If you've been planning a family trip to London for summer 2026, this is a straightforward opportunity worth considering. Economy awards from Boston (BOS) to London Heathrow (LHR) are pricing at 40,000 United MileagePlus miles, with minimal fees of just $6. Availability on July 6, 2026 looks wide open.
This rate compares favorably to the typical 60,000 miles United usually charges for transatlantic economy awards on this route. That 33% discount means you're keeping 20,000 miles in your account for future trips.
The low tax amount is notable here. Unlike many European award tickets that tack on hundreds in carrier surcharges, this routing keeps out-of-pocket costs minimal, making it a good fit for families booking multiple seats.
One practical tip: if you're traveling with kids, check seat assignments immediately after booking. Award seats sometimes have limited advance selection, and you'll want to secure seats together before the cabin fills up with revenue passengers.
How to book
Search and book directly through United's award search tool at https://www.united.com/en/us/book-flight/united-awards/search. Enter Boston as your origin, London Heathrow as your destination, and search for July 6, 2026.