Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 1678 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Yesterday

UA 1678 · SFO → DCA

departs 8:20 AM PT · arrives 4:47 PM ET

Forecast issued Fri 10:00 PM ET · 11h after departure

UA 1678 isn’t flying SFO → DCA on Fri, Oct 2

This listing came from a typical schedule. According to the FAA, UA 1678 flies these legs that day:

DCA → IAH · 7:38 PM · scheduled
DCA → IAH · 8:00 PM · landed