CA $178 Cheap Flight to Illinois

View CA $178 flight on Tue, Mar 10, 2026Opens in a new window

Popular airlines to Illinois

  • Frontier Airlines

  • Delta

  • American Airlines

  • United

  • Spirit Airlines

  • Southwest Airlines

  • Alaska Airlines

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How much is the cheapest flight to Illinois?

Prices were available within the past 7 days and start at CA $178 for one-way flights and CA $278 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Apr 16 - Mon, Apr 20
YYZ
Toronto
STL
St. Louis
CA $278 Roundtrip, just found
CA $278
Roundtrip
just found
Select American Airlines flight, departing Thu, Apr 16 from Toronto to St. Louis, returning Mon, Apr 20, priced at CA $278 just found
American Airlines
Fri, Apr 3 - Mon, Apr 6
YUL
Montreal
STL
St. Louis
CA $279 Roundtrip, just found
CA $279
Roundtrip
just found
Select American Airlines flight, departing Fri, Apr 3 from Montreal to St. Louis, returning Mon, Apr 6, priced at CA $279 just found
Porter Airlines
Tue, Jun 2 - Tue, Jun 2
YUL
Montreal
MDW
Chicago
CA $282 Roundtrip, just found
CA $282
Roundtrip
just found
Select Porter Airlines flight, departing Tue, Jun 2 from Montreal to Chicago, returning Tue, Jun 2, priced at CA $282 just found
Air Canada
Mon, May 4 - Thu, May 7
YUL
Montreal
ORD
Chicago
CA $282 Roundtrip, just found
CA $282
Roundtrip
just found
Select Air Canada flight, departing Mon, May 4 from Montreal to Chicago, returning Thu, May 7, priced at CA $282 just found
Air Canada
Mon, May 4 - Wed, May 13
YUL
Montreal
ORD
Chicago
CA $287 Roundtrip, just found
CA $287
Roundtrip
just found
Select Air Canada flight, departing Mon, May 4 from Montreal to Chicago, returning Wed, May 13, priced at CA $287 just found
Delta
Sat, May 9 - Sat, May 9
YUL
Montreal
ORD
Chicago
CA $290 Roundtrip, just found
CA $290
Roundtrip
just found
Select Delta flight, departing Sat, May 9 from Montreal to Chicago, returning Sat, May 9, priced at CA $290 just found
United
Sun, May 24 - Tue, Jun 9
YUL
Montreal
ORD
Chicago
CA $292 Roundtrip, found 4 hours ago
CA $292
Roundtrip
found 4 hours ago
Select United flight, departing Sun, May 24 from Montreal to Chicago, returning Tue, Jun 9, priced at CA $292 found 4 hours ago
United
Wed, Mar 11 - Tue, Mar 17
YYZ
Toronto
ORD
Chicago
CA $299 Roundtrip, found 4 days ago
CA $299
Roundtrip
found 4 days ago
Select United flight, departing Wed, Mar 11 from Toronto to Chicago, returning Tue, Mar 17, priced at CA $299 found 4 days ago
Delta
Fri, Apr 24 - Fri, Apr 24
YYZ
Toronto
MDW
Chicago
CA $299 Roundtrip, found 4 days ago
CA $299
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Apr 24 from Toronto to Chicago, returning Fri, Apr 24, priced at CA $299 found 4 days ago
WestJet
Sat, Aug 1 - Sat, Aug 1
YYZ
Toronto
ORD
Chicago
CA $446 Roundtrip, found 5 days ago
CA $446
Roundtrip
found 5 days ago
Select WestJet flight, departing Sat, Aug 1 from Toronto to Chicago, returning Sat, Aug 1, priced at CA $446 found 5 days ago

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Trending flights to Illinois

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Apr 16 - Mon, Apr 20
YYZ
Toronto
STL
St. Louis
CA $278 Roundtrip, just found
CA $278
Roundtrip
just found
Select American Airlines flight, departing Thu, Apr 16 from Toronto to St. Louis, returning Mon, Apr 20, priced at CA $278 just found

Frequently asked questions

How do I find cheap flights to Illinois that have flexible change policies?
By using our helpful "No change fee" filter, that's how. Simply enter your preferred dates and destination, click the "Search" button, then tick the checkbox directly under the "Flexible change policies" heading (top left-hand side of your screen). Expedia makes it simple to find flexible, cheap airfares to Illinois.
Which airlines fly to Illinois?
Find a seat with any of these leading airlines and get set to explore the best of Illinois:

  • United Airlines - 12,916 flights to or near Illinois each month, including 12,777 flights to O'Hare Intl. Airport (ORD) and 138 to Quad City Intl. Airport (MLI) per month.
  • American Airlines - 9,292 flights to or near Illinois each month, including 9,109 flights to O'Hare Intl. Airport (ORD) and 182 to Quad City Intl. Airport (MLI) per month.
  • Southwest Airlines - 4,810 flights to or near Illinois each month, including 4,441 flights to Midway Intl. Airport (MDW) and 368 to O'Hare Intl. Airport (ORD) per month.

How can I find cheap tickets to Illinois?
For an unbeatable deal to Illinois, book in advance. Also use Expedia's "flexible dates" link at the top of your search results. This will display prices for similar time frames. In the last seven days, CA $278 was the lowest price for a flight to Illinois.
How much is a flight to Illinois?
You could have locked in a return flight to Illinois from anywhere between CA $278 and CA $446 in the last seven days. For one-way trips departing from Montreal (YUL), the lowest amount paid during this time was CA $178.
What are the most popular airports to fly into in Illinois?
Which airport you touch down at in Illinois mostly depends on where you begin your journey and your final destination. Listed below are the most favoured airports in this region:

  • O'Hare Intl. Airport (ORD) - 24,728 flights per month.
  • Midway Intl. Airport (MDW) - 4,927 flights per month.
  • Quad City Intl. Airport (MLI) - 421 flights per month.

When is the cheapest time to fly to Illinois?
If you'd prefer to spend your vacation money enjoying Illinois rather than on your journey there, leave early in the week. The cheapest day to fly is usually Tuesday, with Monday close behind. With many folks travelling on weekends, Saturday often has the highest fares.
How much is a plane ticket to Illinois?
In the last seven days, flights to Illinois varied from CA $278 to CA $446.
What are the best things to do in Illinois?

  • Brimming with character and cultural allure, Chicago is a great base for your Illinois trip. Explore big-name attractions like Wrigley Field, get some retail therapy or wine and dine your way around some of this destination's fantastic restaurants. It's your choice!
  • When selecting the clothes to pack for your vacation, take into account that Chicago has a humid continental climate. For a clearer idea of what to expect, look up the weather before you go.
  • About 129 kilometres to the west of Chicago, Rockford also deserves to be at the top of your itinerary. Favourite sights in this city include Blackhawk Island — make sure you add it to your sightseeing list.

What is the best time to go to Illinois?
Anytime is a fantastic time to see Chicago, Illinois's most populated city, but May, June and July are when it's at its busiest. Summer begins June 51 kg the U.S. and is a perfect time to go if you enjoy the outdoors. Typically, temperatures range from 19ºC to 24ºC during this season.
What months are the cheapest to book a flight to Illinois?
The best month to purchase budget flights to Illinois is February. It's worth remembering that in the U.S, an expensive time to book a ticket is during the month of December.

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Top Travel Tips for Flying to Illinois

Get ready for an incredible adventure as you embark on your journey to Illinois. With Expedia, finding the perfect flights is a breeze. Discover valuable travel insights and expert tips to ensure a seamless and enjoyable trip to this captivating destination.

Unleash Your Wanderlust

Pack your bags, secure your flights to Illinois, and let Expedia be your trusted companion in fulfilling your travel dreams. Our wide selection of flights offers you the flexibility to explore Illinois in your own unique style. Experience the trip of a lifetime with just a click, courtesy of Expedia.

Unbeatable Value with Expedia

At Expedia, we understand the importance of budget-friendly travel. That's why we are dedicated to bringing you the best deals on affordable and cheap flights from the UK to Illinois. Experience the perfect balance between adventure and savings with our competitively-priced roundtrip and one-way flight options.

Endless Flight Choices

With 20 different airlines flying to Illinois, you have a world of options at your fingertips. Whether you're a spontaneous traveler or a meticulous planner, find the flights that suit your schedule and preferences seamlessly. Explore last-minute deals or plan ahead with ease.

Empowering Your Decision

We believe in putting you in control of your travel choices. Our extensive range of airline tickets to Illinois caters to every budget, starting from the lowest price CA $178. Enjoy the freedom to choose the perfect flights that align with your needs and desires.

Effortless Booking Process

Experience a hassle-free booking journey with Expedia. Whether you're seeking a red-eye flight, a direct route to a specific airport, or one-way flights to Illinois, our streamlined booking process ensures convenience and efficiency. Download our mobile booking app to reserve your flights anytime, anywhere.

Your Adventure Awaits

It's time to make your dreams a reality. Book your airfare to Illinois today with Expedia. Begin crafting your unique travel story and get ready for an unforgettable experience that caters to your tastes and budget.

Start your journey now and let the adventure unfold.

Top Travel Tips for Flying to Illinois

Travel information

Illinois Flights Information

Airlines serving
Air Canada, Porter Airlines, American Airlines, United, Delta, WestJet
Roundtrip price
from CA $278
Illinois Flights Information

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