Schedule: a typical summer Friday (the flights of Jul 31, 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
Friday, October 2 Today
F9 3377 · SJU → MIA
departs 7:30 AM AT · arrives 10:15 AM ET
Forecast issued Fri 9:00 PM ET · 14h after departure
Watch this flight
Other days
Today
Sat 10/3 18%
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?
15%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
15%
Leave 15+ late
13%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.4d
2d
1d
12h
6h
Departs
Lands
Arrive at MIA more than 15 minutes late?
Calm-weather odds: 15% · changed +1 pt in 24h
+1 pt
15%
Yes 15%
No 85%
Leave SJU more than 15 minutes late?
Calm-weather odds: 13% · changed −2 pts in 24h
−2 pts
13%
Yes 13%
No 87%
Arrive at MIA more than an hour late?
Calm-weather odds: 5% · changed −4 pts in 24h
−4 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to MIA?
On time or early
85%
15–30 min late
1%
30 min–1 hour late
8%
1–2 hours late
2%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
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 22 kt Ceiling none (clear) Visibility 10+ mi Precip none
MIA (destination)
Gusts 20 kt Ceiling 1,700 ft Visibility 10+ mi Precip 0.10 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.