How long is the flight from Illinois to Thunder Bay?

Departing from Illinois to Thunder Bay will take you 5h 20m. Illinois and Thunder Bay are separated by a distance of 742 km.

In terms of precipitation, rainfall in Thunder Bay ranges from 10.0 - 90.0 mm per month. July is typically the wettest month, when rainfall can reach 90.0 mm. February is typically the driest time to visit Thunder Bay when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Thunder Bay, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -14.0 C).

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

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

What airport do you fly into for flights to Thunder Bay from Illinois?

Thunder Bay (YQT) is the airport you will fly into if you book a flight from Illinois to Thunder Bay. It is only a 5.6 km journey from Thunder Bay (YQT) to Thunder Bay’s city centre.

Can I find deals for flights from Illinois to Thunder Bay that include hotel bookings?

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

How can I find direct flights from Illinois to Thunder Bay?

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

Can I find deals for business class flights from Illinois to Thunder Bay?

Yes. Cheapflights offers flight deals from Illinois to Thunder Bay 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$ 440+ Cheap Flights from Illinois to Thunder Bay

Cheap flight deals from Illinois to Thunder Bay

Enter your travel dates to find the best prices.

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Cheapest flights from Illinois to Thunder Bay
Explore the most affordable flight options available from Illinois to Thunder Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Sat 17/1011:45 a.m. -

1 stop5h 20m

Sat 24/106:00 a.m. -

1 stop6h 00m

Deal found 3/9C$ 561

Sat 3/1011:45 a.m. -

1 stop6h 35m

Sat 10/101:50 p.m. -

1 stop22h 10m

Deal found 3/9C$ 572

Thu 24/93:20 p.m. -

1 stop5h 25m

Mon 28/96:00 a.m. -

1 stop6h 00m

Deal found 4/9C$ 776

Sat 17/1011:45 a.m. -

1 stop5h 20m

Sat 24/1010:10 a.m. -

2 stops24h 22m

Deal found 2/9C$ 845

Thu 24/93:20 p.m. -

1 stop24h 15m

Sun 27/96:00 a.m. -

1 stop6h 00m

Deal found 4/9C$ 850

Sat 3/106:40 p.m. -

2 stops13h 15m

Sat 10/101:50 p.m. -

1 stop22h 10m

Deal found 3/9C$ 943

Fri 18/911:45 a.m. -

1 stop6h 35m

Mon 21/96:00 a.m. -

1 stop6h 00m

Deal found 4/9C$ 1,080

Tue 22/911:45 a.m. -

1 stop6h 35m

Sat 26/98:15 a.m. -

1 stop7h 20m

Deal found 3/9C$ 1,180

Find flight deals from Illinois to Thunder Bay

Round-trip from	C$ 561
One-way from	C$ 440

Porter Airlines
17/10-24/10
2 total stops
11h 20m total
Illinois to Thunder Bay

Search Deals

Porter Airlines
20/9-31/12
1 total stop
29h 25m total
Illinois to Thunder Bay

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Sun 20/9

3:20 p.m.-9:45 p.m.

1 stop29h 25m

Thunder Bay

Wed 31/12

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

Nonstop0h 00m

C$ 440

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Sun 20/9

3:20 p.m.-6:45 p.m.

3 stops50h 25m

Thunder Bay

Wed 31/12

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

Nonstop0h 00m

C$ 516

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Sat 17/10

11:45 a.m.-6:05 p.m.

1 stop5h 20m

Thunder Bay

Sat 24/10

6:00 a.m.-11:00 a.m.

1 stop6h 00m

C$ 562

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Fri 11/9

6:46 p.m.-8:55 a.m.

3 stops37h 09m

Thunder Bay

Wed 31/12

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

Nonstop0h 00m

C$ 577

Quickest round-trip

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Fri 11/9

3:20 p.m.-9:45 p.m.

1 stop5h 25m

Thunder Bay

Wed 31/12

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

Nonstop0h 00m

C$ 690

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Thu 24/9

3:20 p.m.-9:45 p.m.

1 stop5h 25m

Thunder Bay

Mon 28/9

6:00 a.m.-11:00 a.m.

1 stop6h 00m

C$ 776

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Sat 17/10

11:45 a.m.-6:05 p.m.

1 stop5h 20m

Thunder Bay

Sat 24/10

10:10 a.m.-9:32 a.m.

2 stops24h 22m

C$ 845

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Thu 24/9

3:20 p.m.-4:35 p.m.

1 stop24h 15m

Thunder Bay

Sun 27/9

6:00 a.m.-11:00 a.m.

1 stop6h 00m

C$ 850

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Sat 3/10

11:45 a.m.-7:20 p.m.

1 stop6h 35m

Thunder Bay

Sat 10/10

11:30 a.m.-2:35 p.m.

3 stops28h 05m

C$ 1,162

ChicagoThunder Bay

MDW Chicago Midway - YQT Thunder Bay

MDWYQT

Chicago Midway

Tue 22/9

11:45 a.m.-7:20 p.m.

1 stop6h 35m

Thunder Bay

Sat 26/9

8:15 a.m.-2:35 p.m.

1 stop7h 20m

C$ 1,180

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/8

Showing 1-10 of 11 resultsSorted by cheapest first

Best time to book a flight from Illinois to Thunder Bay

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

MDW-YQT

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 Illinois to Thunder Bay

USIL-YQT

MDW-YQT

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to Thunder Bay from Illinois?
Thunder Bay (YQT) is the airport you will fly into if you book a flight from Illinois to Thunder Bay. It is only a 5.6 km journey from Thunder Bay (YQT) to Thunder Bay’s city centre.
How long is the flight from Illinois to Thunder Bay?
Departing from Illinois to Thunder Bay will take you 5h 20m. Illinois and Thunder Bay are separated by a distance of 742 km.
Can I find deals for flights from Illinois to Thunder Bay that include hotel bookings?
Yes. In addition to deals on Illinois to Thunder Bay flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Thunder Bay?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Thunder Bay.
Can I find deals for business class flights from Illinois to Thunder Bay?
Yes. Cheapflights offers flight deals from Illinois to Thunder Bay by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Millions of users choose and trust Cheapflights to book the best flight deals from Illinois to Thunder Bay for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Illinois to Thunder Bay, users can toggle the no change fees filter when performing a flight search.

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Cheap flights from Illinois to Thunder Bay from C$ 440

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 20/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Thunder Bay

Cheapest flights from Illinois to Thunder BayExplore the most affordable flight options available from Illinois to Thunder Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Explore the most affordable flight options available from Illinois to Thunder Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Best flights from Illinois to Thunder BayDiscover carefully curated flight deals from Illinois to Thunder Bay that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 4 September 2026.

Discover carefully curated flight deals from Illinois to Thunder Bay that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 4 September 2026.

Last-minute flights from Illinois to Thunder BayDiscover last-minute flight deals from Illinois to Thunder Bay. Data last updated 4 September 2026 and is based on user searches.

Discover last-minute flight deals from Illinois to Thunder Bay. Data last updated 4 September 2026 and is based on user searches.

One-way flights from Illinois to Thunder BaySearch for one-way flight options from Illinois to Thunder Bay. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.

Search for one-way flight options from Illinois to Thunder Bay. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.

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

Best time to book a flight from Illinois to Thunder Bay

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

Cheapflights Insights

Related info for your journey

What airport do you fly into for flights to Thunder Bay from Illinois?

How long is the flight from Illinois to Thunder Bay?

Can I find deals for flights from Illinois to Thunder Bay that include hotel bookings?

How can I find direct flights from Illinois to Thunder Bay?

Can I find deals for business class flights from Illinois to Thunder Bay?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Thunder Bay

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

Complete your trip

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

Direct flights to Ontario

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

Search flights from Illinois to Thunder Bay by cabin class

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Illinois and Thunder Bay flights

Browse other Illinois and Thunder Bay flight options. Last updated on 4 September 2026.

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Other flights to Thunder Bay

Explore flights to Thunder Bay departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 4 September 2026.

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Cheapest flights from Illinois to Thunder Bay
Explore the most affordable flight options available from Illinois to Thunder Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.

Best flights from Illinois to Thunder Bay
Discover carefully curated flight deals from Illinois to Thunder Bay that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 4 September 2026.

Last-minute flights from Illinois to Thunder Bay
Discover last-minute flight deals from Illinois to Thunder Bay. Data last updated 4 September 2026 and is based on user searches.

One-way flights from Illinois to Thunder Bay
Search for one-way flight options from Illinois to Thunder Bay. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.