British Airways has started daily service between Chicago and London on the Airbus A380:
Last year, British Airways said it would begin using the A380 on one of two daily flights between Chicago and London. The aircraft seats up to 469 passengers in four cabins, including 14 first-class suites, 97 lie-flat business-class seats and 55 premium economy seats, with the remaining 303 in coach, British Airways said.
It’s only within the past couple of years that O’Hare has had facilities to accommodate the A380, which is 72.5 m long and 24 m high, with a 79.5 m wingspan. O’Hare has had a runway big enough for the A380 since 2013 but lacked gates that fit two-level planes at the time.
There is a non-zero chance, therefore, that I will fly on one of these bad boys before 2018 ends. (It's not a great chance, but it's at least a chance.)