Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 2171 SCHEDULED · TYPICAL SCHEDULE

Wednesday, September 30

UA 2171 · ONT → ORD

departs 6:10 AM PT · arrives 12:25 PM CT

Forecast issued Wed 10:00 PM ET · 13h after departure

Arrive at ORD more than 15 minutes late?

30% chance · ±0 pts +0 pts · 24h

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

How late will it get to ORD?

On time or early
70%
15–30 min late
8%
30 min–1 hour late
12%
1–2 hours late
4%
Over 2 hours late
6%
Cancelled
1%

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

What’s moving the odds

↑ Cloud base down to 500 ft, visibility down to 1.75 mi, 0.9 in of rain forecast at ORD that day

↑ Arrivals into ORD at that hour are often late

↑ ORD is busy at that time

↓ Early flights usually leave on time

↓ 6am departures from ONT are usually not late

Weather at each end

ONT (origin) Gusts18 kt Ceilingnone (clear) Visibility10+ mi Precipnone

ORD (destination) Gusts19 kt Ceiling500 ft Visibility1.75 mi Precip0.95 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 2171 · ONT → ORD

Odds over time

How late will it get to ORD?