Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 3345
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
F9 3345 · SJU → ORD
departs 7:14 PM AT · arrives 11:27 PM CT
Forecast issued Tue 10:00 PM ET · 3h after departure
Watch this flight
Other days
Tue 9/29
Today 49%
Fri 10/2 36%
Sat 10/3 35%
Sun 10/4 39%
Mon 10/5 34%
Tue 10/6 29%
Wed 10/7 29%
Odds over time
Arrive at ORD more than 15 minutes late?
30%
chance · ±1 pts
+5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
30%
Leave 15+ late
31%
Arrive 1h+ late
10%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.7d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 26% · changed +5 pts in 24h
+5 pts
30%
Yes 30%
No 70%
Leave SJU more than 15 minutes late?
Calm-weather odds: 26% · changed +4 pts in 24h
+4 pts
31%
Yes 31%
No 69%
Arrive at ORD more than an hour late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to ORD?
On time or early
70%
15–30 min late
8%
30 min–1 hour late
12%
1–2 hours late
5%
Over 2 hours late
4%
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
↑
Arrivals into ORD at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
Tuesdays in September are usually quieter than average
↓
Other factors
Weather at each end
SJU (origin)
Gusts 25 kt Ceiling 7,840 ft Visibility 10+ mi Precip none
ORD (destination)
Gusts 16 kt Ceiling 100 ft Visibility 0.5 mi Precip none
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.