Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 2399
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
F9 2399 · ATL → IAH
departs 8:45 AM ET · arrives 10:03 AM CT
Forecast issued Thu 11:00 AM ET · 46h before departure
Watch this flight
Other days
Today 34%
Fri 10/2 30%
Sat 10/3
Sun 10/4 25%
Mon 10/5 28%
Tue 10/6 19%
Wed 10/7 17%
Odds over time
Arrive at IAH more than 15 minutes late?
39%
chance · ±3 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
39%
Leave 15+ late
22%
Arrive 1h+ late
13%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.4d
Now
1d
12h
6h
Departs
Lands
Arrive at IAH more than 15 minutes late?
Calm-weather odds: 20% · changed +2 pts in 24h
+2 pts
39%
Yes 39%
No 61%
Leave ATL more than 15 minutes late?
Calm-weather odds: 20% · changed +0 pts in 24h
+0 pts
22%
Yes 22%
No 78%
Arrive at IAH more than an hour late?
Calm-weather odds: 8% · changed +3 pts in 24h
+3 pts
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to IAH?
On time or early
60%
15–30 min late
17%
30 min–1 hour late
9%
1–2 hours late
7%
Over 2 hours late
6%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
0.8 in of rain forecast at IAH that day
↑
F9's recent on-time record
↑
IAH is prone to delays
↓
Early flights usually leave on time
Weather at each end
ATL (origin)
Gusts 7 kt Ceiling 4,200 ft Visibility 5 mi Precip 0.17 in
IAH (destination)
Gusts 13 kt Ceiling 1,833 ft Visibility 10+ mi Precip 0.78 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.