This transatlantic Premium Economy award from Chicago O'Hare to London Heathrow is pricing at 50,000 United MileagePlus miles with minimal taxes. There's plenty of availability showing for May 2, 2026, making this a good option for families planning a late-spring trip to the UK.
The typical rate for Premium Economy on this route runs around 80,000 miles, so you're saving roughly 30,000 miles per ticket here. For a family of four, that's 120,000 miles back in your account—enough for another domestic round-trip or a head start on your next international award.
Premium Economy on United's long-haul flights gives you a wider seat, extra legroom, and improved meal service compared to standard economy. It's a meaningful upgrade for an overnight flight, especially if you're traveling with kids who need a bit more space to sleep.
One practical note: London Heathrow works well for families since it has excellent public transit connections into central London via the Elizabeth Line or Heathrow Express. Budget about an hour to reach most tourist areas.
How to book
Search for award availability and book directly at: united.com/en/us/book-flight/united-awards/search