Schedule: a typical summer Tuesday (the flights of Jul 28, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 2551
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
F9 2551 · PHL → ATL
departs 6:30 AM ET · arrives 9:05 AM ET
Forecast issued Tue 10:00 PM ET · 16h after departure
Watch this flight
Other days
Tue 9/29
Today 28%
Mon 10/5 28%
Fri 10/9 18%
Odds over time
Arrive at ATL more than 15 minutes late?
21%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
21%
Leave 15+ late
16%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 21% · changed +2 pts in 24h
+2 pts
21%
Yes 21%
No 79%
Leave PHL more than 15 minutes late?
Calm-weather odds: 16% · changed +2 pts in 24h
+2 pts
16%
Yes 16%
No 84%
Arrive at ATL more than an hour late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to ATL?
On time or early
78%
15–30 min late
7%
30 min–1 hour late
5%
1–2 hours late
6%
Over 2 hours late
2%
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 28% of the time recently
↑
PHL is prone to delays
↓
Mostly benign weather forecast at ATL
↓
Early flights usually leave on time
Weather at each end
PHL (origin)
Gusts 17 kt Ceiling 1,500 ft Visibility 10+ mi Precip none
ATL (destination)
Gusts 9 kt Ceiling none (clear) 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.