United MileagePlus: Economy to London for 40,000 Miles (July 2026)

United is offering economy award seats from Chicago to London for 40,000 miles plus just $6 in taxes—about 33% below what you'd typically pay for this route.

This is a solid opportunity for families planning a summer trip to London. Award space from Chicago O'Hare (ORD) to London Heathrow (LHR) is currently showing plenty of availability on July 8, 2026, at the saver-level rate of 40,000 miles each way. The taxes and fees come in at just $6, which is notably low for transatlantic travel.

For context, economy awards on this route typically price at around 60,000 miles through United MileagePlus. That makes this deal roughly 20,000 miles cheaper per person—a meaningful savings if you're booking for a family of four.

One practical note: July is peak travel season, so if this date works for your schedule, it's worth booking sooner rather than later. Award availability at saver rates tends to disappear as summer approaches, and United's dynamic pricing means rates can shift without notice.

How to book

Search and book directly through United's award search tool: https://www.united.com/en/us/book-flight/united-awards/search