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Cheap flights from Ottawa to Chicago from C$ 184

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 4/12. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:30 a.m. - 11:13 a.m.YOW-ORD
26h 43m3 stops
Multiple Airlines Logo
5:00 a.m. - 12:25 a.m.ORD-YOW
18h 25m1 stop
C$ 379Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Multiple Airlines Logo
4:15 p.m. - 12:09 a.m.YOW-ORD
8h 54m1 stop
Multiple Airlines Logo
7:10 a.m. - 12:25 a.m.ORD-YOW
16h 15m1 stop
C$ 384Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Multiple Airlines Logo
4:15 p.m. - 12:09 a.m.YOW-ORD
8h 54m1 stop
Multiple Airlines Logo
7:10 a.m. - 12:25 a.m.ORD-YOW
16h 15m1 stop
C$ 386Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Multiple Airlines Logo
4:15 p.m. - 12:09 a.m.YOW-ORD
8h 54m1 stop
Multiple Airlines Logo
7:10 a.m. - 12:25 a.m.ORD-YOW
16h 15m1 stop
C$ 387Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Multiple Airlines Logo
4:15 p.m. - 12:09 a.m.YOW-ORD
8h 54m1 stop
Multiple Airlines Logo
12:09 p.m. - 5:13 p.m.ORD-YOW
28h 04m1 stop
C$ 394Multiple Airlines
Find Deal
Thu, 11 Dec - Mon, 15 Dec
Multiple Airlines Logo
9:30 a.m. - 11:13 a.m.YOW-ORD
26h 43m3 stops
Multiple Airlines Logo
7:10 a.m. - 12:25 a.m.ORD-YOW
16h 15m1 stop
C$ 408Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Multiple Airlines Logo
4:15 p.m. - 12:09 a.m.YOW-ORD
8h 54m1 stop
Multiple Airlines Logo
3:23 p.m. - 5:13 p.m.ORD-YOW
24h 50m2 stops
C$ 416Multiple Airlines
Find Deal
Thu, 11 Dec - Mon, 15 Dec
Multiple Airlines Logo
4:15 p.m. - 12:09 a.m.YOW-ORD
8h 54m1 stop
Multiple Airlines Logo
5:17 p.m. - 5:13 p.m.ORD-YOW
46h 56m2 stops
C$ 421Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Air Canada Logo
11:10 a.m. - 12:51 p.m.YOW-ORD
2h 41mdirect
Air Canada Logo
3:38 p.m. - 1:38 a.m.ORD-YOW
9h 00m2 stops
C$ 490Air Canada
Find Deal
Fri, 5 Dec - Fri, 5 Dec
Air Canada Logo
9:15 a.m. - 6:14 p.m.YOW-ORD
9h 59m2 stops
Air Canada Logo
8:15 p.m. - 1:38 a.m.ORD-YOW
4h 23m1 stop
C$ 500Air Canada
Find Deal
Fri, 5 Dec - Fri, 5 Dec

Air Canada flights from Ottawa to Chicago O'Hare Intl Airport

Our best Air Canada deals on Ottawa to Chicago O'Hare Intl Airport flight tickets
Air Canada
5 Dec
YOW11:10 a.m.Ottawa
2h 41m
ORD12:51 p.m.Chicago O'Hare Intl
5 Dec
ORD3:38 p.m.Chicago O'Hare Intl
9h 00m
2 stops
YOW1:38 a.m.Ottawa
C$ 490
Find similar
Air Canada
5 Dec
YOW9:15 a.m.Ottawa
9h 59m
2 stops
ORD6:14 p.m.Chicago O'Hare Intl
5 Dec
ORD8:15 p.m.Chicago O'Hare Intl
4h 23m
1 stop
YOW1:38 a.m.Ottawa
C$ 500
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ottawa to Chicago O'Hare Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 29 October 2025.
Use the filters below to find and compare flights from Ottawa to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 4/12

9:30 a.m.-11:13 a.m.

3 stops26h 43m

Chicago O'Hare Intl

Mon 8/12

5:00 a.m.-12:25 a.m.

1 stop18h 25m

C$ 379

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 4/12

4:15 p.m.-12:09 a.m.

1 stop8h 54m

Chicago O'Hare Intl

Mon 8/12

7:10 a.m.-12:25 a.m.

1 stop16h 15m

C$ 384

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 4/12

4:15 p.m.-12:09 a.m.

1 stop8h 54m

Chicago O'Hare Intl

Mon 8/12

7:10 a.m.-12:25 a.m.

1 stop16h 15m

C$ 386

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 4/12

4:15 p.m.-12:09 a.m.

1 stop8h 54m

Chicago O'Hare Intl

Mon 8/12

7:10 a.m.-12:25 a.m.

1 stop16h 15m

C$ 387

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 11/12

4:15 p.m.-12:09 a.m.

1 stop8h 54m

Chicago O'Hare Intl

Mon 15/12

12:09 p.m.-5:13 p.m.

1 stop28h 04m

C$ 394

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 4/12

9:30 a.m.-11:13 a.m.

3 stops26h 43m

Chicago O'Hare Intl

Mon 8/12

7:10 a.m.-12:25 a.m.

1 stop16h 15m

C$ 408

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 11/12

4:15 p.m.-12:09 a.m.

1 stop8h 54m

Chicago O'Hare Intl

Mon 15/12

3:23 p.m.-5:13 p.m.

2 stops24h 50m

C$ 416

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 4/12

4:15 p.m.-12:09 a.m.

1 stop8h 54m

Chicago O'Hare Intl

Mon 8/12

5:17 p.m.-5:13 p.m.

2 stops46h 56m

C$ 421

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 5/12

11:10 a.m.-12:51 p.m.

Nonstop2h 41m

Chicago O'Hare Intl

Fri 5/12

3:38 p.m.-1:38 a.m.

2 stops9h 00m

C$ 490

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 5/12

9:15 a.m.-6:14 p.m.

2 stops9h 59m

Chicago O'Hare Intl

Fri 5/12

8:15 p.m.-1:38 a.m.

1 stop4h 23m

C$ 500

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Ottawa to Chicago O'Hare Intl Airport

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 O'Hare Intl Airport?

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

In general, September is the cheapest month to fly from Ottawa to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 478. The month of June is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around C$ 595.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Saturday when prices can be found for as low as C$ 780. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to Chicago O'Hare Intl Airport for around C$ 931.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

In the afternoon is the cheapest time of day to fly from Ottawa to Chicago O'Hare Intl Airport when you can find flight prices for as low as C$ 754. Flying to Chicago O'Hare Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 899 on average. Flights to Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl flight route?

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Ottawa when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around C$ 697 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Ottawa for as low as C$ 496 on momondo.

What cabin class options are available on Ottawa to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on Ottawa to Chicago O'Hare Intl 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 O'Hare Intl Airport flights?

You could potentially save up to 37% on your flight if you consider stops on a Ottawa to Chicago O'Hare Intl Airport flight.

When to book flights from Ottawa to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ottawa to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ottawa to Chicago O'Hare Intl Airport (YOW to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ottawa to Chicago O'Hare Intl Airport

Best price found

C$ 383

Fastest flight time

2h 08m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ottawa in the past 72 hours is C$ 383. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 541.
The fastest flight from Ottawa to Chicago O'Hare Intl Airport takes 2h 08m
Direct flights go from Ottawa to Chicago O'Hare Intl Airport every day.
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  • How far is Ottawa to Chicago O'Hare Intl by plane?

    The straight-line distance from Ottawa to Chicago O'Hare Intl is 1051.1 km. In terms of flight time, this usually takes a little over 2h 41m.

  • When did momondo last update prices for flights from Ottawa Airport to Chicago O'Hare Intl Airport?

    Prices for flights from Ottawa Airport to Chicago O'Hare Intl Airport are updated daily.

  • How many operators does momondo search for flights from Ottawa Airport to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Ottawa Airport to Chicago O'Hare Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ottawa Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport. 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 Chicago O'Hare Intl Airport?

  • What is the most popular airline from Ottawa to Chicago O'Hare Intl Airport?

Best airlines flying from Ottawa to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Ottawa to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 470Free CancellationRating
7.4
8,999 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 497Free CancellationRating
7.1
10,372 reviews
Search Air Canada flights

  • United Airlines Flights From Ottawa to Chicago O'Hare Intl Airport

    United Airlines operates around 18 flights from Ottawa to Chicago O'Hare Intl Airport every week. The average price of these flights found in the last 72 hours has been C$ 676, but momondo users have found United Airlines deals from Ottawa to Chicago O'Hare Intl Airport from as low as C$ 470 round-trip. United Airlines has been scored 7.4/10 in 8,999 reviews.

  • Air Canada Flights From Ottawa to Chicago O'Hare Intl Airport

    Air Canada (7.1/10 from 10,372 reviews) operates around 18 flights from Ottawa to Chicago O'Hare Intl Airport in any given week. The average Air Canada airfare for this route is around C$ 644, with deals from around C$ 497 rare but found on momondo. Referenced prices are for round-trip Ottawa to Chicago O'Hare Intl Airport flight searches in the last 72 hours.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Schaumburg
Rosemont
Hoffman Estates
Northbrook
Tinley Park
Munster
Hammond
Naperville
Glenview
Great Lakes
Wheeling
Des Plaines
Elk Grove Village
Harvard
Merrillville
Oak Brook
Elmhurst
Kenosha
Skokie
Rockford

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

Of course. momondo tracks the price of Ottawa to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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