UA 1218 · SEA → DEN

departs 7:03 PM PT · arrives 10:52 PM MT

Forecast issued Thu 11:00 PM ET · 23h before departure

Arrive at DEN more than 15 minutes late?

22% chance · ±1 pts +6 pts · 24h

HOW SURE WE ARE Good. The odds now lean mostly on firmed-up weather forecasts.

How late will it get to DEN?

On time or early
77%
15–30 min late
5%
30 min–1 hour late
9%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
<1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ UA's recent on-time record

↑ 7pm departures from SEA are often late

↑ Later flights pick up delays from earlier in the day

↓ Cloud base down to 200 ft, visibility down to 0.3 mi forecast at DEN that day

↓ This flight has been late 17% of the time recently

Weather at each end

SEA (origin) Gusts5 kt Ceiling2,200 ft Visibility4 mi Precip0.11 in

DEN (destination) Gusts15 kt Ceiling200 ft Visibility0.3 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.

UA 1218 · SEA → DEN

Odds over time

How late will it get to DEN?