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Cheap flights from Ottawa to Chicago from C$ 233

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 20/10. 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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Cheap round-trip flights

United Airlines Logo
6:33 a.m. - 8:00 a.m.YOW-ORD
2h 27mdirect
United Airlines Logo
10:50 a.m. - 2:04 p.m.ORD-YOW
2h 14mdirect
C$ 472United Airlines
Find Deal
Fri, 3 Oct - Wed, 15 Oct
Logo
4:25 p.m. - 3:17 p.m.YOW-ORD
23h 52m1 stop
Logo
5:05 a.m. - 5:20 p.m.ORD-YOW
11h 15m1 stop
C$ 476
Find Deal
Fri, 26 Sep - Sun, 28 Sep
United Airlines Logo
5:50 p.m. - 11:30 p.m.YOW-ORD
6h 40m1 stop
United Airlines Logo
9:20 p.m. - 9:58 a.m.ORD-YOW
11h 38m1 stop
C$ 479United Airlines
Find Deal
Fri, 26 Sep - Mon, 29 Sep
United Airlines Logo
7:29 p.m. - 11:15 p.m.YOW-ORD
4h 46m1 stop
United Airlines Logo
8:50 a.m. - 2:13 p.m.ORD-YOW
4h 23m1 stop
C$ 480United Airlines
Find Deal
Fri, 3 Oct - Wed, 15 Oct
Logo
3:50 p.m. - 11:45 p.m.YOW-ORD
8h 55m1 stop
Logo
5:30 p.m. - 4:19 p.m.ORD-YOW
21h 49m2 stops
C$ 482
Find Deal
Thu, 9 Oct - Sun, 12 Oct
Logo
4:25 p.m. - 11:58 a.m.YOW-ORD
20h 33m2 stops
Logo
8:49 p.m. - 4:57 p.m.ORD-YOW
19h 08m1 stop
C$ 483
Find Deal
Sat, 27 Sep - Mon, 29 Sep
Logo
4:15 p.m. - 1:03 a.m.YOW-ORD
9h 48m1 stop
Logo
5:05 a.m. - 5:25 p.m.ORD-YOW
11h 20m1 stop
C$ 487
Find Deal
Thu, 30 Oct - Tue, 4 Nov
WestJet Logo
12:20 p.m. - 12:39 p.m.YOW-ORD
25h 19m2 stops
WestJet Logo
5:30 p.m. - 4:19 p.m.ORD-YOW
21h 49m2 stops
C$ 516WestJet
Find Deal
Fri, 3 Oct - Mon, 6 Oct
WestJet Logo
5:40 a.m. - 4:11 p.m.YOW-ORD
11h 31m2 stops
WestJet Logo
11:14 a.m. - 12:42 a.m.ORD-YOW
12h 28m2 stops
C$ 552WestJet
Find Deal
Fri, 7 Nov - Mon, 10 Nov
WestJet Logo
5:40 a.m. - 4:18 p.m.YOW-ORD
11h 38m2 stops
WestJet Logo
11:15 a.m. - 12:42 a.m.ORD-YOW
12h 27m2 stops
C$ 570WestJet
Find Deal
Tue, 2 Dec - Thu, 4 Dec

United Airlines flights from Ottawa to Chicago O'Hare Intl Airport

Our best United Airlines deals on Ottawa to Chicago O'Hare Intl Airport flight tickets
United Airlines
3 Oct
YOW6:33 a.m.Ottawa
2h 27m
ORD8:00 a.m.Chicago O'Hare Intl
15 Oct
ORD10:50 a.m.Chicago O'Hare Intl
2h 14m
YOW2:04 p.m.Ottawa
C$ 472
Find similar
United Airlines
26 Sep
YOW5:50 p.m.Ottawa
6h 40m
1 stop
ORD11:30 p.m.Chicago O'Hare Intl
29 Sep
ORD9:20 p.m.Chicago O'Hare Intl
11h 38m
1 stop
YOW9:58 a.m.Ottawa
C$ 479
Find similar
United Airlines
3 Oct
YOW7:29 p.m.Ottawa
4h 46m
1 stop
ORD11:15 p.m.Chicago O'Hare Intl
15 Oct
ORD8:50 a.m.Chicago O'Hare Intl
4h 23m
1 stop
YOW2:13 p.m.Ottawa
C$ 480
Find similar

WestJet flights from Ottawa to Chicago O'Hare Intl Airport

Our best WestJet deals on Ottawa to Chicago O'Hare Intl Airport flight tickets
WestJet
3 Oct
YOW12:20 p.m.Ottawa
25h 19m
2 stops
ORD12:39 p.m.Chicago O'Hare Intl
6 Oct
ORD5:30 p.m.Chicago O'Hare Intl
21h 49m
2 stops
YOW4:19 p.m.Ottawa
C$ 516
Find similar
WestJet
7 Nov
YOW5:40 a.m.Ottawa
11h 31m
2 stops
ORD4:11 p.m.Chicago O'Hare Intl
10 Nov
ORD11:14 a.m.Chicago O'Hare Intl
12h 28m
2 stops
YOW12:42 a.m.Ottawa
C$ 552
Find similar
WestJet
2 Dec
YOW5:40 a.m.Ottawa
11h 38m
2 stops
ORD4:18 p.m.Chicago O'Hare Intl
4 Dec
ORD11:15 a.m.Chicago O'Hare Intl
12h 27m
2 stops
YOW12:42 a.m.Ottawa
C$ 570
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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 14 September 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

Fri 3/10

6:33 a.m.-8:00 a.m.

Nonstop2h 27m

Chicago O'Hare Intl

Wed 15/10

10:50 a.m.-2:04 p.m.

Nonstop2h 14m

C$ 472

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 26/9

4:25 p.m.-3:17 p.m.

1 stop23h 52m

Chicago O'Hare Intl

Sun 28/9

5:05 a.m.-5:20 p.m.

1 stop11h 15m

C$ 476

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 26/9

5:50 p.m.-11:30 p.m.

1 stop6h 40m

Chicago O'Hare Intl

Mon 29/9

9:20 p.m.-9:58 a.m.

1 stop11h 38m

C$ 479

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 3/10

7:29 p.m.-11:15 p.m.

1 stop4h 46m

Chicago O'Hare Intl

Wed 15/10

8:50 a.m.-2:13 p.m.

1 stop4h 23m

C$ 480

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 9/10

3:50 p.m.-11:45 p.m.

1 stop8h 55m

Chicago O'Hare Intl

Sun 12/10

5:30 p.m.-4:19 p.m.

2 stops21h 49m

C$ 482

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 27/9

4:25 p.m.-11:58 a.m.

2 stops20h 33m

Chicago O'Hare Intl

Mon 29/9

8:49 p.m.-4:57 p.m.

1 stop19h 08m

C$ 483

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 30/10

4:15 p.m.-1:03 a.m.

1 stop9h 48m

Chicago O'Hare Intl

Tue 4/11

5:05 a.m.-5:25 p.m.

1 stop11h 20m

C$ 487

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 3/10

12:20 p.m.-12:39 p.m.

2 stops25h 19m

Chicago O'Hare Intl

Mon 6/10

5:30 p.m.-4:19 p.m.

2 stops21h 49m

C$ 516

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 7/11

5:40 a.m.-4:11 p.m.

2 stops11h 31m

Chicago O'Hare Intl

Mon 10/11

11:14 a.m.-12:42 a.m.

2 stops12h 28m

C$ 552

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 2/12

5:40 a.m.-4:18 p.m.

2 stops11h 38m

Chicago O'Hare Intl

Thu 4/12

11:15 a.m.-12:42 a.m.

2 stops12h 27m

C$ 570

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

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 cheapest month to fly to Chicago O'Hare Intl Airport?

In general, June 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$ 590. The month of July is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around C$ 613.

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 Friday when prices can be found for as low as C$ 807. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, 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$ 938.

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$ 765. 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$ 916 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$ 715 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$ 321 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?

No. A direct flight is the cheapest option for a flight between Ottawa to Chicago O'Hare Intl Airport.

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$ 321

Fastest flight time

2h 24m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ottawa in the past 72 hours is C$ 321. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 614.
The fastest flight from Ottawa to Chicago O'Hare Intl Airport takes 2h 24m
Direct flights go from Ottawa to Chicago O'Hare Intl Airport every day.
Search flight deals

  • 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 27m.

  • 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$ 466Free CancellationRating
7.4
8,931 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 504Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

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

    United Airlines operates around 21 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$ 497, but momondo users have found United Airlines deals from Ottawa to Chicago O'Hare Intl Airport from as low as C$ 336 round-trip. United Airlines has been scored 7.4/10 in 8,931 reviews.

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

    Air Canada (7.1/10 from 10,000 reviews) operates around 21 flights from Ottawa to Chicago O'Hare Intl Airport in any given week. The average Air Canada airfare for this route is around C$ 474, with deals from around C$ 364 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
Hoffman Estates
Tinley Park
Munster
Hammond
Naperville
Glenview
Great Lakes
Wheeling
Des Plaines
Harvard
Merrillville
Elk Grove Village
Oak Brook
Elmhurst
Kenosha
Skokie
Rockford
Rosemont

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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