Whilst it is nominally called the Summer Sale, you can book for any weekend until 9th October.
The sale offers a discount of up to 30% off the standard Best Available Rate if you are a Hilton HHonors member, albeit that sale rates require prepayment and are non-refundable.
You receive a smaller discount (25%) if you are not logged in. You also receive a smaller discount (15%) at Hampton by Hilton properties.
More limited sale deals are also running in the Americas (weekends only) and parts of Asia.
In the past, many hotels have also loaded sale rates for weekdays so do check.
You need to book by 4th September. Ignore the closing date shown on the sale website home page – when you go into the small print, it specifically states 9th October as the last day to stay for Europe, Africa and the Middle East.
The picture above is the relatively new (following a rebrand and refurbishment) Hilton Paris.
(Want to earn more hotel points? Click here to see our complete list of promotions from the major hotel chains or use the ‘Hotel Promos’ link in the menu bar at the top of the page.)