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Cheap flights from Illinois to Ontario from C$ 72

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Ontario departing on 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Ontario

Cheap round-trip flights

Air Canada Logo
2:00 p.m. - 4:39 p.m.ORD-YYZ
1h 39mdirect
Air Canada Logo
8:15 a.m. - 9:13 a.m.YYZ-ORD
1h 58mdirect
C$ 207Air Canada
Find Deal
Fri, 14 Nov - Sun, 16 Nov
United Airlines Logo
8:48 a.m. - 2:14 p.m.ORD-YYZ
4h 26m1 stop
United Airlines Logo
5:30 p.m. - 6:39 p.m.YYZ-ORD
2h 09mdirect
C$ 211United Airlines
Find Deal
Sat, 8 Nov - Sat, 8 Nov
Porter Airlines Logo
5:20 p.m. - 8:02 p.m.MDW-YTZ
1h 42mdirect
Porter Airlines Logo
3:35 p.m. - 4:24 p.m.YTZ-MDW
1h 49mdirect
C$ 218Porter Airlines
Find Deal
Wed, 3 Sep - Mon, 8 Sep
United Airlines Logo
1:19 p.m. - 4:02 p.m.ORD-YYZ
1h 43mdirect
United Airlines Logo
7:40 p.m. - 11:43 p.m.YYZ-ORD
5h 03m1 stop
C$ 219United Airlines
Find Deal
Fri, 7 Nov - Fri, 7 Nov
Air Canada Logo
12:50 p.m. - 3:57 p.m.ORD-YUL
2h 07mdirect
Air Canada Logo
9:25 a.m. - 11:18 a.m.YUL-ORD
2h 53mdirect
C$ 225Air Canada
Find Deal
Fri, 14 Nov - Sun, 16 Nov
Air Canada Logo
10:00 a.m. - 12:39 p.m.ORD-YYZ
1h 39mdirect
Air Canada Logo
4:30 p.m. - 5:28 p.m.YYZ-ORD
1h 58mdirect
C$ 229Air Canada
Find Deal
Fri, 31 Oct - Tue, 4 Nov
American Airlines Logo
6:10 a.m. - 11:59 a.m.ORD-YYZ
4h 49m1 stop
American Airlines Logo
3:11 p.m. - 4:05 p.m.YYZ-ORD
1h 54mdirect
C$ 238American Airlines
Find Deal
Sat, 4 Oct - Sat, 4 Oct
American Airlines Logo
6:10 a.m. - 11:59 a.m.ORD-YYZ
4h 49m1 stop
American Airlines Logo
3:45 p.m. - 8:27 p.m.YYZ-ORD
5h 42m1 stop
C$ 260American Airlines
Find Deal
Sat, 4 Oct - Sat, 4 Oct
Porter Airlines Logo
9:35 a.m. - 12:17 p.m.MDW-YTZ
1h 42mdirect
Porter Airlines Logo
7:50 a.m. - 8:39 a.m.YTZ-MDW
1h 49mdirect
C$ 263Porter Airlines
Find Deal
Wed, 3 Sep - Sat, 6 Sep
British Airways Logo
5:10 p.m. - 11:03 p.m.ORD-YYZ
4h 53m1 stop
British Airways Logo
5:17 p.m. - 11:48 p.m.YYZ-ORD
7h 31m1 stop
C$ 303British Airways
Find Deal
Thu, 2 Oct - Sun, 5 Oct

WestJet flights from Illinois to Region of Ontario

Our best WestJet deals on Illinois to Region of Ontario flight tickets
WestJet
22 Sep
MDW7:15 p.m.Chicago Midway
15h 23m
1 stop
YYZ11:38 a.m.Toronto Pearson Intl
24 Sep
YYZ11:36 a.m.Toronto Pearson Intl
11h 00m
1 stop
MDW9:36 p.m.Chicago Midway
C$ 391
Find similar
WestJet
25 Nov
MDW9:20 a.m.Chicago Midway
5h 34m
1 stop
YYZ3:54 p.m.Toronto Pearson Intl
6 Jan
YYZ6:30 a.m.Toronto Pearson Intl
7h 38m
1 stop
MDW1:08 p.m.Chicago Midway
C$ 420
Find similar
WestJet
18 Aug
ORD7:15 a.m.Chicago O'Hare Intl
14h 43m
1 stop
YYZ10:58 p.m.Toronto Pearson Intl
21 Aug
YYZ1:20 p.m.Toronto Pearson Intl
6h 29m
1 stop
ORD6:49 p.m.Chicago O'Hare Intl
C$ 514
Find similar

United Airlines flights from Illinois to Region of Ontario

Our best United Airlines deals on Illinois to Region of Ontario flight tickets
United Airlines
8 Nov
ORD8:48 a.m.Chicago O'Hare Intl
4h 26m
1 stop
YYZ2:14 p.m.Toronto Pearson Intl
8 Nov
YYZ5:30 p.m.Toronto Pearson Intl
2h 09m
ORD6:39 p.m.Chicago O'Hare Intl
C$ 211
Find similar
United Airlines
7 Nov
ORD1:19 p.m.Chicago O'Hare Intl
1h 43m
YYZ4:02 p.m.Toronto Pearson Intl
7 Nov
YYZ7:40 p.m.Toronto Pearson Intl
5h 03m
1 stop
ORD11:43 p.m.Chicago O'Hare Intl
C$ 219
Find similar
United Airlines
7 Nov
ORD4:50 p.m.Chicago O'Hare Intl
1h 55m
YYZ7:45 p.m.Toronto Pearson Intl
10 Nov
YYZ5:30 p.m.Toronto Pearson Intl
2h 09m
ORD6:39 p.m.Chicago O'Hare Intl
C$ 231
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Region of Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 13 August 2025.
Use the filters below to find and compare flights from Illinois to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 14/11

2:00 p.m.-4:39 p.m.

Nonstop1h 39m

Toronto Pearson Intl

Sun 16/11

8:15 a.m.-9:13 a.m.

Nonstop1h 58m

C$ 207

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 8/11

8:48 a.m.-2:14 p.m.

1 stop4h 26m

Toronto Pearson Intl

Sat 8/11

5:30 p.m.-6:39 p.m.

Nonstop2h 09m

C$ 211

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Wed 3/9

5:20 p.m.-8:02 p.m.

Nonstop1h 42m

Toronto Island

Mon 8/9

3:35 p.m.-4:24 p.m.

Nonstop1h 49m

C$ 218

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 7/11

1:19 p.m.-4:02 p.m.

Nonstop1h 43m

Toronto Pearson Intl

Fri 7/11

7:40 p.m.-11:43 p.m.

1 stop5h 03m

C$ 219

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 14/11

12:50 p.m.-3:57 p.m.

Nonstop2h 07m

Montreal Pierre Elliott Trudeau Intl

Sun 16/11

9:25 a.m.-11:18 a.m.

Nonstop2h 53m

C$ 225

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 31/10

10:00 a.m.-12:39 p.m.

Nonstop1h 39m

Toronto Pearson Intl

Tue 4/11

4:30 p.m.-5:28 p.m.

Nonstop1h 58m

C$ 229

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 4/10

6:10 a.m.-11:59 a.m.

1 stop4h 49m

Toronto Pearson Intl

Sat 4/10

3:11 p.m.-4:05 p.m.

Nonstop1h 54m

C$ 238

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 4/10

6:10 a.m.-11:59 a.m.

1 stop4h 49m

Toronto Pearson Intl

Sat 4/10

3:45 p.m.-8:27 p.m.

1 stop5h 42m

C$ 260

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Wed 3/9

9:35 a.m.-12:17 p.m.

Nonstop1h 42m

Toronto Island

Sat 6/9

7:50 a.m.-8:39 a.m.

Nonstop1h 49m

C$ 263

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 2/10

5:10 p.m.-11:03 p.m.

1 stop4h 53m

Toronto Pearson Intl

Sun 5/10

5:17 p.m.-11:48 p.m.

1 stop7h 31m

C$ 303

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ontario from

How to get the cheapest flight ticket from Illinois 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

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

In general, July is the cheapest month to fly from Illinois to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 322. If you are unable to visit Region of Ontario during the month of July, then departing from Illinois during the month June is also very affordable. Most momondo users find prices during this month for around C$ 360.

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

The cheapest day to depart from Illinois to Region of Ontario is on a Saturday. Travellers who choose to depart for Region of Ontario on a Saturday will often find tickets for as low as C$ 338. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 579.

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 Illinois to Region of Ontario during this time can be as low as C$ 321. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 463 on average. Flights to Region of Ontario from Illinois in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Illinois to Ontario flight route?

Fly from Chicago Midway to Toronto Island for the best Illinois - 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 Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 420 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 Illinois for as low as C$ 229 on momondo.

What cabin class options are available on Illinois to Ontario flights?

There are 3 cabin classes available to choose from on Illinois 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 Illinois to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between Illinois to Region of Ontario.

Cheap Illinois to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Region of Ontario

Best price found

C$ 72

Fastest flight time

1h 39m

Direct flights

Every day

Airports in Region of Ontario

3 airports
The best one-way flight to Region of Ontario from Illinois in the past 72 hours is C$ 72. The best round-trip flight deal from Illinois to Region of Ontario found on momondo in the last 72 hours is C$ 207.
The fastest flight from Illinois to Region of Ontario takes 1h 39m
Direct flights go from Illinois to Region of Ontario every day.
There are 3 airports near Region of Ontario: Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ), Toronto Island (YTZ)
Search flight deals

  • When did momondo last update prices for flights from Illinois to Ontario?

    Prices for flights from Illinois to Ontario are updated daily.

  • How many operators does momondo search for flights from Illinois to Ontario?

  • How old do you have to be to fly from Illinois 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 Illinois to Ontario.

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

    The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Illinois to Region of Ontario?

Best airlines flying from Illinois to Region of Ontario

Compare and see reviews for airlines that fly from Illinois to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 203Free CancellationRating
7.1
9,943 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 259Free CancellationRating
7.4
8,920 reviews
Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Ontario . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo provides multiple filters to help you find the best flight to Ontario from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Illinois to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Ontario

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