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.
FRONTIER · FLIGHT F9 3378
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Yesterday
F9 3378 · MIA → SJU
departs 9:33 PM ET · arrives 12:28 AM AT
Forecast issued Wed 10:00 PM ET · 0h before departure
Watch this flight
Other days
Wed 9/30
Today 35%
Fri 10/2 33%
Sat 10/3 25%
Sun 10/4 23%
Mon 10/5 22%
Tue 10/6 23%
Wed 10/7 24%
Odds over time
Arrive at SJU more than 15 minutes late?
33%
chance · ±1 pts
−9 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
39%
Arrive 1h+ late
14%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 27% · changed −9 pts in 24h
−9 pts
33%
Yes 33%
No 67%
Leave MIA more than 15 minutes late?
Calm-weather odds: 38% · changed −8 pts in 24h
−8 pts
39%
Yes 39%
No 61%
Arrive at SJU more than an hour late?
Calm-weather odds: 13% · changed −1 pt in 24h
−1 pt
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to SJU?
On time or early
66%
15–30 min late
3%
30 min–1 hour late
16%
1–2 hours late
10%
Over 2 hours late
4%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
Mostly benign weather forecast at MIA
↑
Arrivals into SJU at that hour are often late
↓
Wednesdays in September are usually quieter than average
↓
Other factors
Weather at each end
MIA (origin)
Gusts 18 kt Ceiling 2,800 ft Visibility 6 mi Precip 0.16 in
SJU (destination)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip 0.07 in
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.