Tracked live by the FAA. The scheduled times shown are from a typical Tuesday because the FAA's flight plan was first seen after takeoff.

UNITED · FLIGHT UA 599 SCHEDULED

Tuesday, September 29 Today

UA 599 · IAD → DEN

departs 5:41 PM ET · arrives 7:45 PM MT

Forecast issued Tue 6:00 PM ET · 0h before departure

Arrive at DEN more than 15 minutes late?

100% chance · ±0 pts −14 pts · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

How late will it get to DEN?

On time or early
84%
15–30 min late
7%
30 min–1 hour late
3%
1–2 hours late
3%
Over 2 hours late
1%
Cancelled
<1%

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

What’s moving the odds

↑ Arrivals into DEN at that hour are often late

↑ 5pm departures from IAD are often late

↑ Later flights pick up delays from earlier in the day

↓ Mostly benign weather forecast at IAD

↓ Mostly benign weather forecast at DEN

Weather at each end

IAD (origin) Gusts9 kt Ceiling4,200 ft Visibility10+ mi Precipnone

DEN (destination) Gusts9 kt Ceiling6,000 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.

UA 599 · IAD → DEN

Odds over time

How late will it get to DEN?