This is a solid opportunity for families planning a spring trip to the UK. Los Angeles to London Heathrow is showing wide-open award availability in economy for April 13, 2026, at 40,000 MileagePlus miles per person. The taxes and fees come in at just $6, which is unusually low for transatlantic travel to the UK.
For context, United typically prices this route at around 60,000 miles in economy under their dynamic pricing model. At 40,000 miles, you're getting roughly a third off the standard rate—a meaningful discount, especially if you're booking for multiple family members.
Availability appears strong right now, but award space on popular transatlantic routes can tighten as travel dates approach. If your schedule lines up with mid-April, it's worth locking this in sooner rather than later.
Practical tip: If you don't have enough United miles, remember that MileagePlus partners with Chase Ultimate Rewards, which transfer at a 1:1 ratio. This could be a good use of flexible points if you're sitting on a Chase balance.
How to book
Search and book directly through United's award search tool: https://www.united.com/en/us/book-flight/united-awards/search