Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 4545
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Today
F9 4545 · DEN → SEA
departs 7:13 AM MT · arrives 9:17 AM PT
Forecast issued Sat 6:00 PM ET · 9h after departure
Watch this flight
Other days
Today
Sun 10/4 25%
Mon 10/5 25%
Fri 10/9 19%
Odds over time
Arrive at SEA more than 15 minutes late?
35%
chance · ±0 pts
+16 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
35%
Leave 15+ late
25%
Arrive 1h+ late
8%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.5d
2d
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 35% · changed +16 pts in 24h
+16 pts
35%
Yes 35%
No 65%
Leave DEN more than 15 minutes late?
Calm-weather odds: 25% · changed +7 pts in 24h
+7 pts
25%
Yes 25%
No 75%
Arrive at SEA more than an hour late?
Calm-weather odds: 8% · changed +3 pts in 24h
+3 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
64%
15–30 min late
22%
30 min–1 hour late
5%
1–2 hours late
6%
Over 2 hours late
1%
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
↑
SEA is prone to delays
↑
DEN is busy at that time
↓
Gusts to 27 kt forecast at DEN that day
↓
Early flights usually leave on time
Weather at each end
DEN (origin)
Gusts 27 kt Ceiling none (clear) Visibility 10+ mi Precip none
SEA (destination)
Gusts 9 kt Ceiling 100 ft Visibility 2.5 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.