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

United is offering award seats from Boston to London at 40,000 miles plus just $6 in taxes, which is about a third less than what you'd typically pay for this transatlantic route.

This deal covers economy class flights from Boston (BOS) to London Heathrow (LHR) on July 13, 2026. There's plenty of award availability right now, making this a solid option for families who need to book multiple seats on the same flight.

The pricing here is notably better than average. United typically charges around 60,000 miles for economy awards on this route, so 40,000 miles represents a 33% savings. The $6 tax figure is also unusually low for transatlantic travel, where carrier surcharges often push fees much higher.

July is peak summer travel season for families heading to Europe, which makes finding award space at reduced rates more difficult than usual. If your schedule lines up with this date, it's worth locking in before availability shifts.

One practical note: London Heathrow is well-connected to central London via the Elizabeth Line and Heathrow Express, so arriving there with kids is straightforward compared to some other European gateways.

How to book

Search for award availability and book directly through United at united.com/en/us/book-flight/united-awards/search.