Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 1677
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Yesterday
F9 1677 · DSM → DEN
departs 2:19 PM CT · arrives 3:23 PM MT
Forecast issued Wed 10:00 PM ET · 7h after departure
Watch this flight
Other days
Wed 9/30
Today 17%
Fri 10/2 18%
Mon 10/5 20%
Wed 10/7 15%
Odds over time
Arrive at DEN more than 15 minutes late?
33%
chance · ±0 pts
−12 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
24%
Arrive 1h+ late
12%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 33% · changed −12 pts in 24h
−12 pts
33%
Yes 33%
No 67%
Leave DSM more than 15 minutes late?
Calm-weather odds: 24% · changed −10 pts in 24h
−10 pts
24%
Yes 24%
No 76%
Arrive at DEN more than an hour late?
Calm-weather odds: 12% · changed −8 pts in 24h
−8 pts
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: 1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to DEN?
On time or early
66%
15–30 min late
10%
30 min–1 hour late
11%
1–2 hours late
6%
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
↑
Cloud base down to 300 ft, visibility down to 1.75 mi, 1.8 in of rain forecast at DSM that day
↑
Arrivals into DEN at that hour are often late
↑
Mostly benign weather forecast at DEN
↓
Wednesdays in September are usually quieter than average
↓
DSM usually runs smoothly
Weather at each end
DSM (origin)
Gusts 9 kt Ceiling 200 ft Visibility 1.5 mi Precip 1.31 in
DEN (destination)
Gusts 20 kt Ceiling 8,000 ft Visibility 10+ mi Precip 0.03 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.