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 2509
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
F9 2509 · BWI → ATL
departs 9:37 PM ET · arrives 11:49 PM ET
Forecast issued Tue 7:00 PM ET · 3h before departure
Watch this flight
Other days
Today
Wed 9/30 28%
Thu 10/1 30%
Fri 10/2 36%
Sat 10/3 34%
Mon 10/5 28%
Odds over time
Arrive at ATL more than 15 minutes late?
30%
chance · ±2 pts
+8 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
30%
Leave 15+ late
35%
Arrive 1h+ late
11%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 35% · changed +8 pts in 24h
+8 pts
30%
Yes 30%
No 70%
Leave BWI more than 15 minutes late?
Calm-weather odds: 36% · changed +9 pts in 24h
+9 pts
35%
Yes 35%
No 65%
Arrive at ATL more than an hour late?
Calm-weather odds: 13% · changed +2 pts in 24h
+2 pts
11%
Yes 11%
No 89%
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
69%
15–30 min late
11%
30 min–1 hour late
8%
1–2 hours late
7%
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
↑
This flight has been late 45% of the time recently
↑
F9's recent on-time record
↑
9pm departures from BWI are often late
↓
Mostly benign weather forecast at ATL
↓
Tuesdays in September are usually quieter than average
Weather at each end
BWI (origin)
Gusts 7 kt Ceiling 3,600 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.