Originally Posted by spaaks

I don't think they're going to be using these airframes on ORD-GRR. They're going to use them on business heavy markets where people (companies) actually pay up for a premium seat. Don't forget, it's not just the CRJ550. United is making a system wide push to add more premium seats. They're reducing seat counts/increasing premium seating on767-300's and ALL 319/320's

https://thepointsguy.com/news/united-crj550/

So far, the airline only confirmed that it’ll fly between Chicago (ORD) and Walmart’s headquarters in Bentonville, Arkansas (XNA). United is apparently losing out on business from Walmart employees and suppliers looking to fly in premium cabins — with more first-class seats on the way, XNA flyers will have an easier time booking premium-cabin United travel between Arkansas and Asia.