £10,000 within SIX months of approval. T&C apply. Click here to apply.

The conversion rate from American Express to Marriott Bonvoy points is 2:3.

Click here to read our detailed summary of all UK credit cards which can be used to earn Marriott Bonvoy points.