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 1874 SCHEDULED · TYPICAL SCHEDULE
Today

DL 1874 · ATL → IAH

departs 1:47 PM ET · arrives 2:56 PM CT
Forecast issued Mon 6:00 PM ET · 4h after departure

DL 1874 isn’t flying ATL → IAH today

This listing came from a typical schedule. According to the FAA, DL 1874 flies these legs today: