This award availability on the Chicago to London route comes in well below what you'd typically expect to pay. At 88,000 miles one-way in business class, you're looking at roughly 37% off the standard rate of around 140,000 miles for this cabin and route.
Availability appears strong for travel on August 12, 2026, with plenty of seats showing in searches. That's a useful window for families looking to time a trip around the end of summer break, and booking this far out gives you flexibility to plan around it.
The low taxes on this routing are worth noting. At just $25, you avoid the hefty carrier surcharges that often come with transatlantic business class awards on other programs—making this a clean redemption value.
If you're considering this for a family trip, remember that United allows you to pool miles with up to five people through its Family Pooling feature, which can help you piece together enough miles for multiple seats.
How to book
Search for award availability and book directly through United at: https://www.united.com/en/us/book-flight/united-awards/search