This transatlantic business class seat from LAX to Heathrow is pricing at 120,000 MileagePlus miles with minimal fees. The travel date is May 3, 2026, which puts you in London during a pleasant time of year with longer days and mild weather.
For context, United typically prices partner business class awards to London in the 140,000-mile range, so this represents a modest but meaningful savings of around 20,000 miles. The $6 tax figure is notably low for a UK-bound flight, as London departures often carry fuel surcharges in the hundreds of dollars.
One important note: there's only 1 seat available at this price. That makes this better suited for a solo traveler than a family trip. If you're flexible on dates, it's worth searching nearby departures to see if additional availability exists.
Before booking, confirm your MileagePlus balance covers the 120,000-mile requirement. United allows you to combine miles with cash if you're slightly short, though the cash rates aren't always favorable.
How to book
Search and book directly through United's award search tool: https://www.united.com/en/us/book-flight/united-awards/search