Award space has opened up for business class flights from Boston (BOS) to London Heathrow (LHR) on August 17, 2026. At 88,000 United MileagePlus miles with $30 in taxes, this is a notably better rate than the roughly 140,000 miles United typically charges for transatlantic business class on this route.
Availability appears strong at the moment, which is especially useful for families needing to book multiple seats together. August travel to London works well for summer trips before the school year starts, and Heathrow's connections make it easy to continue onward to the rest of Europe.
The low tax figure is worth highlighting. London departures often carry steep carrier surcharges, but originating in Boston keeps your out-of-pocket costs minimal here.
If you're considering this route, don't wait too long. Award availability at saver rates tends to disappear as travel dates get closer, particularly for peak summer travel.
How to book
Search and book directly through United's award search tool: https://www.united.com/en/us/book-flight/united-awards/search