If you've been holding onto a stash of United miles and eyeing a family trip to London next summer, this is a solid redemption. Award space from Boston (BOS) to London Heathrow (LHR) is available on August 3, 2026, at 40,000 MileagePlus miles per person in economy. The taxes and fees come in at just $6, which is remarkably low for a transatlantic ticket to the UK.
This rate sits well below the typical cost for this route. United usually prices economy awards to London in the range of 60,000 miles, so you're saving about 20,000 miles per ticket here. For a family of four, that's 80,000 miles back in your pocket—enough for another domestic trip or a nice hotel night.
Availability appears to be wide open right now, but August is peak travel season for families, and these saver-level rates tend to disappear as schedules fill up. If your dates are flexible, it's still worth checking nearby dates to see if the same pricing holds.
One practical tip: if you're booking for multiple passengers, search for the full party size at once. United's system will only show availability if enough seats exist for everyone, which saves you the frustration of finding a deal that works for only part of your group.
How to book
Search and book directly through United's award search tool at united.com.