Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 485 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1 Yesterday

DL 485 · KOA → SEA

departs 9:55 PM HT · arrives 6:45 AM PT

Forecast issued Thu 10:00 PM ET · 6h before departure

Arrive at SEA more than 15 minutes late?

35% chance · ±0 pts +24 pts · 24h

HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.

How late will it get to SEA?

On time or early
62%
15–30 min late
28%
30 min–1 hour late
0%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
5%

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

↑ SEA is prone to delays

↓ This flight has been late 8% of the time recently

↓ 9pm departures from KOA are usually not late

Weather at each end

KOA (origin) Gusts12 kt Ceiling1,700 ft Visibility10+ mi Precipnone

SEA (destination) Gusts9 kt Ceiling5,500 ft Visibility10+ mi Precipnone

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.

DL 485 · KOA → SEA

Odds over time

How late will it get to SEA?