Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 3691
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Today
F9 3691 · IAD → ATL
departs 8:33 PM ET · arrives 10:44 PM ET
Forecast issued Thu 10:00 PM ET · 1h after departure
Watch this flight
Other days
Today
Fri 10/2 41%
Sun 10/4 34%
Tue 10/6 25%
Wed 10/7 26%
Odds over time
Arrive at ATL more than 15 minutes late?
33%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
38%
Arrive 1h+ late
16%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at ATL more than 15 minutes late?
Calm-weather odds: 33% · changed +3 pts in 24h
+3 pts
33%
Yes 33%
No 67%
Leave IAD more than 15 minutes late?
Calm-weather odds: 38% · changed +1 pt in 24h
+1 pt
38%
Yes 38%
No 62%
Arrive at ATL more than an hour late?
Calm-weather odds: 16% · changed +2 pts in 24h
+2 pts
16%
Yes 16%
No 84%
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
67%
15–30 min late
11%
30 min–1 hour late
6%
1–2 hours late
12%
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
↑
F9's recent on-time record
↑
This flight has been late 37% of the time recently
↑
Arrivals into ATL at that hour are often late
↓
Mostly benign weather forecast at IAD
↓
Other factors
Weather at each end
IAD (origin)
Gusts 7 kt Ceiling none (clear) Visibility 8 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.