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.
DELTA · FLIGHT DL 2231
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
DL 2231 · ORD → SLC
departs 7:45 AM CT · arrives 10:15 AM MT
Forecast issued Wed 1:00 AM ET · 32h before departure
Watch this flight
Other days
Today 22%
Thu 10/1
Fri 10/2 11%
Sat 10/3 12%
Sun 10/4 13%
Mon 10/5 11%
Tue 10/6 9%
Odds over time
Arrive at SLC more than 15 minutes late?
19%
chance · ±4 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
19%
Leave 15+ late
11%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
19%
Yes 19%
No 81%
Leave ORD more than 15 minutes late?
Calm-weather odds: 8% · changed −1 pt in 24h
−1 pt
11%
Yes 11%
No 89%
Arrive at SLC more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
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
80%
15–30 min late
8%
30 min–1 hour late
6%
1–2 hours late
3%
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
↑
Cloud base down to 600 ft, visibility down to 2 mi, 1.5 in of rain forecast at ORD that day
↑
DL's recent on-time record
↑
This flight has been late 19% of the time recently
↓
Early flights usually leave on time
↓
Thursdays in October are usually quieter than average
Weather at each end
ORD (origin)
Gusts 11 kt Ceiling 600 ft Visibility 2 mi Precip 1.48 in
SLC (destination)
Gusts 12 kt Ceiling none (clear) 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.