Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 3377
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Yesterday
F9 3377 · SJU → MIA
departs 7:30 AM AT · arrives 10:15 AM ET
Forecast issued Thu 10:00 PM ET · 14h after departure
Watch this flight
Other days
Thu 10/1
Today 15%
Sat 10/3 17%
Sun 10/4 14%
Mon 10/5 16%
Tue 10/6 10%
Wed 10/7 10%
Odds over time
Arrive at MIA more than 15 minutes late?
23%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
23%
Leave 15+ late
15%
Arrive 1h+ late
9%
Cancelled
4%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at MIA more than 15 minutes late?
Calm-weather odds: 23% · changed +2 pts in 24h
+2 pts
23%
Yes 23%
No 77%
Leave SJU more than 15 minutes late?
Calm-weather odds: 15% · changed +2 pts in 24h
+2 pts
15%
Yes 15%
No 85%
Arrive at MIA more than an hour late?
Calm-weather odds: 9% · changed +2 pts in 24h
+2 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
How late will it get to MIA?
On time or early
74%
15–30 min late
5%
30 min–1 hour late
8%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 26 kt, 0.7 in of rain, thunderstorms forecast at MIA that day
↑
F9's recent on-time record
↑
Other factors
↓
Early flights usually leave on time
↓
7am departures from SJU are usually not late
Weather at each end
SJU (origin)
Gusts 25 kt Ceiling 3,200 ft Visibility 10+ mi Precip 0.08 in
MIA (destination)
Gusts 19 kt Ceiling 2,000 ft Visibility 1.75 mi Precip 1.25 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.