Schedule: the flights that flew on Thursday, Nov 5, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 1983 SCHEDULED · TYPICAL SCHEDULE
Tomorrow

UA 1983 · ORD → SNA

departs 4:20 PM CT · arrives 7:07 PM PT
Forecast issued Wed 12:00 PM ET · 29h before departure

UA 1983 isn’t flying ORD → SNA on Thu, Nov 12

This listing came from a typical schedule. According to the FAA, UA 1983 flies these legs that day: