Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

REPUBLIC · FLIGHT YX 4390 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1 Tomorrow

YX 4390 · BOS → JFK

departs 5:46 PM ET · arrives 7:29 PM ET

Forecast issued Wed 10:00 AM ET · 32h before departure

YX 4390 isn’t flying BOS → JFK on Thu, Oct 1

This listing came from a typical schedule. According to the FAA, YX 4390 flies these legs that day:

GSP → LGA · 10:40 AM · scheduled