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

Porter Airlines is the most popular carrier operating from Ottawa to Chicago

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

As of November 2025, 11 flights take off from Ottawa and land in Chicago each day. The most common flight departure time for this route is 11:00a.m., with 73% of daily flights taking off at noon.

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

79 flights are operational weekly from Ottawa to Chicago as of November 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

Which airlines fly to Chicago?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Chicago from Ottawa according to our data. Air Canada is the first choice among our users, with 63% of people opting to fly with this airline when travelling to Chicago. Keep in mind that there are 4 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ottawa Airport to Chicago refresh daily.

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

The number of operators available for flights from Ottawa Airport to Chicago is 3 as of November 2025.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Chicago.

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

The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 207 Cheap Flights from Ottawa to Chicago in 2025/26

1 adult

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Find the cheapest flights from Ottawa to Chicago

Round-trip

One-way

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Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 a.m. - 12:16 a.m.YOW-ORD

18h 16m3 stops

10:39 a.m. - 11:58 p.m.ORD-YOW

12h 19m1 stop

C$ 333Multiple Airlines

Find Deal

Wed, 7 Jan - Sat, 10 Jan

7:00 a.m. - 12:16 a.m.YOW-ORD

18h 16m3 stops

5:15 a.m. - 11:58 p.m.ORD-YOW

17h 43m2 stops

C$ 372Multiple Airlines

Find Deal

Wed, 7 Jan - Sat, 10 Jan

7:00 a.m. - 8:30 p.m.YOW-ORD

14h 30m1 stop

8:22 p.m. - 5:25 p.m.ORD-YOW

20h 03m1 stop

C$ 382Multiple Airlines

Find Deal

Thu, 8 Jan - Thu, 15 Jan

9:30 a.m. - 10:41 a.m.YOW-ORD

26h 11m1 stop

7:29 a.m. - 5:25 p.m.ORD-YOW

8h 56m1 stop

C$ 392Multiple Airlines

Find Deal

Wed, 21 Jan - Tue, 27 Jan

7:00 a.m. - 8:30 p.m.YOW-ORD

14h 30m1 stop

12:44 p.m. - 12:42 a.m.ORD-YOW

34h 58m2 stops

C$ 395Multiple Airlines

Find Deal

Thu, 8 Jan - Thu, 15 Jan

7:00 a.m. - 12:16 a.m.YOW-ORD

18h 16m3 stops

7:29 a.m. - 3:04 p.m.ORD-YOW

30h 35m3 stops

C$ 404Multiple Airlines

Find Deal

Wed, 7 Jan - Sat, 10 Jan

12:10 p.m. - 3:20 p.m.YOW-MDW

4h 10m1 stop

4:15 p.m. - 10:29 p.m.MDW-YOW

5h 14m1 stop

C$ 405Porter Airlines

Find Deal

Thu, 19 Mar - Mon, 23 Mar

10:00 a.m. - 4:58 p.m.YOW-ORD

31h 58m2 stops

7:29 a.m. - 5:25 p.m.ORD-YOW

8h 56m1 stop

C$ 405Multiple Airlines

Find Deal

Wed, 21 Jan - Tue, 27 Jan

7:00 a.m. - 10:05 a.m.YOW-MDW

4h 05m1 stop

4:15 p.m. - 8:54 p.m.MDW-YOW

3h 39m1 stop

C$ 409Porter Airlines

Find Deal

Thu, 8 Jan - Sun, 11 Jan

7:00 a.m. - 11:22 a.m.YOW-ORD

29h 22m1 stop

4:38 p.m. - 5:25 p.m.ORD-YOW

23h 47m1 stop

C$ 413Multiple Airlines

Find Deal

Wed, 7 Jan - Sat, 10 Jan

WestJet flights from Ottawa to Chicago

Our best WestJet deals on Ottawa to Chicago flight tickets

WestJet

7 May

YOW7:45 a.m.Ottawa

9h 58m

1 stop

ORD4:43 p.m.Chicago O'Hare Intl

12 May

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

12h 25m

1 stop

YOW6:55 a.m.Ottawa

C$ 454

Find similar

WestJet

7 May

YOW5:15 p.m.Ottawa

24h 28m

2 stops

ORD4:43 p.m.Chicago O'Hare Intl

12 May

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

30h 10m

1 stop

YOW12:40 a.m.Ottawa

C$ 498

Find similar

WestJet

2 Dec

YOW5:40 a.m.Ottawa

9h 10m

2 stops

ORD1:50 p.m.Chicago O'Hare Intl

7 Dec

ORD12:35 p.m.Chicago O'Hare Intl

11h 07m

2 stops

YOW12:42 a.m.Ottawa

C$ 858

Find similar

United Airlines flights from Ottawa to Chicago

Our best United Airlines deals on Ottawa to Chicago flight tickets

United Airlines

1 Dec

YOW5:14 p.m.Ottawa

2h 41m

ORD6:55 p.m.Chicago O'Hare Intl

3 Dec

ORD11:00 a.m.Chicago O'Hare Intl

9h 56m

1 stop

YOW9:56 p.m.Ottawa

C$ 1,189

Find similar

United Airlines

1 Dec

YOW7:30 p.m.Ottawa

14h 27m

2 stops

ORD8:57 a.m.Chicago O'Hare Intl

3 Dec

ORD7:10 a.m.Chicago O'Hare Intl

10h 45m

2 stops

YOW6:55 p.m.Ottawa

C$ 1,192

Find similar

United Airlines

1 Dec

YOW6:00 a.m.Ottawa

15h 07m

1 stop

ORD8:07 p.m.Chicago O'Hare Intl

3 Dec

ORD11:00 a.m.Chicago O'Hare Intl

9h 56m

1 stop

YOW9:56 p.m.Ottawa

C$ 1,196

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 7/1

7:00 a.m.-12:16 a.m.

3 stops18h 16m

Chicago O'Hare Intl

Sat 10/1

10:39 a.m.-11:58 p.m.

1 stop12h 19m

C$ 333

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 7/1

7:00 a.m.-12:16 a.m.

3 stops18h 16m

Chicago O'Hare Intl

Sat 10/1

5:15 a.m.-11:58 p.m.

2 stops17h 43m

C$ 372

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 8/1

7:00 a.m.-8:30 p.m.

1 stop14h 30m

Chicago O'Hare Intl

Thu 15/1

8:22 p.m.-5:25 p.m.

1 stop20h 03m

C$ 382

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 21/1

9:30 a.m.-10:41 a.m.

1 stop26h 11m

Chicago O'Hare Intl

Tue 27/1

7:29 a.m.-5:25 p.m.

1 stop8h 56m

C$ 392

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 8/1

7:00 a.m.-8:30 p.m.

1 stop14h 30m

Chicago O'Hare Intl

Thu 15/1

12:44 p.m.-12:42 a.m.

2 stops34h 58m

C$ 395

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 7/1

7:00 a.m.-12:16 a.m.

3 stops18h 16m

Chicago O'Hare Intl

Sat 10/1

7:29 a.m.-3:04 p.m.

3 stops30h 35m

C$ 404

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 19/3

12:10 p.m.-3:20 p.m.

1 stop4h 10m

Chicago Midway

Mon 23/3

4:15 p.m.-10:29 p.m.

1 stop5h 14m

C$ 405

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 21/1

10:00 a.m.-4:58 p.m.

2 stops31h 58m

Chicago O'Hare Intl

Tue 27/1

7:29 a.m.-5:25 p.m.

1 stop8h 56m

C$ 405

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 8/1

7:00 a.m.-10:05 a.m.

1 stop4h 05m

Chicago Midway

Sun 11/1

4:15 p.m.-8:54 p.m.

1 stop3h 39m

C$ 409

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 7/1

7:00 a.m.-11:22 a.m.

1 stop29h 22m

Chicago O'Hare Intl

Sat 10/1

4:38 p.m.-5:25 p.m.

1 stop23h 47m

C$ 413

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 Chicago

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 typical price of a round-trip flight between Ottawa and Chicago?

What is the cheapest month to fly to Chicago?

The month of June is another great option to travel to Chicago, with average flight prices from Ottawa averaging around C$ 505.

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

The cheapest day to depart on your flight to Chicago is on a Saturday when prices can be found for as low as C$ 784. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 941. These prices are subject to change though, so be sure to set up a Price Alert for flights to Chicago.

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

At noon is the cheapest time of day to fly from Ottawa to Chicago when you can find flight prices for as low as C$ 517. Flying to Chicago at noon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Chicago, so prices are often more expensive at around C$ 890 per ticket.

What is the cheapest Ottawa to Chicago flight route?

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

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

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

You could potentially save up to 37% on your flight if you consider stops on a Ottawa to Chicago flight.

How have Ottawa to Chicago flight prices changed over time?

As of November 2025, prices for Ottawa to Chicago flights are approximately 23% cheaper when compared to flights at the same time last year.

When to book flights from Ottawa to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to Chicago according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ottawa to Chicago (YOW to CHI) flight deals and tips

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

Best price found	C$ 288
Fastest flight time	2h 08m
Direct flights	Every day
Airports in Chicago	1 airport

The best one-way flight to Chicago from Ottawa in the past 72 hours is C$ 288. The best round-trip flight deal from Ottawa to Chicago found on momondo in the last 72 hours is C$ 640.

The fastest flight from Ottawa to Chicago takes 2h 08m

Direct flights go from Ottawa to Chicago every day.

There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)

Search flight deals

How far is Ottawa to Chicago by plane?
A flight from Ottawa to Chicago will travel around 1035.5 km. In terms of flight time, this usually takes a little over 4h 05m.
When did momondo last update prices for flights from Ottawa Airport to Chicago?
Prices for flights from Ottawa Airport to Chicago refresh daily.
How many operators does momondo search for flights from Ottawa Airport to Chicago?
The number of operators available for flights from Ottawa Airport to Chicago is 3 as of November 2025.
How old do you have to be to fly from Ottawa Airport to Chicago?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to Chicago.
What documentation or ID do you need to fly to Chicago?
The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ottawa to Chicago?
Based on momondo bookings for flights between Ottawa and Chicago, the leading plane model is Embraer 175 (Enhanced Winglets), making up 47.02% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet CRJ-550 with 19.05%, Embraer 195 E2 with 15.77%, and Boeing 777-300ER with 4.46%.
What is the most popular airline from Ottawa to Chicago?
momondo data reveals that the most frequently booked airline on the route from Ottawa to Chicago is Porter Airlines, representing 44% of all bookings. The subsequent popular airlines are United Airlines at 30% and Air Canada at 26%.

Best airlines flying from Ottawa to Chicago

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

Airline	Rating	Free Cancellation	Price
Porter Airlines	PriceFrom C$ 392	Free Cancellation	Rating 8.0 394 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 475	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 514	Free Cancellation	Rating 7.1 10,476 reviews	Search Air Canada flights

United Airlines Flights From Ottawa to Chicago
Across 20 United Airlines flights from Ottawa to Chicago this week, the average price was C$ 682, with the best United Airlines deals starting from C$ 475 round-trip. 9,046 users have rated United Airlines on momondo, with an average score of 7.4/10.
Air Canada Flights From Ottawa to Chicago
Across 10,476 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from Ottawa to Chicago about 20 times each week, with ticket deals ranging from C$ 514 to C$ 656. Price data is based on momondo searches in the last 72 hours.

Munster

Hammond

Merrillville

Why use momondo?

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

Finding the right flight to Chicago 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 Chicago quick and easy, saving you time and money.

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

All flight searches from Ottawa to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

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 Chicago from Ottawa.

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

Yes. momondo can track prices for Ottawa to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Chicago 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.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Chicago Midway Airport

Chicago O'Hare Intl Airport

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Cheap flights from Ottawa to Chicago from C$ 207

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 Chicago departing on 15/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ottawa to Chicago

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

WestJet flights from Ottawa to Chicago

Our best WestJet deals on Ottawa to Chicago flight tickets

United Airlines flights from Ottawa to Chicago

Our best United Airlines deals on Ottawa to Chicago flight tickets

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Use the filters below to find and compare flights from Ottawa to Chicago that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Ottawa to Chicago

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

What is the typical price of a round-trip flight between Ottawa and Chicago?

What is the cheapest month to fly to Chicago?

The month of June is another great option to travel to Chicago, with average flight prices from Ottawa averaging around C$ 505.

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

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

What is the cheapest Ottawa to Chicago flight route?

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

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

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

You could potentially save up to 37% on your flight if you consider stops on a Ottawa to Chicago flight.

How have Ottawa to Chicago flight prices changed over time?

As of November 2025, prices for Ottawa to Chicago flights are approximately 23% cheaper when compared to flights at the same time last year.

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

Porter Airlines is the most popular carrier operating from Ottawa to Chicago

Which airlines fly to Chicago?

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

As of November 2025, 11 flights take off from Ottawa and land in Chicago each day. The most common flight departure time for this route is 11:00a.m., with 73% of daily flights taking off at noon.

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

79 flights are operational weekly from Ottawa to Chicago as of November 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

When to book flights from Ottawa to Chicago

Cheap Ottawa to Chicago (YOW to CHI) flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in Chicago

How far is Ottawa to Chicago by plane?

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

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

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

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

What is the most popular plane model from Ottawa to Chicago?

What is the most popular airline from Ottawa to Chicago?

Best airlines flying from Ottawa to Chicago

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

United Airlines Flights From Ottawa to Chicago

Air Canada Flights From Ottawa to Chicago

Travelling to a place near Chicago?

Why use momondo?

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

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

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

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

An easier way to manage your Chicago 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 the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 25.6 km from Chicago