What is the cheapest airline that flies from Chicago O'Hare Intl to Ontario?

Delta, Air Canada, and United Airlines are the most popular carriers operating from Chicago O'Hare Intl to Ontario

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Ontario?

Prices for flights from Chicago O'Hare Intl Airport to Ontario are refreshed on a daily basis.

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Ontario?

As of March 2026, there are 2 operators available to choose from for flights from Chicago O'Hare Intl Airport to Ontario.

How old do you have to be to fly from Chicago O'Hare Intl Airport to Ontario?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Ontario.

What documentation or ID do you need to fly to Ontario?

The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 124 Cheap Flights from Chicago O'Hare Intl Airport to Region of Ontario in 2026

Q: How many flights depart from Chicago O'Hare Intl Airport to Region of Ontario on average per day?

As of March 2026, there are 93 flights per day flying from Chicago O'Hare Intl Airport to Region of Ontario. The most common time of day flights depart is 6:00p.m., with 36% of flights taking off in the evening.

Q: How many flights depart from Chicago O'Hare Intl Airport to Region of Ontario on average per week?

657 flights are operational weekly from Chicago O'Hare Intl Airport to Region of Ontario as of March 2026. The most popular departure day for this route is Fri, with 15% of flights per week taking off on this day.

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Find the cheapest flights from Chicago O'Hare Intl Airport to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:45 a.m. - 12:00 p.m.

ORD

YUL

2h 15mdirect

8:40 a.m. - 10:18 a.m.

YUL

ORD

2h 38mdirect

C$ 279Air Canada

Wed, 13 May - Thu, 14 May

8:45 a.m. - 12:00 p.m.

ORD

YUL

2h 15mdirect

8:40 a.m. - 10:18 a.m.

YUL

ORD

2h 38mdirect

C$ 284Air Canada

Sun, 3 May - Sun, 10 May

11:45 a.m. - 2:25 p.m.

ORD

YTZ

1h 40mdirect

1:40 p.m. - 2:35 p.m.

YTZ

ORD

1h 55mdirect

C$ 298Porter Airlines

Fri, 4 Sep - Tue, 8 Sep

9:15 p.m. - 11:59 p.m.

ORD

YYZ

1h 44mdirect

11:00 a.m. - 12:00 p.m.

YYZ

ORD

2h 00mdirect

C$ 305United Airlines

Thu, 9 Jul - Sat, 18 Jul

11:45 a.m. - 2:25 p.m.

ORD

YTZ

1h 40mdirect

1:40 p.m. - 2:35 p.m.

YTZ

ORD

1h 55mdirect

C$ 309Porter Airlines

Tue, 1 Sep - Sat, 5 Sep

4:00 p.m. - 11:54 p.m.

ORD

YYZ

6h 54m

1 stop

11:00 a.m. - 12:00 p.m.

YYZ

ORD

2h 00mdirect

C$ 318United Airlines

Tue, 14 Jul - Sat, 18 Jul

6:01 p.m. - 12:35 p.m.

ORD

YOW

17h 34m

1 stop

3:55 p.m. - 12:22 a.m.

YOW

ORD

9h 27m

1 stop

C$ 509Multiple Airlines

Fri, 10 Apr - Mon, 13 Apr

6:01 p.m. - 12:35 p.m.

ORD

YOW

17h 34m

1 stop

9:40 a.m. - 12:22 a.m.

YOW

ORD

15h 42m

2 stops

C$ 516Multiple Airlines

Fri, 10 Apr - Mon, 13 Apr

5:30 p.m. - 5:20 a.m.

ORD

YXU

10h 50m

1 stop

6:10 a.m. - 4:40 p.m.

YXU

ORD

11h 30m

1 stop

C$ 832WestJet

Sat, 23 May - Tue, 26 May

5:30 p.m. - 5:20 a.m.

ORD

YXU

10h 50m

1 stop

5:55 p.m. - 4:40 p.m.

YXU

ORD

23h 45m

1 stop

C$ 851WestJet

Mon, 25 May - Thu, 28 May

Delta flights from Chicago O'Hare Intl Airport to Region of Ontario

Our best Delta deals on Chicago O'Hare Intl Airport to Region of Ontario flight tickets

Delta

18 Jul

ORD2:31 p.m.Chicago O'Hare Intl

7h 31m

1 stop

YYZ11:02 p.m.Toronto Pearson Intl

26 Jul

YYZ12:09 p.m.Toronto Pearson Intl

7h 20m

1 stop

ORD6:29 p.m.Chicago O'Hare Intl

C$ 339

Delta

7 May

ORD2:00 p.m.Chicago O'Hare Intl

7h 59m

1 stop

YYZ10:59 p.m.Toronto Pearson Intl

28 May

YYZ2:20 p.m.Toronto Pearson Intl

4h 45m

1 stop

ORD6:05 p.m.Chicago O'Hare Intl

C$ 340

Delta

23 Jun

ORD5:20 p.m.Chicago O'Hare Intl

4h 38m

1 stop

YYZ10:58 p.m.Toronto Pearson Intl

1 Jul

YYZ9:45 a.m.Toronto Pearson Intl

7h 51m

1 stop

ORD4:36 p.m.Chicago O'Hare Intl

C$ 354

Air Canada flights from Chicago O'Hare Intl Airport to Region of Ontario

Our best Air Canada deals on Chicago O'Hare Intl Airport to Region of Ontario flight tickets

Air Canada

13 May

ORD8:45 a.m.Chicago O'Hare Intl

2h 15m

YUL12:00 p.m.Montreal Pierre Elliott Trudeau Intl

14 May

YUL8:40 a.m.Montreal Pierre Elliott Trudeau Intl

2h 38m

ORD10:18 a.m.Chicago O'Hare Intl

C$ 279

Air Canada

3 May

ORD8:45 a.m.Chicago O'Hare Intl

2h 15m

YUL12:00 p.m.Montreal Pierre Elliott Trudeau Intl

10 May

YUL8:40 a.m.Montreal Pierre Elliott Trudeau Intl

2h 38m

ORD10:18 a.m.Chicago O'Hare Intl

C$ 284

Air Canada

30 May

ORD8:20 p.m.Chicago O'Hare Intl

4h 31m

1 stop

YUL1:51 a.m.Montreal Pierre Elliott Trudeau Intl

31 May

YUL8:40 a.m.Montreal Pierre Elliott Trudeau Intl

2h 38m

ORD10:18 a.m.Chicago O'Hare Intl

C$ 285

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 13/5

8:45 a.m.-12:00 p.m.

Nonstop2h 15m

Montreal Pierre Elliott Trudeau Intl

Thu 14/5

8:40 a.m.-10:18 a.m.

Nonstop2h 38m

C$ 279

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sun 3/5

8:45 a.m.-12:00 p.m.

Nonstop2h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

8:40 a.m.-10:18 a.m.

Nonstop2h 38m

C$ 284

Quickest round-trip

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Fri 4/9

11:45 a.m.-2:25 p.m.

Nonstop1h 40m

Toronto Island

Tue 8/9

1:40 p.m.-2:35 p.m.

Nonstop1h 55m

C$ 298

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 9/7

9:15 p.m.-11:59 p.m.

Nonstop1h 44m

Toronto Pearson Intl

Sat 18/7

11:00 a.m.-12:00 p.m.

Nonstop2h 00m

C$ 305

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 1/9

11:45 a.m.-2:25 p.m.

Nonstop1h 40m

Toronto Island

Sat 5/9

1:40 p.m.-2:35 p.m.

Nonstop1h 55m

C$ 309

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 14/7

4:00 p.m.-11:54 p.m.

1 stop6h 54m

Toronto Pearson Intl

Sat 18/7

11:00 a.m.-12:00 p.m.

Nonstop2h 00m

C$ 318

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 10/4

6:01 p.m.-12:35 p.m.

1 stop17h 34m

Ottawa

Mon 13/4

3:55 p.m.-12:22 a.m.

1 stop9h 27m

C$ 509

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 10/4

6:01 p.m.-12:35 p.m.

1 stop17h 34m

Ottawa

Mon 13/4

9:40 a.m.-12:22 a.m.

2 stops15h 42m

C$ 516

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Sat 23/5

5:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Tue 26/5

6:10 a.m.-4:40 p.m.

1 stop11h 30m

C$ 832

ChicagoLondon

ORD - YXU

ORDYXU

Chicago O'Hare Intl

Mon 25/5

5:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Thu 28/5

5:55 p.m.-4:40 p.m.

1 stop23h 45m

C$ 851

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

In general, February is the cheapest month to fly from Chicago O'Hare Intl Airport to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 298. If you are unable to visit Region of Ontario during the month of February, then departing from Chicago O'Hare Intl Airport during the month July is also very affordable. Most momondo users find prices during this month for around C$ 325.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from Chicago O'Hare Intl Airport to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 296. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 506.

What is the cheapest time of day to depart on your flight to Region of Ontario?

Our most recent data shows that the best time of day to fly to Region of Ontario is in the evening. Flights from Chicago O'Hare Intl Airport to Region of Ontario during this time can be as low as C$ 265. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 451 on average. Flights to Region of Ontario from Chicago O'Hare Intl Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Chicago O'Hare Intl to Ontario flight route?

Fly from Chicago O'Hare Intl to Toronto Pearson Intl for the best Chicago O'Hare Intl - Ontario flight prices

How far in advance should I book a flight to Region of Ontario?

You are more likely to see cheaper flights to Region of Ontario from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 401 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Chicago O'Hare Intl Airport for as low as C$ 198 on momondo.

What cabin class options are available on Chicago O'Hare Intl to Ontario flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between Chicago O'Hare Intl Airport to Region of Ontario.

Cheap Chicago O'Hare Intl Airport to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Region of Ontario

Best price found	C$ 198
Fastest flight time	1h 39m
Direct flights	Every day
Airports in Region of Ontario	123 airports

The best one-way flight to Region of Ontario from Chicago O'Hare Intl Airport in the past 72 hours is C$ 198. The best round-trip flight deal from Chicago O'Hare Intl Airport to Region of Ontario found on momondo in the last 72 hours is C$ 368.

The fastest flight from Chicago O'Hare Intl Airport to Region of Ontario takes 1h 39m

Direct flights go from Chicago O'Hare Intl Airport to Region of Ontario every day.

There are 123 airports in Region of Ontario. From Chicago O'Hare Intl Airport there are direct flights to Toronto Pearson Intl (YYZ), Toronto Island (YTZ).

Search flight deals

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Ontario?
Prices for flights from Chicago O'Hare Intl Airport to Ontario are refreshed on a daily basis.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Ontario?
As of March 2026, there are 2 operators available to choose from for flights from Chicago O'Hare Intl Airport to Ontario.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Ontario?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago O'Hare Intl Airport to Region of Ontario?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and Region of Ontario, the leading plane model is Embraer 175 (Enhanced Winglets), making up 12.28% of the total bookings. Other popular models include De Havilland (Bombardier) DHC-8-400 Dash 8Q with 10.92%, Embraer 170 with 9.54%, and Embraer 175 with 9.16%.

Best airlines flying from Chicago O'Hare Intl Airport to Region of Ontario

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 207	Free Cancellation	Rating 7.1 10,835 reviews		Search Air Canada flights
United Airlines	PriceFrom C$ 258	Free Cancellation	Rating 7.4 9,462 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Chicago.

Can I find flights from Chicago to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from Chicago with this policy.

How can momondo help me find flights from Chicago to Ontario?

momondo helps you find the best flight between Chicago and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Chicago to Ontario right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.