Direct flights from Chicago to Ontario

Did you mean Flights from Ontario to Chicago?

Chicago

United States

ORD

Chicago O'Hare International Airport

Ontario

United States

ONT

Ontario International Airport

Route: Nonstop service available
Distance: 1,697 miles
Marketing airlines: 2 airlines
Aircraft: 6 aircraft types
Dates: Nov 2, 2026 – Oct 31, 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.

Lowest price in this limited sample: 25,200 points + $5.00 for ORD → ONT, Economy, on 2026-11-16, booked with United MileagePlus. This is an observed fare, not a guaranteed price or the lowest price across all dates and programs.

Departure window: 2026-11-12 – 2026-12-11.

ORD → ONTEconomy
UA1904
25,200 points+ $5.00
Departure
2026-11-16
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-12 07:10
ORD → ONTEconomy
UA1904
27,500 points+ $5.00
Departure
2026-11-16
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 18:12
ORD → ONTEconomy
UA1904
28,200 points+ $5.00
Departure
2026-11-12
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 06:58
ORD → ONTEconomy
UA1904
32,600 points+ $5.00
Departure
2026-11-16
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 07:56
ORD → ONTEconomy
UA1904
60,300 points+ $5.00
Departure
2026-11-15
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 07:54
ORD → ONTFirst
UA1904
77,500 points+ $5.00
Departure
2026-11-16
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 18:12
ORD → ONTFirst
UA1904
78,900 points+ $5.00
Departure
2026-11-16
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 07:56
ORD → ONTFirst
UA1904
93,800 points+ $5.00
Departure
2026-11-16
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-12 07:10
ORD → ONTFirst
UA1904
95,400 points+ $5.00
Departure
2026-11-15
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 07:54
ORD → ONTFirst
UA1904
100,000 points+ $5.00
Departure
2026-11-12
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-11-11 06:58

Chicago to Ontario route overview

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

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

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

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 Nov 2, 2026 – Oct 31, 2027.

Marketing airlines on the Chicago to Ontario 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 ORD to ONT

Frequently asked questions

Which airports serve the Chicago to Ontario route?

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

How far is Ontario from Chicago?

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

Are there direct flights from ORD to ONT?

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

Which airlines market flights from ORD to ONT?

Which aircraft fly from ORD to ONT?

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