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 3540
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
F9 3540 · LAS → DEN
departs 2:53 PM PT · arrives 6:00 PM MT
Forecast issued Wed 2:00 AM ET · 40h before departure
Watch this flight
Other days
Today 68%
Thu 10/1
Fri 10/2 42%
Sat 10/3 31%
Sun 10/4 39%
Mon 10/5 43%
Tue 10/6 28%
Odds over time
Arrive at DEN more than 15 minutes late?
49%
chance · ±5 pts
−7 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
49%
Leave 15+ late
32%
Arrive 1h+ late
14%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 33% · changed −7 pts in 24h
−7 pts
49%
Yes 49%
No 51%
Leave LAS more than 15 minutes late?
Calm-weather odds: 22% · changed −1 pt in 24h
−1 pt
32%
Yes 32%
No 68%
Arrive at DEN more than an hour late?
Calm-weather odds: 9% · changed −2 pts in 24h
−2 pts
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DEN?
On time or early
50%
15–30 min late
16%
30 min–1 hour late
19%
1–2 hours late
9%
Over 2 hours late
5%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into DEN at that hour are often late
↑
F9's recent on-time record
↑
2pm departures from LAS are often late
↓
Mostly benign weather forecast at LAS
↓
Thursdays in October are usually quieter than average
Weather at each end
LAS (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
DEN (destination)
Gusts 20 kt Ceiling 8,000 ft Visibility 7 mi Precip 0.16 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.