Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 645 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 4 Today

UA 645 · TPA → DEN

departs 12:38 PM ET · arrives 2:36 PM MT

Forecast issued Sun 7:00 AM ET · 6h before departure

UA 645 isn’t flying TPA → DEN today

This listing came from a typical schedule. According to the FAA, UA 645 flies these legs today:

DEN → FSD · 6:23 PM · scheduled
DEN → FSD · 6:28 PM · landed
DEN → FSD · 5:44 PM · scheduled
DEN → FSD · 6:03 PM · scheduled