Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
F9 3378 · Miami (MIA) → San Juan (SJU)
Sold by Frontier. Still flying: 55 of the last 56 days (Daily).
Arrives on time71%within 15 minutes, of 154 flights
Cancelled1.3%of scheduled flights
An hour or more late12%of flights that operated
When late, on average65 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves MIA
- 21:33
- Arrives SJU
- 00:28
- Flight time
- 2h 46m
- Days flown, last 8 weeks
- 55 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at MIA
All flights leaving Miami (MIA) at 9–10 pm, wherever they’re going: 69% left within 15 minutes and 1.8% were cancelled (9,786 flights in the year). Other Frontier flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.