Award space has opened up on the Chicago to London route for spring 2026 travel. At 40,000 miles one-way, this represents solid value for families looking to visit the UK without burning through their miles balances. The minimal $6 tax burden is also notable, as transatlantic awards can sometimes come with hefty surcharges.
For context, United typically prices this route at around 60,000 miles in economy. That makes this availability roughly 33% cheaper than the standard rate. If you've been saving MileagePlus miles for a family trip to London, this is a reasonable time to put them to use.
Availability appears strong for April 14, 2026, with plenty of seats showing across searches. That said, award space can shift without notice, so if this fits your travel plans, it's worth booking sooner rather than later. United allows free cancellation on award tickets up to 30 days before departure for members, giving you some flexibility if plans change.
One practical tip: if you're traveling as a family, search for the full number of passengers you need at once. Award inventory can be limited, and what shows as available for two travelers may not be there for four.
How to book
Search and book directly through United's award search tool: https://www.united.com/en/us/book-flight/united-awards/search