Direct flights from Ontario to Chicago

Did you mean Flights from Chicago to Ontario?

Ontario

United States

ONT

Ontario International Airport

Chicago

United States

ORD

Chicago O'Hare International Airport

Route: Nonstop service available
Distance: 1,697 miles
Marketing airlines: 2 airlines
Aircraft: 7 aircraft types
Dates: Oct 19, 2026 – Oct 17, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Departure window: 2026-10-23 – 2026-11-21.

No recent fares appear in this limited preview. This does not mean the route is sold out. Use the search controls to check other dates and routes.

Ontario to Chicago route overview

Ontario International Airport (ONT) serves Ontario; Chicago O'Hare International Airport (ORD) serves Chicago.

The airports are 1,697 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from ONT to ORD.

Marketing airlines listed in the current schedule, including codeshare sellers, are American Airlines (AA) and United Airlines (UA). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 19, 2026 – Oct 17, 2027.

Marketing airlines on the Ontario to Chicago route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

Airline alliance affiliations represented: Oneworld, Star Alliance

Aircraft flying from ONT to ORD

Frequently asked questions

Which airports serve the Ontario to Chicago route?

Ontario International Airport (ONT) is the origin airport and Chicago O'Hare International Airport (ORD) is the destination airport.

How far is Chicago from Ontario?

ONT and ORD are approximately 1,697 miles apart by great-circle distance.

Are there direct flights from ONT to ORD?

Yes. Roame's current schedule feed shows nonstop service from ONT to ORD.

Which airlines market flights from ONT to ORD?

Which aircraft fly from ONT to ORD?

Aircraft listed in the current schedule include Airbus A319 (319), Airbus A320 (320), Boeing 737-800 (738), Boeing 737-900 / Boeing 737-900ER (739), Boeing 737-700 / Boeing 737-700ER (73G), Boeing 737 MAX 8 (7M8) and JET.