Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 1635 SCHEDULED · TYPICAL SCHEDULE

Monday, October 5 Tomorrow

UA 1635 · IAD → ATL

departs 10:28 PM ET · arrives 12:30 AM ET

Forecast issued Sun 1:00 AM ET · 46h before departure

Arrive at ATL more than 15 minutes late?

12% chance · ±1 pts −1 pt · 24h

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

How late will it get to ATL?

On time or early
88%
15–30 min late
6%
30 min–1 hour late
2%
1–2 hours late
3%
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

↑ Later flights pick up delays from earlier in the day

↑ This flight has been late 23% of the time recently

↑ 10pm departures from IAD are often late

↓ Mondays in October are usually quieter than average

↓ Cloud base down to 100 ft, visibility down to 1.66667 mi forecast at IAD that day

Weather at each end

IAD (origin) Gusts20 kt Ceiling200 ft Visibility6 mi Precipnone

ATL (destination) Gusts12 kt Ceiling300 ft Visibility3 mi Precip0.20 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 1635 · IAD → ATL

Odds over time

How late will it get to ATL?