Schedule: the flights that flew on Sunday, Oct 4, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 3819 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 11 Today

UA 3819 · STN → IAD

departs 7:17 PM BST · arrives 11:22 PM ET

Forecast issued Sun 7:00 AM ET · 7h before departure

Arrive at IAD more than 15 minutes late?

23% chance · ±0 pts +0 pts · 24h

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

How late will it get to IAD?

On time or early
74%
15–30 min late
3%
30 min–1 hour late
12%
1–2 hours late
4%
Over 2 hours late
3%
Cancelled
3%

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

What’s moving the odds

↑ Cloud base down to 200 ft, visibility down to 0.5 mi, 1.6 in of rain forecast at IAD that day

↑ Later flights pick up delays from earlier in the day

↑ This route's recent record

↓ Mostly benign weather forecast at STN

↓ IAD usually runs smoothly

Weather at each end

STN (origin) Gusts8 kt Ceilingnone (clear) Visibility10+ mi Precipnone

IAD (destination) Gusts22 kt Ceiling200 ft Visibility0.7 mi Precip1.92 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.

UA 3819 · STN → IAD

Odds over time

How late will it get to IAD?