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Cheap flights from Illinois to Ontario from C$ 146

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
5 Nov — 12 Nov1
1 adult

Find flights from Illinois to Ontario within your budget

Customize your flight search to find flights from Illinois to 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, Cheapflights users made 527,020 searches. Data last updated 31 October 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Tue 26/11

11:15 a.m.-4:45 p.m.

1 stop4h 30m

C$ 157

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 20/11

6:32 p.m.-9:54 a.m.

1 stop14h 22m

C$ 164

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 3/12

2:05 p.m.-4:46 p.m.

Nonstop1h 41m

C$ 170

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 26/11

8:35 a.m.-11:50 a.m.

Nonstop2h 15m

C$ 171

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 30/11

2:00 p.m.-7:30 p.m.

1 stop4h 30m

C$ 177

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 27/11

6:17 a.m.-1:41 p.m.

1 stop6h 24m

C$ 184

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Tue 3/12

11:15 a.m.-1:57 p.m.

Nonstop1h 42m

C$ 199

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 30/11

7:05 a.m.-12:00 p.m.

1 stop3h 55m

C$ 218

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Thu 12/12

5:35 p.m.-8:17 p.m.

Nonstop1h 42m

C$ 161

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 3/12

5:00 a.m.-9:25 p.m.

2 stops15h 25m

C$ 166

Flights are sorted by cheapest first

Deals found on 31/10

Showing 1-10 of 60 results
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Find flight deals from Illinois to Ontario

Cheapest flights from Illinois to Ontario
Explore the most affordable flight options available from Illinois to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2024.

Thu 21/115:35 p.m.MDW - YTZ
Nonstop1h 42mPorter Airlines
Mon 25/113:50 p.m.YTZ - MDW
Nonstop1h 50mPorter Airlines
Deal found 30/10C$ 331
Mon 2/128:25 p.m.ORD - YUL
1 stop4h 28mAir Canada
Wed 4/129:15 a.m.YUL - ORD
1 stop4h 56mAir Canada
Deal found 31/10C$ 355
Thu 21/115:35 p.m.MDW - YTZ
Nonstop1h 42mMultiple Airlines
Sun 24/113:50 p.m.YTZ - MDW
Nonstop1h 50mMultiple Airlines
Deal found 31/10C$ 358
Tue 3/1211:15 a.m.MDW - YUL
1 stop5h 45mPorter Airlines
Wed 4/126:50 a.m.YUL - MDW
1 stop5h 20mPorter Airlines
Deal found 30/10C$ 376
Sat 14/127:20 a.m.ORD - YYZ
1 stop5h 23mUnited Airlines
Sat 14/125:30 p.m.YYZ - ORD
Nonstop2h 07mUnited Airlines
Deal found 29/10C$ 377
Tue 3/128:25 p.m.ORD - YUL
1 stop12h 45mAmerican Airlines
Wed 4/1212:30 p.m.YUL - ORD
Nonstop2h 55mAmerican Airlines
Deal found 30/10C$ 385
Thu 5/128:11 a.m.ORD - YYZ
Nonstop1h 45mMultiple Airlines
Sun 8/129:00 a.m.YYZ - ORD
Nonstop2h 06mMultiple Airlines
Deal found 30/10C$ 402
Tue 26/112:00 p.m.ORD - YTZ
1 stop5h 43mAir Canada
Tue 3/1210:25 a.m.YTZ - ORD
1 stop5h 20mAir Canada
Deal found 31/10C$ 413
Tue 24/124:00 p.m.ORD - YYZ
Nonstop1h 41mAir Canada
Mon 6/12:00 p.m.YYZ - ORD
Nonstop1h 51mAir Canada
Deal found 30/10C$ 413
Tue 3/125:00 a.m.ORD - YTZ
2 stops15h 25mMultiple Airlines
Tue 17/124:30 p.m.YTZ - ORD
1 stop9h 04mMultiple Airlines
Deal found 30/10C$ 419
Tue 3/125:00 a.m.ORD - YUL
1 stop11h 35mMultiple Airlines
Wed 4/124:00 p.m.YUL - ORD
2 stops9h 34mMultiple Airlines
Deal found 31/10C$ 420
Mon 9/128:34 p.m.STL - YUL
1 stop19h 01mMultiple Airlines
Thu 12/125:35 p.m.YUL - STL
1 stop26h 59mMultiple Airlines
Deal found 31/10C$ 438

Best time to book a flight from Illinois to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Illinois to Ontario

Get recent, data-driven insights about flights from Illinois to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to Region of Ontario?

Currently, October is the cheapest month in which you can book a flight from Illinois to Region of Ontario (average of C$ 178). Flying from Illinois to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to ON?

Find hourly flight availability from Illinois to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 October 2024.

When flying from Illinois to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 31 October 2024.
Read through reviews of airlines operating flights from Illinois to Ontario, such as Air Canada, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,420 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Alaska Airlines
8.0
Very good
9,420 reviews
Alaska Airlines
8.0
Very good
9,420 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Delta
8.0
Very good
8,835 reviews
Alaska Airlines
8.0
Very good
9,420 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Porter Airlines
7.8
Good
294 reviews
Alaska Airlines
8.0
Very good
9,420 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Air Transat
7.8
Good
387 reviews
Alaska Airlines
8.0
Very good
9,420 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

United Airlines
7.4
Good
9,240 reviews
Alaska Airlines
8.0
Very good
9,420 reviews
Check prices

Boarding

8.2

Crew

8.6

Food

7.2

Comfort

7.9

Entertainment

7.1

Overall

8.0

Reviews

1 / 10

Service was good. We pre-ordered a snack but never made it to us.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Illinois to Region of Ontario one-way?

    One-way options have recently been found by users for as low as C$ 147 on Porter Airlines. Other airlines that offer cheap prices include United Airlines from C$ 170 and Air Canada from C$ 171 one-way.

  • Can I find deals for flights from Illinois to Ontario that include hotel bookings?

    Yes. In addition to deals on Illinois to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Ontario.

  • Can I find deals for business class flights from Illinois to Ontario?

    Yes. Cheapflights offers flight deals from Illinois to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Region of Ontario?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Region of Ontario (average of C$ 178). Flying from Illinois to Region of Ontario in July is currently the most expensive (average of C$ 258). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Illinois to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Illinois to Ontario

Discover the top 3 airlines that operate flights from Illinois to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 527,020 searches. Data last updated 31 October 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 183AverageC$ 464FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 199AverageC$ 473FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 303AverageC$ 463FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Illinois today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Illinois to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Illinois.

Can Cheapflights find flights from Illinois to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Illinois to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Ontario become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ontario from Illinois today and book when prices fit your budget.

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