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.

UNITED · FLIGHT UA 423 SCHEDULED · TYPICAL SCHEDULE

Wednesday, October 28 Tomorrow

UA 423 · ATH → ORD

departs 12:36 PM EET · arrives 4:44 PM CT

Forecast issued Tue 5:00 AM ET · 26h before departure

UA 423 isn’t flying ATH → ORD on Wed, Oct 28

This listing came from a typical schedule. According to the FAA, UA 423 flies these legs that day:

PHL → IAH · 12:50 PM · scheduled