Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 3339
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Today
F9 3339 · PHL → DEN
departs 8:37 PM ET · arrives 11:04 PM MT
Forecast issued Thu 12:00 AM ET · 21h before departure
Watch this flight
Other days
Today
Fri 10/2 46%
Sun 10/4 33%
Mon 10/5 37%
Odds over time
Arrive at DEN more than 15 minutes late?
50%
chance · ±4 pts
+12 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
50%
Leave 15+ late
45%
Arrive 1h+ late
12%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 34% · changed +12 pts in 24h
+12 pts
50%
Yes 50%
No 50%
Leave PHL more than 15 minutes late?
Calm-weather odds: 37% · changed +10 pts in 24h
+10 pts
45%
Yes 45%
No 55%
Arrive at DEN more than an hour late?
Calm-weather odds: 9% · changed +3 pts in 24h
+3 pts
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to DEN?
On time or early
50%
15–30 min late
12%
30 min–1 hour late
26%
1–2 hours late
5%
Over 2 hours late
7%
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 32% of the time recently
↑
Arrivals into DEN at that hour are often late
↓
Mostly benign weather forecast at PHL
↓
Other factors
Weather at each end
PHL (origin)
Gusts 10 kt Ceiling 6,167 ft Visibility 9 mi Precip none
DEN (destination)
Gusts 23 kt Ceiling 9,000 ft Visibility 10+ mi Precip 0.06 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.