Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 4427
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
F9 4427 · BWI → ATL
departs 8:36 AM ET · arrives 10:47 AM ET
Forecast issued Fri 10:00 AM ET · 23h before departure
Watch this flight
Other days
Today 22%
Sat 10/3
Sun 10/4 33%
Mon 10/5 25%
Tue 10/6 19%
Wed 10/7 21%
Thu 10/8 19%
Odds over time
Arrive at ATL more than 15 minutes late?
23%
chance · ±2 pts
+0 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
23%
Leave 15+ late
18%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.4d
2d
Now
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 24% · changed +0 pts in 24h
+0 pts
23%
Yes 23%
No 77%
Leave BWI more than 15 minutes late?
Calm-weather odds: 21% · changed +0 pts in 24h
+0 pts
18%
Yes 18%
No 82%
Arrive at ATL more than an hour late?
Calm-weather odds: 8% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
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
76%
15–30 min late
10%
30 min–1 hour late
4%
1–2 hours late
5%
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 23% of the time recently
↑
BWI is prone to delays
↓
8am departures from BWI are usually not late
↓
Early flights usually leave on time
Weather at each end
BWI (origin)
Gusts 15 kt Ceiling 3,500 ft Visibility 9 mi Precip 0.03 in
ATL (destination)
Gusts 8 kt Ceiling 800 ft Visibility 8 mi Precip 0.12 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.