Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

REPUBLIC · FLIGHT YX 4399 SCHEDULED · TYPICAL SCHEDULE

Wednesday, September 30 Today

YX 4399 · BOS → CMH

departs 8:09 AM ET · arrives 10:30 AM ET

Forecast issued Tue 11:00 PM ET · 9h before departure

YX 4399 isn’t flying BOS → CMH today

This listing came from a typical schedule. According to the FAA, YX 4399 flies these legs today:

CMH → JFK · 2:40 PM · landed
CMH → JFK · 2:49 PM · scheduled
JFK → CMH · 12:22 PM · scheduled
CMH → JFK · 2:49 PM · scheduled