Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 3340
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
F9 3340 · DEN → PHL
departs 11:59 PM MT · arrives 5:39 AM ET
Forecast issued Sun 1:00 PM ET · 13h before departure
Watch this flight
Other days
Today
Mon 10/5 22%
Fri 10/9 25%
Odds over time
Arrive at PHL more than 15 minutes late?
39%
chance · ±0 pts
+6 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
39%
Leave 15+ late
51%
Arrive 1h+ late
19%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.2d
2d
1d
Now
6h
Departs
Lands
Arrive at PHL more than 15 minutes late?
Calm-weather odds: 30% · changed +6 pts in 24h
+6 pts
39%
Yes 39%
No 61%
Leave DEN more than 15 minutes late?
Calm-weather odds: 47% · changed +4 pts in 24h
+4 pts
51%
Yes 51%
No 49%
Arrive at PHL more than an hour late?
Calm-weather odds: 12% · changed +3 pts in 24h
+3 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to PHL?
On time or early
60%
15–30 min late
12%
30 min–1 hour late
8%
1–2 hours late
14%
Over 2 hours late
5%
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 36% of the time recently
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at DEN
↓
DEN usually runs smoothly
Weather at each end
DEN (origin)
Gusts 24 kt Ceiling 7,500 ft Visibility 10+ mi Precip none
PHL (destination)
Gusts 18 kt Ceiling 700 ft Visibility 2 mi Precip 0.21 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.