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Cheap flights from Ottawa to Chicago from $149

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 2/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:40 pm - 12:40 am
YOW
-
ORD
10h 00m
2 stops
Multiple Airlines Logo
8:16 pm - 5:25 pm
ORD
-
YOW
20h 09m
1 stop
$277Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
3:55 pm - 12:40 am
YOW
-
ORD
9h 45m
1 stop
Multiple Airlines Logo
8:16 pm - 5:25 pm
ORD
-
YOW
20h 09m
1 stop
$278Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
4:15 pm - 10:36 am
YOW
-
ORD
19h 21m
1 stop
Multiple Airlines Logo
7:17 am - 12:25 am
ORD
-
YOW
16h 08m
1 stop
$282Multiple Airlines
Mon, Mar 23 - Wed, Mar 25
Multiple Airlines Logo
4:15 pm - 10:36 am
YOW
-
ORD
19h 21m
1 stop
Multiple Airlines Logo
8:41 pm - 12:25 am
ORD
-
YOW
26h 44m
1 stop
$286Multiple Airlines
Mon, Mar 23 - Wed, Mar 25
Multiple Airlines Logo
9:30 am - 4:55 pm
YOW
-
ORD
8h 25m
1 stop
Multiple Airlines Logo
6:36 pm - 12:25 am
ORD
-
YOW
28h 49m
1 stop
$295Multiple Airlines
Mon, Mar 23 - Tue, Mar 24
Multiple Airlines Logo
4:15 pm - 10:36 am
YOW
-
ORD
19h 21m
1 stop
Multiple Airlines Logo
9:28 am - 12:25 am
ORD
-
YOW
13h 57m
2 stops
$301Multiple Airlines
Mon, Mar 23 - Wed, Mar 25
Multiple Airlines Logo
5:00 pm - 12:40 am
YOW
-
ORD
8h 40m
2 stops
Multiple Airlines Logo
6:51 pm - 5:25 pm
ORD
-
YOW
21h 34m
1 stop
$308Multiple Airlines
Fri, Feb 27 - Sun, Mar 1
Multiple Airlines Logo
3:55 pm - 12:40 am
YOW
-
ORD
9h 45m
1 stop
Multiple Airlines Logo
6:51 pm - 5:25 pm
ORD
-
YOW
21h 34m
1 stop
$309Multiple Airlines
Fri, Feb 27 - Sun, Mar 1
Multiple Airlines Logo
12:10 pm - 9:22 am
YOW
-
ORD
22h 12m
2 stops
Multiple Airlines Logo
12:05 pm - 11:35 am
ORD
-
YOW
22h 30m
1 stop
$311Multiple Airlines
Sun, Mar 1 - Sat, Mar 7
Multiple Airlines Logo
3:55 pm - 9:22 am
YOW
-
ORD
18h 27m
1 stop
Multiple Airlines Logo
12:05 pm - 11:35 am
ORD
-
YOW
22h 30m
1 stop
$313Multiple Airlines
Sun, Mar 1 - Sat, Mar 7

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
Apr 27
YOW7:30 amOttawa
10h 10m
1 stop
ORD4:40 pmChicago O'Hare Intl
Apr 30
ORD5:30 pmChicago O'Hare Intl
11h 10m
1 stop
YOW5:40 amOttawa
$326
WestJet
May 7
YOW7:30 amOttawa
10h 10m
1 stop
ORD4:40 pmChicago O'Hare Intl
May 11
ORD5:30 pmChicago O'Hare Intl
22h 50m
1 stop
YOW5:20 pmOttawa
$342
WestJet
May 7
YOW7:30 amOttawa
10h 10m
1 stop
ORD4:40 pmChicago O'Hare Intl
May 11
ORD5:30 pmChicago O'Hare Intl
18h 00m
2 stops
YOW12:30 pmOttawa
$343

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

Our best Porter Airlines deals on Ottawa to Chicago O'Hare Intl Airport flight tickets
Porter Airlines
Feb 6
YOW6:40 amOttawa
6h 50m
1 stop
ORD12:30 pmChicago O'Hare Intl
Mar 6
ORD9:46 amChicago O'Hare Intl
6h 02m
1 stop
YOW4:48 pmOttawa
$627
Porter Airlines
Feb 4
YOW6:40 amOttawa
6h 45m
1 stop
ORD12:25 pmChicago O'Hare Intl
Mar 3
ORD9:46 amChicago O'Hare Intl
6h 02m
1 stop
YOW4:48 pmOttawa
$656
Porter Airlines
Feb 3
YOW6:40 amOttawa
6h 45m
1 stop
ORD12:25 pmChicago O'Hare Intl
Mar 6
ORD9:46 amChicago O'Hare Intl
6h 02m
1 stop
YOW4:48 pmOttawa
$665

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 832,500 searches. Data last updated January 29, 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

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 2/24

3:40 pm-12:40 am

2 stops10h 00m

Chicago O'Hare Intl

Tue 3/3

8:16 pm-5:25 pm

1 stop20h 09m

$277

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 2/24

3:55 pm-12:40 am

1 stop9h 45m

Chicago O'Hare Intl

Tue 3/3

8:16 pm-5:25 pm

1 stop20h 09m

$278

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 3/23

4:15 pm-10:36 am

1 stop19h 21m

Chicago O'Hare Intl

Wed 3/25

7:17 am-12:25 am

1 stop16h 08m

$282

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 3/23

4:15 pm-10:36 am

1 stop19h 21m

Chicago O'Hare Intl

Wed 3/25

8:41 pm-12:25 am

1 stop26h 44m

$286

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 3/23

9:30 am-4:55 pm

1 stop8h 25m

Chicago O'Hare Intl

Tue 3/24

6:36 pm-12:25 am

1 stop28h 49m

$295

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 3/23

4:15 pm-10:36 am

1 stop19h 21m

Chicago O'Hare Intl

Wed 3/25

9:28 am-12:25 am

2 stops13h 57m

$301

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 2/27

5:00 pm-12:40 am

2 stops8h 40m

Chicago O'Hare Intl

Sun 3/1

6:51 pm-5:25 pm

1 stop21h 34m

$308

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 2/27

3:55 pm-12:40 am

1 stop9h 45m

Chicago O'Hare Intl

Sun 3/1

6:51 pm-5:25 pm

1 stop21h 34m

$309

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sun 3/1

12:10 pm-9:22 am

2 stops22h 12m

Chicago O'Hare Intl

Sat 3/7

12:05 pm-11:35 am

1 stop22h 30m

$311

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sun 3/1

3:55 pm-9:22 am

1 stop18h 27m

Chicago O'Hare Intl

Sat 3/7

12:05 pm-11:35 am

1 stop22h 30m

$313

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 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?

The month of October is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around $342.

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 $526. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Ottawa because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $691.

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

Flying to Chicago O'Hare Intl Airport from Ottawa in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $559 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $630. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

$252

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 $252. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $349.
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.
Search flight deals

  • How far is Ottawa to Chicago O'Hare Intl by plane?

    Ottawa and Chicago O'Hare Intl are 653.1 mi apart from one another. A reasonable flight in good conditions will take 2h 08m.

  • 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 required for your trip to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport. 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 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
Air CanadaPriceFrom $306Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
United AirlinesPriceFrom $324Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights

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

    United Airlines is one of the most popular airlines flying from Ottawa to Chicago O'Hare Intl Airport, operating 9 flights/week on average for this route. A good United Airlines flight deal for Ottawa to Chicago O'Hare Intl Airport starts from $324 round-trip, up to an average price of $580. Our users have rated United Airlines at 7.4/10.

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

    Air Canada is also a popular choice for this route. Air Canada flight deals for Ottawa to Chicago O'Hare Intl Airport start from as low as $306 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $550. Air Canada operates 14 flights to Chicago O'Hare Intl Airport from Ottawa in an average week. Users have rated it 7.1/10 across 10,667 reviews.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Naperville
Rosemont
New Buffalo
Kenosha
Joliet
Oak Brook
Orland Park
Racine
Hammond
Janesville
Tinley Park
Elgin
Aurora
South Holland

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 recognisable 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?

Yes. momondo enables you to select and highlight flights to Chicago from Ottawa with this policy.

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

momondo provides multiple filters to help you find the best flight to Chicago from Ottawa. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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.

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