Schedule: a typical summer Thursday (the flights of Jul 30, 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
Thursday, October 1 Yesterday
F9 2551 · PHL → ATL
departs 6:30 AM ET · arrives 9:05 AM ET
Forecast issued Thu 10:00 PM ET · 16h after departure
Watch this flight
Other days
Thu 10/1
Today 20%
Sat 10/3 18%
Sun 10/4 30%
Mon 10/5 25%
Odds over time
Arrive at ATL more than 15 minutes late?
33%
chance · ±0 pts
−2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
19%
Arrive 1h+ late
10%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 33% · changed −2 pts in 24h
−2 pts
33%
Yes 33%
No 67%
Leave PHL more than 15 minutes late?
Calm-weather odds: 19% · changed −11 pts in 24h
−11 pts
19%
Yes 19%
No 81%
Arrive at ATL more than an hour late?
Calm-weather odds: 10% · changed −4 pts in 24h
−4 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
<1%
Yes <1%
No 99%
How late will it get to ATL?
On time or early
67%
15–30 min late
11%
30 min–1 hour late
11%
1–2 hours late
7%
Over 2 hours late
3%
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 busy at that time
↓
Mostly benign weather forecast at ATL
↓
Early flights usually leave on time
Weather at each end
PHL (origin)
Gusts 8 kt Ceiling 900 ft Visibility 10+ mi Precip none
ATL (destination)
Gusts 10 kt Ceiling 200 ft Visibility 0.5 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.