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.

FRONTIER · FLIGHT F9 3131 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Today

F9 3131 · IAH → ONT

departs 6:10 AM CT · arrives 7:32 AM PT

Forecast issued Fri 2:00 PM ET · 7h after departure

F9 3131 isn’t flying IAH → ONT today

This listing came from a typical schedule. According to the FAA, F9 3131 flies these legs today:

IAH → ONT · 4:26 PM · scheduled