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 3937
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
F9 3937 · SJU → BDL
departs 8:45 AM AT · arrives 12:47 PM ET
Forecast issued Fri 10:00 PM ET · 13h after departure
Watch this flight
Other days
Fri 10/2
Today 35%
Mon 10/5 25%
Wed 10/7 36%
Fri 10/9 28%
Odds over time
Arrive at BDL more than 15 minutes late?
23%
chance · ±0 pts
−3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
23%
Leave 15+ late
19%
Arrive 1h+ late
8%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.4d
2d
1d
12h
6h
Departs
Lands
Arrive at BDL more than 15 minutes late?
Calm-weather odds: 24% · changed −3 pts in 24h
−3 pts
23%
Yes 23%
No 77%
Leave SJU more than 15 minutes late?
Calm-weather odds: 19% · changed −3 pts in 24h
−3 pts
19%
Yes 19%
No 81%
Arrive at BDL more than an hour late?
Calm-weather odds: 9% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: 1% · changed −8 pts in 24h
−8 pts
1%
Yes 1%
No 99%
How late will it get to BDL?
On time or early
76%
15–30 min late
9%
30 min–1 hour late
6%
1–2 hours late
4%
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
↑
This flight has been late 26% of the time recently
↑
Other factors
↓
Early flights usually leave on time
↓
8am departures from SJU are usually not late
Weather at each end
SJU (origin)
Gusts 22 kt Ceiling none (clear) Visibility 10+ mi Precip none
BDL (destination)
Gusts 26 kt Ceiling 5,500 ft Visibility 7 mi Precip 0.01 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.