If you've been sitting on a stash of United miles and eyeing a summer trip to London, this is a reasonable time to book. Chicago (ORD) to London Heathrow (LHR) is available in economy for 40,000 MileagePlus miles on August 6, 2026. The taxes and fees come in at just $6, which is unusually low for transatlantic travel to the UK.
This redemption runs about 20,000 miles less than the typical 60,000-mile rate you'll often see on this route. Award pricing on United can fluctuate significantly depending on demand, so locking in at the lower saver level is worth considering if your travel dates are flexible enough to match.
Availability appears wide open for now, so families looking to book multiple seats should be able to secure what they need without much trouble. August is peak summer travel season, making this pricing particularly useful for those planning around school schedules.
One practical tip: if you're traveling with kids, try selecting seats immediately after booking. Even on awards with plenty of availability, desirable seat assignments can fill up quickly as the departure date approaches.
How to book
Search for award availability and book directly through United at united.com.