This award seats price out at 40,000 AAdvantage miles plus $709 in taxes and fees for the Chicago O'Hare to London Heathrow route in Premium Economy. For context, this cabin typically runs around 70,000 miles on this route, making this a 43% discount off the usual redemption rate.
Premium Economy offers a meaningful upgrade over standard economy—more legroom, wider seats, and better meal service—which can make a real difference on an overnight flight to Europe, especially if you're traveling with kids who need space to sleep.
The catch: only 3 seats are currently showing as available. If you're booking for a family of four or more, this particular availability won't work, but couples or a parent-child trip could take advantage. Award space like this tends to disappear quickly once it's spotted.
One practical note: the $709 in taxes and fees is on the higher side, which is typical for premium cabin awards originating from or terminating in the UK. Factor this into your cost-per-point calculation when deciding if this redemption makes sense for your situation.
How to book
Search and book directly through American Airlines: https://www.aa.com/booking/choose-flights/1