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

United is offering award seats from Chicago to London in economy for 40,000 miles plus just $6 in taxes—about a third less than the typical 60,000-mile rate for this route.

If you've been sitting on a United MileagePlus balance and waiting for a good time to book a family trip to London, this is a solid opportunity. Economy awards from Chicago O'Hare (ORD) to London Heathrow (LHR) are pricing at 40,000 miles with minimal taxes—just $6 per ticket.

For context, this route typically runs around 60,000 miles in economy through United's dynamic pricing. At 40,000 miles, you're looking at a 33% discount, which adds up quickly when booking for multiple travelers. Availability appears strong for April 1, 2026, so families should have a reasonable shot at securing seats together.

One practical note: United's award pricing fluctuates frequently, so if this rate works for your plans, it's worth booking sooner rather than later. You can always cancel a United award ticket and redeposit the miles if your plans change, though redeposit fees may apply depending on your MileagePlus status.

How to book

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