Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 1866 SCHEDULED · TYPICAL SCHEDULE

Saturday, October 3 Today

UA 1866 · GSP → DEN

departs 4:15 PM ET · arrives 5:55 PM MT

Forecast issued Sat 1:00 AM ET · 15h before departure

UA 1866 isn’t flying GSP → DEN today

This listing came from a typical schedule. According to the FAA, UA 1866 flies these legs today:

SFO → DFW · 12:10 AM · in the air
SFO → DFW · 12:22 AM · scheduled