Schedule: the flights that flew on Sunday, Nov 8, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 387 SCHEDULED · TYPICAL SCHEDULE
Tomorrow

UA 387 · SFO → PDX

departs 8:55 PM PT · arrives 10:50 PM PT
Forecast issued Sat 10:00 PM ET · 26h before departure

UA 387 isn’t flying SFO → PDX on Sun, Nov 15

This listing came from a typical schedule. According to the FAA, UA 387 flies these legs that day: