ONT → ORDOntario to Chicago

live

Direct flights from Ontario (ONT) to Chicago (ORD): 7 nonstop departures observed each week across 1 airline. 88% of the last 8 operated flights arrived within 15 minutes of schedule. The median arrival is 4 minutes late. No cancellations were recorded across the 8 tracked flights. The nonstop covers 2,730 km, an estimated 4 hours 0 minutes in the air. Measured by Pro Flight Search from live flight boards at Ontario and Chicago. Updated 10 October 2026 at 17:26 UTC.

ONT Ontario smooth · +13
ORD Chicago smooth · +0
2,730 km · ~4h 00m est.
departs 07:007x weekly
Runs reliable · 1 airline · 7x weekly · nonstop
88% on time

of the last 8 operated ONT → ORD flights arrived within 15 minutes

Median arrival delay is +4 min. 0 of 8 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+4 minacross the last 8 operated legs
Flight time~4h 00mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
United AirlinesUA88% on time

Flights UA2226 07:00 daily

History

operated legs · board outcomes
10-10UA2226departed+16
10-09UA2226dep +15 → arr+3
10-08UA2226dep +23 → arr+5
10-07UA2226dep +13 → arr−5
10-06UA2226dep +10 → arr−4
10-05UA2226dep +22 → arr+4
10-04UA2226dep +28 → arr+4
10-03UA2226dep +8 → arr−15

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
ONTOntario +13 min smooth 🌤 overcast · N 0 kt Full ONT delay board →
ORDChicago +0 min smooth 🌤 scattered clouds · S 12 kt Full ORD delay board →

Weather lens

Current conditions put the pressure at ONT and ORD: 43% odds of a 15+ minute delay and around +12 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Ontario to Chicago route actually runs

Pro Flight Search records official board updates for nonstop ONT to ORD flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Ontario (ONT) to Chicago (ORD) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/ONT-ORD
How we measure this →

ONT to ORD questions

Is ONT–ORD running on time right now?

Smooth skies ahead. The departure side at ONT is the weaker end, route health score 91/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from ONT to ORD?

Great-circle distance is 2,730 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 223–264 min gate-to-gate on this route.

How often does ONT–ORD fly?

United Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at ONT and arrival-side delay at ORD, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.