Schedule: the flights that flew on Wednesday, Oct 21, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1840
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 28 Tomorrow
DL 1840 · ORD → SLC
departs 7:22 PM CT · arrives 9:44 PM MT
Forecast issued Tue 5:00 AM ET · 39h before departure
Watch this flight
Other days
Today 22%
Wed 10/28
Thu 10/29 37%
Fri 10/30 37%
Sun 11/1 40%
Mon 11/2 30%
Odds over time
Arrive at SLC more than 15 minutes late?
24%
chance · ±7 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
24%
Leave 15+ late
20%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 20% · changed +2 pts in 24h
+2 pts
24%
Yes 24%
No 76%
Leave ORD more than 15 minutes late?
Calm-weather odds: 19% · changed +1 pt in 24h
+1 pt
20%
Yes 20%
No 80%
Arrive at SLC more than an hour late?
Calm-weather odds: 4% · changed −1 pt in 24h
−1 pt
5%
Yes 5%
No 95%
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
75%
15–30 min late
12%
30 min–1 hour late
7%
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
↑
7pm departures from ORD are often late
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 27% of the time recently
↓
Wednesdays in October are usually quieter than average
↓
Mostly benign weather forecast at ORD
Weather at each end
ORD (origin)
Gusts 16 kt Ceiling 9,000 ft Visibility 10+ mi Precip none
SLC (destination)
Gusts 10 kt Ceiling 9,000 ft Visibility 10+ 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.