Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 1678
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
F9 1678 · DEN → DSM
departs 10:46 AM MT · arrives 1:34 PM CT
Forecast issued Fri 4:00 AM ET · 9h before departure
Watch this flight
Other days
Today
Mon 10/5 22%
Wed 10/7 17%
Thu 10/8 10%
Odds over time
Arrive at DSM more than 15 minutes late?
28%
chance · ±0 pts
+7 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
22%
Arrive 1h+ late
6%
Cancelled
7%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.6d
2d
1d
12h
Now
6h
Departs
Lands
Arrive at DSM more than 15 minutes late?
Calm-weather odds: 19% · changed +7 pts in 24h
+7 pts
28%
Yes 28%
No 72%
Leave DEN more than 15 minutes late?
Calm-weather odds: 18% · changed +2 pts in 24h
+2 pts
22%
Yes 22%
No 78%
Arrive at DSM more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +6 pts in 24h
+6 pts
7%
Yes 7%
No 93%
How late will it get to DSM?
On time or early
67%
15–30 min late
15%
30 min–1 hour late
5%
1–2 hours late
4%
Over 2 hours late
1%
Cancelled
7%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
Other factors
↑
10am departures from DEN are often late
↓
Gusts to 28 kt forecast at DEN that day
↓
Early flights usually leave on time
Weather at each end
DEN (origin)
Gusts 29 kt Ceiling none (clear) Visibility 10+ mi Precip none
DSM (destination)
Gusts 10 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.