If you've been sitting on a modest United MileagePlus balance and eyeing a spring trip to London, this is a solid opportunity. Award seats from Boston (BOS) to London Heathrow (LHR) are pricing at 36,800 miles in economy, with minimal taxes and fees of just $6.
This rate compares favorably to the typical 60,000 miles United usually charges for transatlantic economy awards. At nearly 40% off standard pricing, it's a reasonable use of miles for families looking to stretch their points further. Availability appears strong for April 12, 2026, so you have some flexibility when planning.
One practical note for families: London Heathrow is well-connected to central London via the Elizabeth Line and Heathrow Express, making it an easy arrival point even with kids and luggage in tow. April also tends to offer milder weather and smaller crowds than peak summer months.
How to book
Search for award availability and book directly through United at united.com/en/us/book-flight/united-awards/search.