Direct flights from Chicago to Ontario ORD → ONT

United Airlines operates nonstop flights from Chicago (ORD) to Ontario (ONT). The nonstop flight takes around ~3h 25m, covering 1,696 miles (2,730 km) and operates daily. Updated 28 June 2026.

📬 Cheap nonstop deals from Chicago

We'll email you when a fare from ORD drops well below normal. Free, weekly, no password needed.

Free · weekly digest · no password needed

United Airlines UA

Departure Schedule next 7 days

More nonstops from Chicago

ORD → ATL Atlanta 9 airlines ORD → LAS Las Vegas 6 airlines ORD → PUJ Punta Cana 6 airlines ORD → CUN Cancún 5 airlines ORD → FLL Fort Lauderdale 5 airlines ORD → LAX Los Angeles 5 airlines ORD → LGA New York 5 airlines ORD → MCO Orlando 5 airlines

Frequently asked questions

Is there a direct flight from Chicago to Ontario?

Yes, United Airlines operates nonstop flights from Chicago (ORD) to Ontario (ONT).

Which airlines fly direct from Chicago to Ontario?

United Airlines operates nonstop flights from Chicago to Ontario.

How long is the flight from Chicago to Ontario?

The nonstop flight from Chicago to Ontario takes ~3h 25m (approximately 2730 km).

How often do direct flights operate from Chicago to Ontario?

Nonstop flights from Chicago to Ontario operate daily.

Explore More

ORD All direct flights from Chicago 🗓 Find cheapest round-trip dates → ONT All direct flights from Ontario ONT → ORD Return: Ontario to Chicago
Cheap direct deals from Chicago — last one was $178 to Las Vegas