Schedule: the flights that flew on Wednesday, Oct 21, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
Today
UA 1651 · BUF → ORD
departs 10:44 AM ET · arrives 11:39 AM CT
UA 1651 isn’t flying BUF → ORD today
This listing came from a typical schedule. According to the FAA, UA 1651 flies these legs today: