Schedule: the flights that flew on Monday, Nov 2, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 1669 SCHEDULED · TYPICAL SCHEDULE
Today

DL 1669 · DTW → LGA

departs 12:15 PM ET · arrives 2:03 PM ET
Forecast issued Mon 11:00 AM ET · 1h before departure

DL 1669 isn’t flying DTW → LGA today

This listing came from a typical schedule. According to the FAA, DL 1669 flies these legs today: