Cheap flights from Chicago to Ontario from £159

Trusted by millions

Kiwi.com Guarantee for stress-free travel

One search, all the best deals

Explore flight deals to Ontario

1 stop
Wed, Jul 23
Chicago ORDOntario ONT

£159
Search
1 stop
Wed, Jul 23
Chicago ORDOntario ONT

£159
Search
1 stop
Wed, Jul 23
Chicago ORDOntario ONT

£159
Search
1 stop
Wed, Jul 23
Chicago ORDOntario ONT

£167
Search
1 stop
Wed, Jul 23
Chicago ORDOntario ONT

£167
Search
1 stop
Wed, Jul 23
Chicago ORDOntario ONT

£167
Search

Prices updated:

1 stop
Sat, Jul 26 – Wed, Jul 30
Chicago ORDOntario ONT

£331
Search
1 stop
Sat, Jul 26 – Tue, Jul 29
Chicago ORDOntario ONT

£338
Search
1 stop
Sat, Jul 26 – Tue, Jul 29
Chicago ORDOntario ONT

£338
Search
1 stop
Sat, Jul 26 – Tue, Jul 29
Chicago ORDOntario ONT

£338
Search
1 stop
Sat, Jul 26 – Wed, Jul 30
Chicago ORDOntario ONT

£339
Search
1 stop
Sat, Jul 26 – Tue, Jul 29
Chicago ORDOntario ONT

£345
Search

Prices updated:

Key info about flying to Ontario

Depart from
O Hare International
Arrive to
Ontario International
Average flights per week
114
Flight distance
2733 km
Worth visiting
Griffith Observatory

Weekly direct flights

Discover the top airlines offering direct flights from Chicago to Ontario in the next month. You’ll find the number of daily direct flights per airline in the chart.

AirlineMon 30.06Tue 01.07Wed 02.07Thu 03.07Fri 04.07Sat 05.07Sun 06.07
---------1111
Weekly flights: 4 totalDaily flights: 0.57 averageMost flights: Thursday 1 flights
AirlineMon 07.07Tue 08.07Wed 09.07Thu 10.07Fri 11.07Sat 12.07Sun 13.07
1111111
Weekly flights: 7 totalDaily flights: 1 averageMost flights: Monday 1 flights
AirlineMon 14.07Tue 15.07Wed 16.07Thu 17.07Fri 18.07Sat 19.07Sun 20.07
1111111
Weekly flights: 7 totalDaily flights: 1 averageMost flights: Monday 1 flights
AirlineMon 21.07Tue 22.07Wed 23.07Thu 24.07Fri 25.07Sat 26.07Sun 27.07
1111111
Weekly flights: 7 totalDaily flights: 1 averageMost flights: Monday 1 flights

Check-in for a flight from Chicago to Ontario

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUANo
Hawaiian AirlinesHALHANo
Alaska AirlinesASAASNo

Weather in Ontario

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January18°C7°C
February18°C7°C
March19°C8°C
April23°C10°C
May25°C12°C
June29°C16°C
July33°C19°C
August33°C20°C
September32°C18°C
October27°C15°C
November22°C10°C
December17°C7°C
Hottest Month
33°C
August
Coldest month
7°C
February
Sunny days
340
days per year

14 day forecast

Friday
27 Jun
33°C18°C
4 Jul
29°C16°C
Saturday
28 Jun
36°C19°C
5 Jul
30°C16°C
Sunday
29 Jun
33°C22°C
6 Jul
32°C17°C
Monday
30 Jun
31°C20°C
7 Jul
35°C19°C
Tuesday
1 Jul
33°C18°C
8 Jul
39°C22°C
Wednesday
2 Jul
31°C18°C
9 Jul
73%
37°C24°C
Thursday
3 Jul
29°C16°C
10 Jul
36°C23°C

Ontario travel tips

Have botany classes at the Rancho Santa Ana Botanic Garden in Ontario
See one of 12 monuments to the pioneer woman in Ontario
Feel Latin vibes at El Pescador in Ontario
Travelers usually depart from O Hare International, Chicago Midway International, or Chicago Rockford International when they travel from Chicago to Ontario. The distance between Chicago and Ontario is 2733 km. The most popular airlines for this route are United Airlines, Hawaiian Airlines, and Alaska Airlines. Chicago and Ontario have 114 direct flights per week.

Frequently asked questions

How long does it take to travel from Chicago to Ontario?
What is the flight distance between Chicago and Ontario?
What airlines offer nonstop (direct) flights between Chicago and Ontario?
What are the most popular routes to and from Chicago?
What are the most popular routes to and from Ontario?
Which airports are there in Chicago?
What airports are near Chicago?
What airports are near Ontario?
Which airlines fly between Chicago and Ontario?
When’s the best time to travel between Chicago and Ontario?
What flights operate between Chicago and Ontario?
How many airports are there near Chicago?
How many airports are there near Ontario?
What time do nonstop (direct) flights between Chicago and Ontario depart?
What time do nonstop (direct) flights between Chicago and Ontario arrive?
What time do flights between Chicago and Ontario depart?
What time do flights between Chicago and Ontario arrive?

Explore alternative trips

Flights from Chicago

Flights to Ontario

Popular routes

The nearest countries with flights to Ontario

Here is a list of countries people are flying from

Other destination countries from Chicago

Here is a list of countries people are flying to

Download our app

Start your next adventure now. Download our app and explore cheap flights effortlessly!

Find the best connection from Chicago to Ontario
Search flights

We hack the system,
you fly for less