Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 3345
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30
F9 3345 · SJU → ORD
departs 7:14 PM AT · arrives 11:27 PM CT
Forecast issued Wed 10:00 PM ET · 3h after departure
Watch this flight
Other days
Wed 9/30
Today 60%
Mon 10/5 33%
Fri 10/9 34%
Odds over time
Arrive at ORD more than 15 minutes late?
33%
chance · ±1 pts
−4 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
34%
Arrive 1h+ late
19%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.7d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 35% · changed −4 pts in 24h
−4 pts
33%
Yes 33%
No 67%
Leave SJU more than 15 minutes late?
Calm-weather odds: 34% · changed −2 pts in 24h
−2 pts
34%
Yes 34%
No 66%
Arrive at ORD more than an hour late?
Calm-weather odds: 19% · changed +6 pts in 24h
+6 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to ORD?
On time or early
66%
15–30 min late
7%
30 min–1 hour late
7%
1–2 hours late
14%
Over 2 hours late
5%
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
↑
Cloud base down to 500 ft, visibility down to 1.75 mi, 0.9 in of rain forecast at ORD that day
↑
Arrivals into ORD at that hour are often late
↓
Wednesdays in September are usually quieter than average
↓
Other factors
Weather at each end
SJU (origin)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip 0.07 in
ORD (destination)
Gusts 19 kt Ceiling 500 ft Visibility 1.75 mi Precip 0.95 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.