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.
DELTA · FLIGHT DL 2998
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Yesterday
DL 2998 · SLC → SEA
departs 10:45 PM MT · arrives 11:59 PM PT
Forecast issued Tue 10:00 PM ET · 3h before departure
Watch this flight
Other days
Tue 9/29
Today 19%
Thu 10/1 19%
Fri 10/2 18%
Sun 10/4 28%
Mon 10/5 19%
Tue 10/6 14%
Odds over time
Arrive at SEA more than 15 minutes late?
25%
chance · ±2 pts
+3 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
25%
Leave 15+ late
25%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 23% · changed +3 pts in 24h
+3 pts
25%
Yes 25%
No 75%
Leave SLC 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: 5% · changed +1 pt in 24h
+1 pt
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 SEA?
On time or early
74%
15–30 min late
13%
30 min–1 hour late
6%
1–2 hours late
5%
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
↑
Arrivals into SEA at that hour are often late
↑
Cloud base down to 500 ft forecast at SEA that day
↑
Later flights pick up delays from earlier in the day
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at SLC
Weather at each end
SLC (origin)
Gusts 15 kt Ceiling 6,500 ft Visibility 10+ mi Precip none
SEA (destination)
Gusts 24 kt Ceiling 500 ft Visibility 3 mi Precip 0.04 in
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.