Marriott Bonvoy reduces the transfer rate to three airline partners

Marriott Bonvoy is the only hotel programme where there is value – or at least minimal loss of value – from transferring your points into airline miles.

Whilst many hotel programmes have terrible airline conversion rates – see this HfP article – Marriott Bonvoy offers a 3:1 transfer rate.

Given that we value a Marriott Bonvoy point at 0.5p, you would be effectively ‘paying’ 1.5p per airline mile if you did this. It isn’t cheap but it’s not terrible.

However, Marriott Bonvoy offers a special bonus. If you convert 60,000 Marriott Bonvoy points to airline miles at once, you receive a 5,000 mile bonus.

This means that 60,000 Bonvoy points gets you 25,000 airline miles, a conversion rate of 2.4 to 1. This means that you ‘paying’ 1.2p per airline mile, based on a 0.5p per Bonvoy point valuation, which is very reasonable.

From 31st October, three airlines will no longer offer the extra 5,000 miles when converting 60,000 Bonvoy points. These are:

• American Airlines
• Avianca
• Delta Air Lines

It isn’t clear why, but you would be safe to assume it is either an increase in the price charged for the miles or a wish by the airlines to reduce the attractiveness of Marriott Bonvoy credit cards vs their own.

This is a blow for HfP readers who used the Marriott Bonvoy American Express card to collect American Airlines miles, as this was one of the few routes open to you in the UK.

My other issue with this change is that it adds to the complexity of the Marriott Bonvoy programme. We will need to add caveats in future whenever we mention this benefit, in the same way that Singapore Airlines moving to 3:2 in the American Express Membership Rewards programme broke the ‘all airlines are 1:1’ rule.

Sometimes it is worth programmes taking a hit on the financials if it means keeping things simple for users.

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How to earn Marriott Bonvoy points and status from UK credit cards (June 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.

SPECIAL OFFER: Until 15th July 2025, the sign-up bonus on the Marriott Bonvoy American Express Card is TRIPLED to 60,000 Marriott Bonvoy points. This would convert into 25,000 Avios or into 40 other airline schemes. It would also get you at least £300 of Marriott hotel stays based on our 0.5p per point low-end valuation. Other T&C apply and remain unchanged. Click here for our full card review and click here to apply.

You can apply here.

Marriott Bonvoy American Express Card

60,000 points (to 15th July) 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.

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

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)

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.