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 1726
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
F9 1726 · PHL → SJU
departs 10:59 PM ET · arrives 2:59 AM AT
Forecast issued Tue 10:00 PM ET · 1h before departure
Watch this flight
Other days
Tue 9/29
Today 64%
Fri 10/2 46%
Sat 10/3 33%
Sun 10/4 39%
Mon 10/5 33%
Tue 10/6 25%
Wed 10/7 26%
Odds over time
Arrive at SJU more than 15 minutes late?
33%
chance · ±1 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
35%
Arrive 1h+ late
16%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.7d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SJU more than 15 minutes late?
Calm-weather odds: 31% · changed +3 pts in 24h
+3 pts
33%
Yes 33%
No 67%
Leave PHL more than 15 minutes late?
Calm-weather odds: 35% · changed +1 pt in 24h
+1 pt
35%
Yes 35%
No 65%
Arrive at SJU more than an hour late?
Calm-weather odds: 14% · changed +2 pts in 24h
+2 pts
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to SJU?
On time or early
67%
15–30 min late
10%
30 min–1 hour late
6%
1–2 hours late
12%
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 38% of the time recently
↑
10pm departures from PHL are often late
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at PHL
Weather at each end
PHL (origin)
Gusts 17 kt Ceiling 1,500 ft Visibility 10+ mi Precip none
SJU (destination)
Gusts 25 kt Ceiling 7,840 ft Visibility 10+ 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.