How long is the flight from Québec City to Illinois?

Airlines like United Airlines, Air Canada, and Porter Airlines fly from Québec City to Illinois in about 2h 55m. The time it takes to get you to your destination can typically vary by up to 18h. Québec City and Illinois are separated by a distance of 1413 km. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Illinois, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What are the most popular routes from Québec City to Illinois?

When deciding which route to take from Québec City to Illinois consider Québec City - Chicago O'Hare Intl, Québec City - Chicago Midway or Québec City - Lambert-St Louis as they are the most popular.

What are the cheapest flights from Québec City to Illinois?

Looking at all options, your cheapest flight can be booked for C$ 433. While the most popular route (Québec City - Chicago O'Hare Intl) can be booked for C$ 492 on average, our data indicates C$ 604 when flying from Québec City to Illinois.

What are the most reliable airlines from Québec City to Illinois?

No one likes to see their flight delayed. When booking a flight from Québec City to Illinois consider choosing Qatar Airways (79%), Air Canada (71%) or United Airlines (71%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Québec City to Illinois?

When booking a flight from Québec City to Illinois, you may want to consider flying on Air Canada, United Airlines or American Airlines as they are the most popular for this route.

What airport do you fly from for flights from Québec City to Illinois?

Most people fly from Québec City (YQB) if they book a flight from Québec City to Illinois. Québec City is conveniently located just 13.5 km from Québec City’s city centre.

Can I find deals for flights from Québec City to Illinois that include hotel bookings?

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

How can I find direct flights from Québec City to Illinois?

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

Can I find deals for business class flights from Québec City to Illinois?

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

C$ 259+ Cheap Flights from Québec City to Illinois

Cheap flight deals from Québec City to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Québec City to Illinois
Explore the most affordable flight options available from Québec City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Thu 15/106:10 a.m. -

1 stop5h 02m

Fri 23/108:45 a.m. -

1 stop4h 10m

Deal found 9/9C$ 443

Tue 6/106:10 a.m. -

1 stop5h 02m

Sat 10/103:40 p.m. -

1 stop6h 11m

Deal found 9/9C$ 460

Thu 22/1010:20 a.m. -

1 stop5h 35m

Sun 25/107:05 a.m. -

1 stop5h 55m

Deal found 8/9C$ 466

Thu 1/1010:25 a.m. -

1 stop5h 27m

Mon 5/103:45 p.m. -

1 stop6h 57m

Deal found 9/9C$ 467

Thu 24/95:35 a.m. -

1 stop5h 40m

Mon 28/95:35 p.m. -

1 stop5h 02m

Deal found 8/9C$ 468

Wed 2/1210:55 a.m. -

1 stop4h 57m

Mon 7/123:45 p.m. -

1 stop6h 01m

Deal found 8/9C$ 481

Tue 27/103:05 p.m. -

1 stop5h 47m

Tue 3/117:05 a.m. -

1 stop5h 55m

Deal found 12/9C$ 486

Wed 21/105:00 a.m. -

1 stop5h 00m

Sun 25/107:05 a.m. -

1 stop5h 55m

Deal found 8/9C$ 488

Thu 15/106:10 a.m. -

1 stop5h 02m

Sat 24/108:45 a.m. -

1 stop4h 10m

Deal found 8/9C$ 495

Wed 21/103:00 p.m. -

Nonstop2h 55m

Sun 25/1011:12 a.m. -

Nonstop2h 33m

Deal found 8/9C$ 496

Fri 2/1011:00 a.m. -

1 stop4h 35m

Wed 7/103:20 p.m. -

1 stop22h 02m

Deal found 10/9C$ 653

Fri 2/1011:00 a.m. -

1 stop4h 35m

Sun 11/103:20 p.m. -

1 stop22h 02m

Deal found 10/9C$ 655

Best flights from Québec City to Illinois
Discover carefully curated flight deals from Québec City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Wed 21/103:00 p.m. -

Nonstop2h 55m

Sun 25/1011:12 a.m. -

Nonstop2h 33m

Deal found 8/9C$ 496

Wed 2/123:45 p.m. -

Nonstop3h 09m

Mon 7/127:05 a.m. -

1 stop5h 56m

Deal found 8/9C$ 508

Thu 22/105:35 a.m. -

2 stops9h 25m

Wed 28/104:05 p.m. -

1 stop5h 56m

Deal found 12/9C$ 709

Thu 15/103:05 p.m. -

1 stop20h 55m

Mon 19/103:20 p.m. -

1 stop22h 02m

Deal found 12/9C$ 727

Wed 27/16:00 a.m. -

1 stop13h 38m

Fri 29/13:29 p.m. -

1 stop6h 18m

Deal found 11/9C$ 508

Thu 15/104:55 p.m. -

1 stop7h 26m

Mon 19/1010:30 a.m. -

Nonstop2h 42m

Deal found 12/9C$ 518

Thu 22/104:55 p.m. -

1 stop7h 26m

Sun 25/105:00 a.m. -

1 stop6h 00m

Deal found 11/9C$ 529

Sat 17/104:55 p.m. -

1 stop6h 34m

Sat 24/1010:30 a.m. -

Nonstop2h 42m

Deal found 11/9C$ 529

Thu 24/96:40 a.m. -

1 stop8h 55m

Mon 28/93:20 p.m. -

1 stop22h 07m

Deal found 8/9C$ 740

Tue 6/106:00 a.m. -

1 stop7h 54m

Sun 11/105:00 a.m. -

1 stop6h 02m

Deal found 11/9C$ 529

Thu 15/104:55 p.m. -

2 stops19h 05m

Fri 23/103:20 p.m. -

1 stop22h 02m

Deal found 9/9C$ 740

Thu 15/104:55 p.m. -

1 stop7h 26m

Sat 24/1010:30 a.m. -

Nonstop2h 42m

Deal found 11/9C$ 529

Fri 2/1011:00 a.m. -

1 stop4h 35m

Fri 9/103:20 p.m. -

2 stops27h 40m

Deal found 10/9C$ 824

Tue 6/103:05 p.m. -

1 stop20h 55m

Fri 9/103:20 p.m. -

1 stop22h 02m

Deal found 11/9C$ 833

Tue 6/106:00 a.m. -

2 stops14h 41m

Wed 7/106:00 a.m. -

2 stops9h 12m

Deal found 11/9C$ 733

Thu 15/103:05 p.m. -

1 stop20h 55m

Sat 24/103:20 p.m. -

1 stop17h 42m

Deal found 12/9C$ 898

Tue 13/106:00 a.m. -

2 stops10h 43m

Sat 17/109:04 a.m. -

2 stops12h 37m

Deal found 11/9C$ 736

Tue 6/104:55 p.m. -

2 stops22h 40m

Sat 10/1011:45 a.m. -

2 stops7h 15m

Deal found 9/9C$ 977

Sat 24/1012:45 p.m. -

2 stops11h 46m

Thu 29/106:00 a.m. -

1 stop7h 45m

Deal found 11/9C$ 736

Mon 26/105:45 p.m. -

1 stop16h 08m

Sat 31/108:30 a.m. -

1 stop5h 15m

Deal found 11/9C$ 736

Tue 6/104:55 p.m. -

2 stops22h 40m

Sun 11/1011:45 a.m. -

2 stops7h 15m

Deal found 10/9C$ 991

Fri 9/103:53 p.m. -

1 stop6h 16m

Sat 17/109:30 a.m. -

1 stop12h 11m

Deal found 11/9C$ 736

Sat 17/103:05 p.m. -

1 stop24h 30m

Sat 24/103:20 p.m. -

1 stop20h 50m

Deal found 11/9C$ 992

Find flight deals from Québec City to Illinois

Round-trip from	C$ 443
One-way from	C$ 259
Popular in	February
Cheapest in	November
Average price	C$ 558
Good round-trip deal	C$ 547 or less
Good one-way deal	C$ 471 or less

Air Canada
15/10-23/10
2 total stops
9h 12m total
Québec City to Illinois

Search Deals

Air Canada
7/10-31/12
1 total stop
5h 02m total
Québec City to Illinois

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (C$ 112 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 23 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from Québec City to Illinois.

Search Deals

Price to beat on a one-way flight from Québec City to Illinois.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Québec City to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Tue 10/11

3:45 p.m.-5:54 p.m.

Nonstop3h 09m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 285

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Thu 12/11

3:45 p.m.-5:54 p.m.

Nonstop3h 09m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 287

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Thu 5/11

3:45 p.m.-5:54 p.m.

Nonstop3h 09m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 287

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Fri 13/11

3:45 p.m.-5:54 p.m.

Nonstop3h 09m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 287

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Sun 8/11

6:05 a.m.-11:07 a.m.

1 stop6h 02m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 296

Québec CityChicago

YQB Québec City - MDW Chicago Midway

YQBMDW

Québec City

Sun 18/10

11:00 a.m.-2:35 p.m.

1 stop4h 35m

Chicago Midway

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 299

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Sat 17/10

6:00 a.m.-6:39 p.m.

1 stop13h 39m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 306

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Wed 7/10

5:00 a.m.-11:21 a.m.

1 stop7h 21m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 349

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Sun 7/3

5:45 p.m.-10:58 p.m.

1 stop6h 13m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 356

Québec CityChicago

YQB Québec City - ORD Chicago O'Hare Intl

YQBORD

Québec City

Tue 6/10

5:00 a.m.-11:32 p.m.

2 stops19h 32m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 359

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 45 resultsSorted by cheapest first

...

Best time to book a flight from Québec City to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Québec City with our price prediction graph.

YQB-ORD

YQB-STL

YQB-MDW

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.

Cheapflights Insights

Everything you need to know about your flight from Québec City to Illinois

YQB-USIL

YQB-ORD

YQB-STL

YQB-MDW

What is the cheapest month to book a flight from Québec City to Illinois?

Currently, January is the cheapest month in which you can book a flight from Québec City to Illinois (average of C$ 369). Flying from Québec City to Illinois in March is currently the most expensive (average of C$ 725). 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 YQB to IL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Québec City to Illinois as you normally would.

Weekly flight availability from Québec City to Illinois

The most flights from YQB to USIL are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Illinois

Read through reviews of airlines operating flights from Québec City to Illinois, such as United Airlines,American Airlines, andAir Canada. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,205 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

United Airlines

7.4

Good

10,205 reviews

United Airlines

7.4

Good

10,205 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

American Airlines

7.1

Good

12,051 reviews

United Airlines

7.4

Good

10,205 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Air Canada

7.1

Good

11,617 reviews

United Airlines

7.4

Good

10,205 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Related info for your journey

What airport do you fly from for flights from Québec City to Illinois?
Most people fly from Québec City (YQB) if they book a flight from Québec City to Illinois. Québec City is conveniently located just 13.5 km from Québec City’s city centre.
How long is the flight from Québec City to Illinois?
Airlines like United Airlines, Air Canada, and Porter Airlines fly from Québec City to Illinois in about 2h 55m. The time it takes to get you to your destination can typically vary by up to 18h. Québec City and Illinois are separated by a distance of 1413 km. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from Québec City to Illinois?
When deciding which route to take from Québec City to Illinois consider Québec City - Chicago O'Hare Intl, Québec City - Chicago Midway or Québec City - Lambert-St Louis as they are the most popular.
What are the most reliable airlines from Québec City to Illinois?
No one likes to see their flight delayed. When booking a flight from Québec City to Illinois consider choosing Qatar Airways (79%), Air Canada (71%) or United Airlines (71%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Québec City to Illinois?
Looking at all options, your cheapest flight can be booked for C$ 433. While the most popular route (Québec City - Chicago O'Hare Intl) can be booked for C$ 492 on average, our data indicates C$ 604 when flying from Québec City to Illinois.
Can I find deals for flights from Québec City to Illinois that include hotel bookings?
Yes. In addition to deals on Québec City to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Québec City to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Québec City to Illinois.
Can I find deals for business class flights from Québec City to Illinois?
Yes. Cheapflights offers flight deals from Québec City to Illinois 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 Québec City to Illinois?
Currently, January is the cheapest month in which you can book a flight from Québec City to Illinois (average of C$ 369). Flying from Québec City to Illinois in March is currently the most expensive (average of C$ 725). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

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Alternative routes for Québec City to Illinois

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Top 2 airlines flying from Québec City to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 176	AverageC$ 653	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 248	AverageC$ 515	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Québec City to Illinois?

Cheapflights makes it easy to find Québec City to Illinois flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

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 Illinois from Québec City.

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

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

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

Yes, Cheapflights offers price alerts on Québec City to Illinois flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Québec City to Illinois from C$ 259

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Québec City to Illinois

Cheapest flights from Québec City to IllinoisExplore the most affordable flight options available from Québec City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Explore the most affordable flight options available from Québec City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Best flights from Québec City to IllinoisDiscover carefully curated flight deals from Québec City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Discover carefully curated flight deals from Québec City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Direct flights from Québec City to IllinoisExplore direct flight options from Québec City to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 September 2026.

Explore direct flight options from Québec City to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 September 2026.

Last-minute flights from Québec City to IllinoisDiscover last-minute flight deals from Québec City to Illinois. Data last updated 12 September 2026 and is based on user searches.

Discover last-minute flight deals from Québec City to Illinois. Data last updated 12 September 2026 and is based on user searches.

One-way flights from Québec City to IllinoisSearch for one-way flight options from Québec City to Illinois. Find affordable one-way fares based on user searches. Data last updated 12 September 2026.

Search for one-way flight options from Québec City to Illinois. Find affordable one-way fares based on user searches. Data last updated 12 September 2026.

Find flight deals from Québec City to Illinois

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Québec City to Illinois that are best for you.

Best time to book a flight from Québec City to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Québec City with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Québec City to Illinois?

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

Find hourly flight availability from Québec City to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Québec City to Illinois as you normally would.

Weekly flight availability from Québec City to Illinois

The most flights from YQB to USIL are scheduled on a Monday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Illinois

Read through reviews of airlines operating flights from Québec City to Illinois, such as United Airlines,American Airlines, andAir Canada. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Québec City to Illinois?

How long is the flight from Québec City to Illinois?

What are the most popular routes from Québec City to Illinois?

What are the most reliable airlines from Québec City to Illinois?

What are the cheapest flights from Québec City to Illinois?

Can I find deals for flights from Québec City to Illinois that include hotel bookings?

How can I find direct flights from Québec City to Illinois?

Can I find deals for business class flights from Québec City to Illinois?

What is the cheapest month to book a flight from Québec City to Illinois?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Québec City to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Québec City to Illinois by cabin class

Find flights from Québec City to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Québec City and Illinois flights

Browse other Québec City and Illinois flight options. Last updated on 12 September 2026.

Popular flight searches

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Québec City to Illinois flights

Consider these flights travelling from Québec City to Illinois.

Top 2 airlines flying from Québec City to Illinois

Fly with Cheapflights

How does Cheapflights help users find flights from Québec City to Illinois?

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

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

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

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Cheapest flights from Québec City to Illinois
Explore the most affordable flight options available from Québec City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2026.

Best flights from Québec City to Illinois
Discover carefully curated flight deals from Québec City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.

Direct flights from Québec City to Illinois
Explore direct flight options from Québec City to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 September 2026.

Last-minute flights from Québec City to Illinois
Discover last-minute flight deals from Québec City to Illinois. Data last updated 12 September 2026 and is based on user searches.

One-way flights from Québec City to Illinois
Search for one-way flight options from Québec City to Illinois. Find affordable one-way fares based on user searches. Data last updated 12 September 2026.