Schedule: the flights that flew on Sunday, Oct 25, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 797 SCHEDULED · TYPICAL SCHEDULE

Sunday, November 1

DL 797 · BOS → SEA

departs 7:30 PM ET · arrives 10:26 PM PT

Forecast issued Fri 2:00 PM ET · 54h before departure

Arrive at SEA more than 15 minutes late?

24% chance · ±4 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
76%
15–30 min late
3%
30 min–1 hour late
15%
1–2 hours late
4%
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

↑ 7pm departures from BOS are often late

↑ Later flights pick up delays from earlier in the day

↑ This flight has been late 28% of the time recently

↓ Mostly benign weather forecast at BOS

↓ Mostly benign weather forecast at SEA

Weather at each end

BOS (origin) Gusts11 kt Ceilingnone (clear) Visibility10+ mi Precipnone

SEA (destination) Gusts5 kt Ceiling1,800 ft Visibility8 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 797 · BOS → SEA

Odds over time

How late will it get to SEA?