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 1503 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 4 Today

UA 1503 · SEA → ORD

departs 5:15 PM PT · arrives 11:22 PM CT

Forecast issued Sun 7:00 PM ET · 1h before departure

UA 1503 isn’t flying SEA → ORD today

This listing came from a typical schedule. According to the FAA, UA 1503 flies these legs today:

DTW → ORD · 8:50 AM · scheduled
DTW → ORD · 9:24 AM · landed
DTW → ORD · 9:11 AM · scheduled