Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 2553
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
F9 2553 · DEN → PDX
departs 2:50 PM MT · arrives 4:31 PM PT
Forecast issued Tue 4:00 PM ET · 1h before departure
Watch this flight
Other days
Today
Wed 9/30 39%
Thu 10/1 23%
Fri 10/2 30%
Sat 10/3 28%
Sun 10/4 28%
Mon 10/5 27%
Odds over time
Arrive at PDX more than 15 minutes late?
24%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
24%
Leave 15+ late
26%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at PDX more than 15 minutes late?
Calm-weather odds: 22% · changed +3 pts in 24h
+3 pts
24%
Yes 24%
No 76%
Leave DEN more than 15 minutes late?
Calm-weather odds: 26% · changed +5 pts in 24h
+5 pts
26%
Yes 26%
No 74%
Arrive at PDX more than an hour late?
Calm-weather odds: 6% · changed +2 pts in 24h
+2 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to PDX?
On time or early
76%
15–30 min late
10%
30 min–1 hour late
7%
1–2 hours late
5%
Over 2 hours late
2%
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
↑
2pm departures from DEN are often late
↑
DEN is busy at that time
↓
Mostly benign weather forecast at DEN
↓
Tuesdays in September are usually quieter than average
Weather at each end
DEN (origin)
Gusts 9 kt Ceiling 6,000 ft Visibility 10+ mi Precip none
PDX (destination)
Gusts 16 kt Ceiling 2,700 ft Visibility 7 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.