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 4209
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
F9 4209 · CLE → ATL
departs 5:51 PM ET · arrives 8:06 PM ET
Forecast issued Sun 7:00 AM ET · 11h before departure
Watch this flight
Odds over time
Arrive at ATL more than 15 minutes late?
54%
chance · ±0 pts
+7 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
54%
Leave 15+ late
48%
Arrive 1h+ late
19%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
5.8d
2d
1d
Now
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 39% · changed +7 pts in 24h
+7 pts
54%
Yes 54%
No 46%
Leave CLE more than 15 minutes late?
Calm-weather odds: 37% · changed +9 pts in 24h
+9 pts
48%
Yes 48%
No 52%
Arrive at ATL more than an hour late?
Calm-weather odds: 14% · changed +4 pts in 24h
+4 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to ATL?
On time or early
45%
15–30 min late
18%
30 min–1 hour late
16%
1–2 hours late
13%
Over 2 hours late
5%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
Cloud base down to 400 ft, visibility down to 2 mi, 0.5 in of rain forecast at ATL that day
↑
Arrivals into ATL at that hour are often late
↓
Mostly benign weather forecast at CLE
↓
Other factors
Weather at each end
CLE (origin)
Gusts 13 kt Ceiling none (clear) Visibility 10+ mi Precip none
ATL (destination)
Gusts 9 kt Ceiling 400 ft Visibility 3 mi Precip 0.51 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.