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 734 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1

DL 734 · DTW → SEA

departs 8:35 AM ET · arrives 10:34 AM PT

Forecast issued Tue 8:00 PM ET · 37h before departure

Arrive at SEA more than 15 minutes late?

15% chance · ±2 pts +0 pts · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to SEA?

On time or early
84%
15–30 min late
7%
30 min–1 hour late
5%
1–2 hours late
<1%
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

↑ Arrivals into SEA at that hour are often late

↑ This flight has been late 24% of the time recently

↑ SEA is prone to delays

↓ DTW usually runs smoothly

↓ Mostly benign weather forecast at SEA

Weather at each end

DTW (origin) Gusts15 kt Ceiling4,333 ft Visibility7 mi Precip0.14 in

SEA (destination) Gusts7 kt Ceiling3,400 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 734 · DTW → SEA

Odds over time

How late will it get to SEA?