Tracked live by the FAA. The scheduled times shown are from a typical Tuesday because the FAA's flight plan was first seen after takeoff.

FRONTIER · FLIGHT F9 3378 LANDED 1:48 AM AT, ~85 MIN LATE

Tuesday, September 29 Yesterday

F9 3378 · MIA → SJU

took off 11:38 PM ET · landed 1:48 AM AT (scheduled 9:33 PM ET → 12:28 AM AT)

Forecast issued Tue 10:00 PM ET · 0h before departure

F9 3378 isn’t flying MIA → SJU on Tue, Sep 29

This listing came from a typical schedule. According to the FAA, F9 3378 flies these legs that day: