How many flights depart from Ottawa to Illinois on average per week?

As of August 2026, 88 flights take off from Ottawa and land in Illinois each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

How many flights depart from Ottawa to Illinois on average per day?

As of August 2026, there are 12 flights per day flying from Ottawa to Illinois. The most common time of day flights depart is 10:00a.m., with 76% of flights taking off at noon.

Which airlines fly to Illinois?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Illinois from Ottawa according to our data. Air Canada is the first choice among our users, with 70% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ottawa to Illinois?

United Airlines is the most popular carrier operating from Ottawa to Illinois

When did momondo last update prices for flights from Ottawa Airport to Illinois?

Prices for flights from Ottawa Airport to Illinois were last updated today.

How many operators does momondo search for flights from Ottawa Airport to Illinois?

As of August 2026, there are 2 operators available to choose from for flights from Ottawa Airport to Illinois.

How old do you have to be to fly from Ottawa Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ottawa Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 245 Cheap Flights from Ottawa to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:20 a.m. - 4:40 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

10h 20m1 stop Calgary

5:30 p.m. - 5:35 a.m.ORD Chicago O'Hare Intl-YOW Ottawa

11h 05m1 stop Calgary

C$ 410WestJet

Sun, 4 Oct - Sun, 11 Oct

7:20 a.m. - 4:40 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

10h 20m1 stop Calgary

5:30 p.m. - 5:35 a.m.ORD Chicago O'Hare Intl-YOW Ottawa

11h 05m1 stop Calgary

C$ 429WestJet

Sun, 4 Oct - Sun, 11 Oct

9:15 a.m. - 2:35 p.m.YOW Ottawa-MDW Chicago Midway

6h 20m1 stop Toronto Island

11:45 a.m. - 5:52 p.m.MDW Chicago Midway-YOW Ottawa

5h 07m1 stop Toronto Island

C$ 467Porter Airlines

Sat, 3 Oct - Mon, 5 Oct

7:00 a.m. - 3:20 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

9h 20m1 stop Fort Lauderdale

5:30 p.m. - 5:35 a.m.ORD Chicago O'Hare Intl-YOW Ottawa

11h 05m1 stop Calgary

C$ 469Multiple Airlines

Sat, 19 Sep - Sun, 20 Sep

2:45 p.m. - 6:41 p.m.YOW Ottawa-STL Lambert-St Louis

4h 56m1 stop Montreal Pierre Elliott Trudeau Intl

2:40 p.m. - 9:20 p.m.STL Lambert-St Louis-YOW Ottawa

5h 40m1 stop Toronto Pearson Intl

C$ 674Air Canada

Mon, 28 Sep - Wed, 30 Sep

9:10 a.m. - 3:26 p.m.YOW Ottawa-STL Lambert-St Louis

7h 16m1 stop Toronto Pearson Intl

4:05 p.m. - 11:55 p.m.STL Lambert-St Louis-YOW Ottawa

6h 50m1 stop Toronto Pearson Intl

C$ 677Air Canada

Tue, 27 Oct - Sun, 1 Nov

3:10 p.m. - 6:41 p.m.YOW Ottawa-STL Lambert-St Louis

4h 31m1 stop Montreal Pierre Elliott Trudeau Intl

8:55 a.m. - 3:10 p.m.STL Lambert-St Louis-YOW Ottawa

5h 15m1 stop Toronto Pearson Intl

C$ 731Air Canada

Thu, 10 Sep - Wed, 16 Sep

6:00 a.m. - 3:38 p.m.YOW Ottawa-STL Lambert-St Louis

10h 38m3 stops Washington, D.C. Dulles Intl Indianapolis Chicago O'Hare Intl

6:00 a.m. - 5:16 p.m.STL Lambert-St Louis-YOW Ottawa

10h 16m1 stop Chicago O'Hare Intl

C$ 751United Airlines

Tue, 15 Sep - Thu, 24 Sep

5:20 p.m. - 10:00 p.m.YOW Ottawa-STL Lambert-St Louis

5h 40m1 stop Chicago O'Hare Intl

8:00 a.m. - 5:16 p.m.STL Lambert-St Louis-YOW Ottawa

8h 16m1 stop Chicago O'Hare Intl

C$ 751United Airlines

Tue, 15 Sep - Thu, 24 Sep

6:05 a.m. - 3:38 p.m.YOW Ottawa-STL Lambert-St Louis

10h 33m2 stops Newark Chicago O'Hare Intl

8:00 a.m. - 5:16 p.m.STL Lambert-St Louis-YOW Ottawa

8h 16m1 stop Chicago O'Hare Intl

C$ 751United Airlines

Tue, 15 Sep - Thu, 24 Sep

Cheap last-minute flights

Enter your travel dates to find the best prices.

7:00 a.m. - 10:47 p.m.YOW Ottawa-MDW Chicago Midway

16h 47m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson

10:25 a.m. - 5:54 p.m.MDW Chicago Midway-YOW Ottawa

6h 29m1 stop Toronto Island

C$ 1,054Multiple Airlines

Sat, 22 Aug - Mon, 24 Aug

7:00 a.m. - 11:08 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

17h 08m1 stop Orlando

5:59 p.m. - 5:23 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

22h 24m2 stops Orlando Boston Logan Intl

C$ 1,082Multiple Airlines

Sat, 22 Aug - Sat, 29 Aug

6:25 p.m. - 2:35 p.m.YOW Ottawa-MDW Chicago Midway

21h 10m1 stop Toronto Pearson Intl

3:15 p.m. - 8:04 p.m.MDW Chicago Midway-YOW Ottawa

3h 49m1 stop Toronto Island

C$ 1,084Multiple Airlines

Sun, 23 Aug - Tue, 25 Aug

7:00 a.m. - 11:08 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

17h 08m1 stop Orlando

1:59 p.m. - 12:25 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

21h 26m2 stops Atlanta Hartsfield-Jackson Newark

C$ 1,111Multiple Airlines

Sat, 22 Aug - Wed, 26 Aug

7:00 a.m. - 8:08 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

14h 08m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson

5:30 p.m. - 5:35 a.m.ORD Chicago O'Hare Intl-YOW Ottawa

11h 05m1 stop Calgary

C$ 1,123Multiple Airlines

Sat, 22 Aug - Mon, 24 Aug

6:25 a.m. - 7:44 a.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 19mdirect

6:00 a.m. - 4:38 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

9h 38m1 stop Newark

C$ 1,299United Airlines

Sat, 22 Aug - Wed, 26 Aug

10:37 a.m. - 12:00 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 23mdirect

10:25 a.m. - 4:38 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

5h 13m1 stop Newark

C$ 1,323Air Canada

Sat, 22 Aug - Sat, 29 Aug

6:25 a.m. - 7:44 a.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 19mdirect

1:55 p.m. - 5:16 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 21mdirect

C$ 1,323Air Canada

Sun, 23 Aug - Tue, 25 Aug

5:20 p.m. - 6:46 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 26mdirect

7:25 a.m. - 1:17 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

4h 52m1 stop Toronto Island

C$ 1,323Air Canada

Sun, 23 Aug - Tue, 25 Aug

10:37 a.m. - 12:00 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 23mdirect

6:21 p.m. - 9:35 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 14mdirect

C$ 1,323Air Canada

Sat, 22 Aug - Sat, 29 Aug

Cheap direct flights

Enter your travel dates to find the best prices.

5:20 p.m. - 6:46 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 26mdirect

10:40 a.m. - 1:59 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 19mdirect

C$ 924Air Canada

Tue, 22 Sep - Mon, 28 Sep

5:20 p.m. - 6:46 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 26mdirect

10:40 a.m. - 1:59 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 19mdirect

C$ 924Air Canada

Sun, 20 Sep - Fri, 25 Sep

6:25 a.m. - 7:44 a.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 19mdirect

1:55 p.m. - 5:16 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 21mdirect

C$ 960Air Canada

Tue, 15 Sep - Tue, 22 Sep

6:25 a.m. - 7:44 a.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 19mdirect

10:40 a.m. - 1:59 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 19mdirect

C$ 960Air Canada

Wed, 9 Sep - Wed, 16 Sep

5:20 p.m. - 6:46 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 26mdirect

10:40 a.m. - 1:59 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 19mdirect

C$ 974United Airlines

Sat, 19 Sep - Tue, 22 Sep

5:20 p.m. - 6:46 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 26mdirect

10:40 a.m. - 1:59 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 19mdirect

C$ 974United Airlines

Fri, 9 Oct - Mon, 12 Oct

10:37 a.m. - 12:00 p.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 23mdirect

6:21 p.m. - 9:35 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 14mdirect

C$ 974Lufthansa

Sun, 4 Oct - Sun, 11 Oct

6:15 a.m. - 8:00 a.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 45mdirect

10:57 a.m. - 2:09 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 12mdirect

C$ 974United Airlines

Sun, 1 Nov - Thu, 5 Nov

6:25 a.m. - 7:44 a.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 19mdirect

1:55 p.m. - 5:16 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 21mdirect

C$ 978Lufthansa

Thu, 17 Sep - Sun, 20 Sep

6:25 a.m. - 7:44 a.m.YOW Ottawa-ORD Chicago O'Hare Intl

2h 19mdirect

10:40 a.m. - 1:59 p.m.ORD Chicago O'Hare Intl-YOW Ottawa

2h 19mdirect

C$ 1,072Multiple Airlines

Thu, 15 Oct - Mon, 19 Oct

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Air Canada flights from Ottawa to Illinois

Our best Air Canada deals on Ottawa to Illinois flight tickets

Air Canada

28 Sep

YOW2:45 p.m.Ottawa

4h 56m

1 stop

STL6:41 p.m.Lambert-St Louis

30 Sep

STL2:40 p.m.Lambert-St Louis

5h 40m

1 stop

YOW9:20 p.m.Ottawa

C$ 674

Air Canada

27 Oct

YOW9:10 a.m.Ottawa

7h 16m

1 stop

STL3:26 p.m.Lambert-St Louis

1 Nov

STL4:05 p.m.Lambert-St Louis

6h 50m

1 stop

YOW11:55 p.m.Ottawa

C$ 677

Air Canada

10 Sep

YOW3:10 p.m.Ottawa

4h 31m

1 stop

STL6:41 p.m.Lambert-St Louis

16 Sep

STL8:55 a.m.Lambert-St Louis

5h 15m

1 stop

YOW3:10 p.m.Ottawa

C$ 731

WestJet flights from Ottawa to Illinois

Our best WestJet deals on Ottawa to Illinois flight tickets

WestJet

4 Oct

YOW7:20 a.m.Ottawa

10h 20m

1 stop

ORD4:40 p.m.Chicago O'Hare Intl

11 Oct

ORD5:30 p.m.Chicago O'Hare Intl

11h 05m

1 stop

YOW5:35 a.m.Ottawa

C$ 410

WestJet

4 Oct

YOW7:20 a.m.Ottawa

10h 20m

1 stop

ORD4:40 p.m.Chicago O'Hare Intl

11 Oct

ORD5:30 p.m.Chicago O'Hare Intl

11h 05m

1 stop

YOW5:35 a.m.Ottawa

C$ 429

WestJet

2 Oct

YOW7:20 a.m.Ottawa

10h 20m

1 stop

ORD4:40 p.m.Chicago O'Hare Intl

9 Oct

ORD5:30 p.m.Chicago O'Hare Intl

11h 05m

1 stop

YOW5:35 a.m.Ottawa

C$ 499

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Sun 4/10

7:20 a.m.-4:40 p.m.

1 stop10h 20m

Chicago O'Hare Intl

Sun 11/10

5:30 p.m.-5:35 a.m.

1 stop11h 05m

C$ 410

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Sun 4/10

7:20 a.m.-4:40 p.m.

1 stop10h 20m

Chicago O'Hare Intl

Sun 11/10

5:30 p.m.-5:35 a.m.

1 stop11h 05m

C$ 429

OttawaChicago

YOW Ottawa - MDW Chicago Midway

YOWMDW

Ottawa

Sat 3/10

9:15 a.m.-2:35 p.m.

1 stop6h 20m

Chicago Midway

Mon 5/10

11:45 a.m.-5:52 p.m.

1 stop5h 07m

C$ 467

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Sat 19/9

7:00 a.m.-3:20 p.m.

1 stop9h 20m

Chicago O'Hare Intl

Sun 20/9

5:30 p.m.-5:35 a.m.

1 stop11h 05m

C$ 469

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Mon 28/9

2:45 p.m.-6:41 p.m.

1 stop4h 56m

Lambert-St Louis

Wed 30/9

2:40 p.m.-9:20 p.m.

1 stop5h 40m

C$ 674

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Tue 27/10

9:10 a.m.-3:26 p.m.

1 stop7h 16m

Lambert-St Louis

Sun 1/11

4:05 p.m.-11:55 p.m.

1 stop6h 50m

C$ 677

Quickest round-trip

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Thu 10/9

3:10 p.m.-6:41 p.m.

1 stop4h 31m

Lambert-St Louis

Wed 16/9

8:55 a.m.-3:10 p.m.

1 stop5h 15m

C$ 731

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Tue 15/9

6:00 a.m.-3:38 p.m.

3 stops10h 38m

Lambert-St Louis

Thu 24/9

6:00 a.m.-5:16 p.m.

1 stop10h 16m

C$ 751

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Tue 15/9

5:20 p.m.-10:00 p.m.

1 stop5h 40m

Lambert-St Louis

Thu 24/9

8:00 a.m.-5:16 p.m.

1 stop8h 16m

C$ 751

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Tue 15/9

6:05 a.m.-3:38 p.m.

2 stops10h 33m

Lambert-St Louis

Thu 24/9

8:00 a.m.-5:16 p.m.

1 stop8h 16m

C$ 751

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ottawa to Illinois

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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

In general, September is the cheapest month to fly from Ottawa to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 536. If you don’t want to visit Illinois in September, then you should wait until March to fly from Ottawa, when ticket prices are also cheap, with an average price of C$ 562.

What is the cheapest day to depart on your flight to Illinois?

According to our data, Saturday is the cheapest day to fly to Illinois from Ottawa. The lowest ticket price found for a Saturday departure recently was C$ 769. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Illinois is Monday, with ticket prices averaging around C$ 991.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Ottawa to Illinois during this time can be as low as C$ 788. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 841 on average. Flights to Illinois from Ottawa in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Ottawa to Illinois flight route?

Fly from Ottawa to Chicago O'Hare Intl for the best Ottawa - Illinois flight prices

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

There are 4 cabin classes available to choose from on Ottawa to Illinois 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 Ottawa to Illinois flights?

You could potentially save up to 42% on your flight if you consider stops on a Ottawa to Illinois flight.

Cheap Ottawa to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to Illinois

Best price found	C$ 245
Fastest flight time	2h 19m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Ottawa in the past 72 hours is C$ 245. The best round-trip flight deal from Ottawa to Illinois found on momondo in the last 72 hours is C$ 410.

The fastest flight from Ottawa to Illinois takes 2h 19m

Direct flights go from Ottawa to Illinois every day.

There are 98 airports in Illinois. From Ottawa there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from Ottawa to Illinois

When did momondo last update prices for flights from Ottawa Airport to Illinois?
Prices for flights from Ottawa Airport to Illinois were last updated today.
How many operators does momondo search for flights from Ottawa Airport to Illinois?
As of August 2026, there are 2 operators available to choose from for flights from Ottawa Airport to Illinois.
How old do you have to be to fly from Ottawa Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ottawa Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Ottawa to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Ottawa to Illinois is Embraer 175 (Enhanced Winglets), representing 44.64% of all bookings. The subsequent popular models are Airbus A319 at 32.62%, Embraer 195 E2 at 8.58%, and Boeing 777-300ER at 2.15%.

Best airlines flying from Ottawa to Illinois

Compare and see reviews for airlines that fly from Ottawa to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 415	Free Cancellation	Rating 7.1 11,507 reviews		Search Air Canada flights
United Airlines	PriceFrom C$ 473	Free Cancellation	Rating 7.4 10,102 reviews		Search United Airlines flights

Why use momondo?

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

Finding the right flight to Illinois from Ottawa is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

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

Yes. All flights to Illinois from Ottawa on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Ottawa.

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

Price alerts on flights to Illinois from Ottawa are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Popular Cities in Illinois

Flights to Fort Lauderdalefrom C$ 209

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Flights to Las Vegasfrom C$ 247

Flights to San Franciscofrom C$ 237

Flights to Miamifrom C$ 411

Flights to Honolulufrom C$ 427

Flights to Houstonfrom C$ 332

Flights to Phoenixfrom C$ 227

Flights to Chicagofrom C$ 242

Flights to Tampafrom C$ 230

Cheap flights from Ottawa to Illinois from C$ 245

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to Illinois departing on 3/10. 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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Air Canada flights from Ottawa to Illinois

Our best Air Canada deals on Ottawa to Illinois flight tickets

WestJet flights from Ottawa to Illinois

Our best WestJet deals on Ottawa to Illinois flight tickets

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How to get the cheapest flight ticket from Ottawa to Illinois

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

What is the cheapest Ottawa to Illinois flight route?

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

Can stopping save me money on Ottawa to Illinois flights?

What is the cheapest airline that flies from Ottawa to Illinois?

Which airlines fly to Illinois?

How many flights depart from Ottawa to Illinois on average per day?

How many flights depart from Ottawa to Illinois on average per week?

Cheap Ottawa to Illinois flight deals and tips

Best price found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from Ottawa to Illinois

Best airlines flying from Ottawa to Illinois

Compare and see reviews for airlines that fly from Ottawa to Illinois with momondo

Why use momondo?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular Cities in Illinois

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

Illinois flight routes

According to popular flight searches on momondo this year

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