Schedule: the flights that flew on Thursday, Oct 22, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1238
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 29
DL 1238 · PDX → SLC
departs 7:20 PM PT · arrives 10:13 PM MT
Forecast issued Thu 11:00 PM ET · 1h after departure
Watch this flight
Other days
Thu 10/29
Sun 11/1 27%
Mon 11/2 15%
Odds over time
Arrive at SLC more than 15 minutes late?
12%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
12%
Leave 15+ late
17%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.9d
2d
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 12% · changed +1 pt in 24h
+1 pt
12%
Yes 12%
No 88%
Leave PDX more than 15 minutes late?
Calm-weather odds: 18% · changed +3 pts in 24h
+3 pts
17%
Yes 17%
No 83%
Arrive at SLC 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 SLC?
On time or early
88%
15–30 min late
4%
30 min–1 hour late
2%
1–2 hours late
4%
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
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into SLC at that hour are often late
↑
PDX is busy at that time
↓
This flight has been late 11% of the time recently
↓
Mostly benign weather forecast at SLC
Weather at each end
PDX (origin)
Gusts 10 kt Ceiling 1,500 ft Visibility 2.5 mi Precip 0.36 in
SLC (destination)
Gusts 7 kt Ceiling 9,000 ft Visibility 4 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.