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Cheap flights from Ottawa to Chicago from C$ 270

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 24/4. 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
7:00 a.m. - 9:17 p.m.
YOW
-
ORD
15h 17m
1 stop
Multiple Airlines Logo
12:47 p.m. - 5:25 p.m.
ORD
-
YOW
27h 38m
1 stop
C$ 476Multiple Airlines
Wed, 15 Apr - Mon, 20 Apr
Multiple Airlines Logo
5:40 a.m. - 12:22 a.m.
YOW
-
ORD
19h 42m
2 stops
Multiple Airlines Logo
2:09 p.m. - 12:35 p.m.
ORD
-
YOW
21h 26m
1 stop
C$ 484Multiple Airlines
Fri, 10 Apr - Fri, 17 Apr
Multiple Airlines Logo
3:55 p.m. - 12:22 a.m.
YOW
-
ORD
9h 27m
1 stop
Multiple Airlines Logo
2:09 p.m. - 12:35 p.m.
ORD
-
YOW
21h 26m
1 stop
C$ 491Multiple Airlines
Fri, 10 Apr - Fri, 17 Apr
Multiple Airlines Logo
11:00 a.m. - 12:22 a.m.
YOW
-
ORD
14h 22m
2 stops
Multiple Airlines Logo
6:01 p.m. - 5:25 p.m.
ORD
-
YOW
22h 24m
1 stop
C$ 495Multiple Airlines
Tue, 7 Apr - Tue, 14 Apr
Multiple Airlines Logo
3:55 p.m. - 12:22 a.m.
YOW
-
ORD
9h 27m
1 stop
Multiple Airlines Logo
6:01 p.m. - 5:25 p.m.
ORD
-
YOW
22h 24m
1 stop
C$ 497Multiple Airlines
Tue, 7 Apr - Tue, 14 Apr
Multiple Airlines Logo
7:00 a.m. - 9:17 p.m.
YOW
-
ORD
15h 17m
1 stop
Multiple Airlines Logo
2:09 p.m. - 5:25 p.m.
ORD
-
YOW
26h 16m
1 stop
C$ 504Multiple Airlines
Wed, 15 Apr - Mon, 20 Apr
Multiple Airlines Logo
7:00 a.m. - 9:17 p.m.
YOW
-
ORD
15h 17m
1 stop
Multiple Airlines Logo
7:15 p.m. - 5:25 p.m.
ORD
-
YOW
21h 10m
2 stops
C$ 509Multiple Airlines
Tue, 14 Apr - Wed, 15 Apr
Multiple Airlines Logo
7:00 a.m. - 9:17 p.m.
YOW
-
ORD
15h 17m
1 stop
Multiple Airlines Logo
7:15 p.m. - 12:25 a.m.
ORD
-
YOW
28h 10m
1 stop
C$ 512Multiple Airlines
Tue, 14 Apr - Wed, 15 Apr
Multiple Airlines Logo
7:00 a.m. - 9:17 p.m.
YOW
-
ORD
15h 17m
1 stop
Multiple Airlines Logo
12:47 p.m. - 5:25 p.m.
ORD
-
YOW
27h 38m
1 stop
C$ 525Multiple Airlines
Wed, 15 Apr - Mon, 20 Apr
Multiple Airlines Logo
7:00 a.m. - 9:36 a.m.
YOW
-
ORD
27h 36m
1 stop
Multiple Airlines Logo
7:15 p.m. - 5:25 p.m.
ORD
-
YOW
21h 10m
2 stops
C$ 527Multiple Airlines
Tue, 14 Apr - Wed, 22 Apr

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
19 Mar
YOW5:11 p.m.Ottawa
2h 41m
ORD6:52 p.m.Chicago O'Hare Intl
27 Mar
ORD7:10 a.m.Chicago O'Hare Intl
5h 22m
1 stop
YOW1:32 p.m.Ottawa
C$ 1,132
United Airlines
26 Mar
YOW6:20 a.m.Ottawa
2h 40m
ORD8:00 a.m.Chicago O'Hare Intl
26 Mar
ORD3:40 p.m.Chicago O'Hare Intl
5h 16m
1 stop
YOW9:56 p.m.Ottawa
C$ 1,183
United Airlines
24 Mar
YOW11:10 a.m.Ottawa
2h 38m
ORD12:48 p.m.Chicago O'Hare Intl
26 Mar
ORD10:50 a.m.Chicago O'Hare Intl
4h 40m
1 stop
YOW4:30 p.m.Ottawa
C$ 1,198

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
26 Mar
YOW7:15 a.m.Ottawa
6h 46m
1 stop
ORD1:01 p.m.Chicago O'Hare Intl
2 Apr
ORD9:50 a.m.Chicago O'Hare Intl
7h 46m
1 stop
YOW6:36 p.m.Ottawa
C$ 1,040
Air Canada
24 Mar
YOW5:11 p.m.Ottawa
2h 41m
ORD6:52 p.m.Chicago O'Hare Intl
26 Mar
ORD2:00 p.m.Chicago O'Hare Intl
2h 12m
YOW5:12 p.m.Ottawa
C$ 1,210
Air Canada
24 Mar
YOW5:11 p.m.Ottawa
2h 41m
ORD6:52 p.m.Chicago O'Hare Intl
26 Mar
ORD2:00 p.m.Chicago O'Hare Intl
2h 12m
YOW5:12 p.m.Ottawa
C$ 1,228

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 15 March 2026.
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

Cheapest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 15/4

7:00 a.m.-9:17 p.m.

1 stop15h 17m

Chicago O'Hare Intl

Mon 20/4

12:47 p.m.-5:25 p.m.

1 stop27h 38m

C$ 476

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 10/4

5:40 a.m.-12:22 a.m.

2 stops19h 42m

Chicago O'Hare Intl

Fri 17/4

2:09 p.m.-12:35 p.m.

1 stop21h 26m

C$ 484
Quickest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 10/4

3:55 p.m.-12:22 a.m.

1 stop9h 27m

Chicago O'Hare Intl

Fri 17/4

2:09 p.m.-12:35 p.m.

1 stop21h 26m

C$ 491

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 7/4

11:00 a.m.-12:22 a.m.

2 stops14h 22m

Chicago O'Hare Intl

Tue 14/4

6:01 p.m.-5:25 p.m.

1 stop22h 24m

C$ 495

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 7/4

3:55 p.m.-12:22 a.m.

1 stop9h 27m

Chicago O'Hare Intl

Tue 14/4

6:01 p.m.-5:25 p.m.

1 stop22h 24m

C$ 497

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 15/4

7:00 a.m.-9:17 p.m.

1 stop15h 17m

Chicago O'Hare Intl

Mon 20/4

2:09 p.m.-5:25 p.m.

1 stop26h 16m

C$ 504

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 14/4

7:00 a.m.-9:17 p.m.

1 stop15h 17m

Chicago O'Hare Intl

Wed 15/4

7:15 p.m.-5:25 p.m.

2 stops21h 10m

C$ 509

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 14/4

7:00 a.m.-9:17 p.m.

1 stop15h 17m

Chicago O'Hare Intl

Wed 15/4

7:15 p.m.-12:25 a.m.

1 stop28h 10m

C$ 512

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 15/4

7:00 a.m.-9:17 p.m.

1 stop15h 17m

Chicago O'Hare Intl

Mon 20/4

12:47 p.m.-5:25 p.m.

1 stop27h 38m

C$ 525

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 14/4

7:00 a.m.-9:36 a.m.

1 stop27h 36m

Chicago O'Hare Intl

Wed 22/4

7:15 p.m.-5:25 p.m.

2 stops21h 10m

C$ 527

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, 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$ 469. The month of October is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around C$ 469.

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$ 703. 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$ 918.

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$ 734. 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$ 851 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

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$ 273

Fastest flight time

2h 20m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ottawa in the past 72 hours is C$ 273. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 555.
The fastest flight from Ottawa to Chicago O'Hare Intl Airport takes 2h 20m
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 20m.

  • 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$ 460Free CancellationRating
7.4
9,427 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 488Free CancellationRating
7.1
10,801 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$ 614, but momondo users have found United Airlines deals from Ottawa to Chicago O'Hare Intl Airport from as low as C$ 460 round-trip. United Airlines has been scored 7.4/10 in 9,427 reviews.

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

    Air Canada (7.1/10 from 10,801 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$ 631, with deals from around C$ 488 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
Merrillville
Northbrook
Tinley Park
Munster
Skokie
Great Lakes
Wheeling
Hammond
Harvey
Naperville
Glenview
Des Plaines
Elmhurst
DeKalb
Harvard
Oak Brook
Kankakee

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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