This is a solid option for families planning a spring trip to London. At 44,000 miles each way, you're saving around 16,000 miles per ticket compared to the typical 60,000-mile rate for this route. For a family of four, that's 64,000 miles back in your pocket.
Availability looks strong for April 15, 2026, with plenty of seats showing across multiple flights. The low $9 tax figure is notable too—transatlantic awards often come with much higher carrier surcharges, so this keeps your out-of-pocket costs minimal.
United MileagePlus miles are relatively easy to earn through Chase Ultimate Rewards transfers, making this accessible even if your balance is currently short. Transfer ratios are 1:1 and typically process instantly.
Practical tip: If you're booking for a family, search for your full party size at once. Award availability can be limited to just a few seats per flight, and searching individually might show space that disappears when you try to book four together.
How to book
Search and book directly through United's award search tool: https://www.united.com/en/us/book-flight/united-awards/search