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Cheap flights from Ottawa to Chicago from $205

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 8/3. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:55 am - 2:35 pm
YOW
-
ORD
8h 40m
1 stop
Multiple Airlines Logo
11:45 am - 8:05 am
ORD
-
YOW
19h 20m
1 stop
$394Multiple Airlines
Thu, Sep 24 - Sun, Sep 27
American Airlines Logo
8:40 am - 2:05 pm
YOW
-
ORD
6h 25m
1 stop
American Airlines Logo
11:40 am - 6:24 pm
ORD
-
YOW
5h 44m
1 stop
$395American Airlines
Wed, Oct 21 - Tue, Oct 27
Multiple Airlines Logo
7:00 am - 12:25 pm
YOW
-
ORD
30h 25m
2 stops
Multiple Airlines Logo
7:00 am - 12:54 pm
ORD
-
YOW
4h 54m
1 stop
$396Multiple Airlines
Wed, Aug 26 - Sat, Sep 5
Multiple Airlines Logo
6:25 pm - 11:00 am
YOW
-
ORD
17h 35m
1 stop
Multiple Airlines Logo
3:20 pm - 8:05 am
ORD
-
YOW
15h 45m
1 stop
$398Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
6:25 pm - 11:00 am
YOW
-
ORD
17h 35m
1 stop
Multiple Airlines Logo
3:20 pm - 8:05 am
ORD
-
YOW
15h 45m
1 stop
$402Multiple Airlines
Thu, Sep 10 - Mon, Sep 14
American Airlines Logo
8:40 am - 2:05 pm
YOW
-
ORD
6h 25m
1 stop
American Airlines Logo
9:40 am - 4:49 pm
ORD
-
YOW
6h 09m
1 stop
$410American Airlines
Tue, Oct 20 - Mon, Oct 26
Porter Airlines Logo
8:00 am - 11:00 am
YOW
-
ORD
4h 00m
1 stop
Porter Airlines Logo
7:00 am - 12:54 pm
ORD
-
YOW
4h 54m
1 stop
$411Porter Airlines
Wed, Sep 2 - Sat, Sep 5
Multiple Airlines Logo
6:55 am - 2:35 pm
YOW
-
ORD
8h 40m
1 stop
Multiple Airlines Logo
3:20 pm - 8:05 am
ORD
-
YOW
15h 45m
1 stop
$412Multiple Airlines
Wed, Sep 9 - Mon, Sep 14
American Airlines Logo
8:40 am - 2:22 pm
YOW
-
ORD
6h 42m
1 stop
American Airlines Logo
2:38 pm - 9:20 pm
ORD
-
YOW
5h 42m
1 stop
$415American Airlines
Fri, Jul 24 - Sun, Jul 26
American Airlines Logo
8:40 am - 2:22 pm
YOW
-
ORD
6h 42m
1 stop
American Airlines Logo
2:38 pm - 9:20 pm
ORD
-
YOW
5h 42m
1 stop
$416American Airlines
Fri, Jul 24 - Sun, Jul 26

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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
Sep 2
YOW8:00 amOttawa
4h 00m
1 stop
ORD11:00 amChicago O'Hare Intl
Sep 5
ORD7:00 amChicago O'Hare Intl
4h 54m
1 stop
YOW12:54 pmOttawa
$411
Porter Airlines
Oct 15
YOW5:55 pmOttawa
4h 40m
1 stop
ORD9:35 pmChicago O'Hare Intl
Oct 18
ORD3:20 pmChicago O'Hare Intl
3h 44m
1 stop
YOW8:04 pmOttawa
$423
Porter Airlines
Oct 14
YOW8:00 amOttawa
4h 00m
1 stop
ORD11:00 amChicago O'Hare Intl
Oct 18
ORD3:20 pmChicago O'Hare Intl
3h 44m
1 stop
YOW8:04 pmOttawa
$440

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
Jun 18
YOW6:45 amOttawa
7h 25m
1 stop
ORD1:10 pmChicago O'Hare Intl
Jun 21
ORD5:35 pmChicago O'Hare Intl
6h 10m
1 stop
YOW12:45 amOttawa
$684
Air Canada
Jun 28
YOW10:44 amOttawa
2h 27m
ORD12:11 pmChicago O'Hare Intl
Jun 30
ORD2:00 pmChicago O'Hare Intl
4h 52m
1 stop
YOW7:52 pmOttawa
$694
Air Canada
Jun 21
YOW5:25 pmOttawa
2h 27m
ORD6:52 pmChicago O'Hare Intl
Jun 24
ORD2:00 pmChicago O'Hare Intl
4h 52m
1 stop
YOW7:52 pmOttawa
$774

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 June 15, 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

Thu 9/24

6:55 am-2:35 pm

1 stop8h 40m

Chicago O'Hare Intl

Sun 9/27

11:45 am-8:05 am

1 stop19h 20m

$394

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 10/21

8:40 am-2:05 pm

1 stop6h 25m

Chicago O'Hare Intl

Tue 10/27

11:40 am-6:24 pm

1 stop5h 44m

$395

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 8/26

7:00 am-12:25 pm

2 stops30h 25m

Chicago O'Hare Intl

Sat 9/5

7:00 am-12:54 pm

1 stop4h 54m

$396

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 9/17

6:25 pm-11:00 am

1 stop17h 35m

Chicago O'Hare Intl

Mon 9/21

3:20 pm-8:05 am

1 stop15h 45m

$398

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 9/10

6:25 pm-11:00 am

1 stop17h 35m

Chicago O'Hare Intl

Mon 9/14

3:20 pm-8:05 am

1 stop15h 45m

$402

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 10/20

8:40 am-2:05 pm

1 stop6h 25m

Chicago O'Hare Intl

Mon 10/26

9:40 am-4:49 pm

1 stop6h 09m

$410
Quickest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 9/2

8:00 am-11:00 am

1 stop4h 00m

Chicago O'Hare Intl

Sat 9/5

7:00 am-12:54 pm

1 stop4h 54m

$411

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 9/9

6:55 am-2:35 pm

1 stop8h 40m

Chicago O'Hare Intl

Mon 9/14

3:20 pm-8:05 am

1 stop15h 45m

$412

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 7/24

8:40 am-2:22 pm

1 stop6h 42m

Chicago O'Hare Intl

Sun 7/26

2:38 pm-9:20 pm

1 stop5h 42m

$415

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 7/24

8:40 am-2:22 pm

1 stop6h 42m

Chicago O'Hare Intl

Sun 7/26

2:38 pm-9:20 pm

1 stop5h 42m

$416

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 September 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 Tuesday when prices can be found for as low as $535. 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 $708.

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 $523 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $626. 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 Airport flights?

There are 4 cabin classes available to choose from on Ottawa to Chicago O'Hare Intl Airport 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 35% 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

$271

Fastest flight time

2h 19m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ottawa in the past 72 hours is $271. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $528.
The fastest flight from Ottawa to Chicago O'Hare Intl Airport takes 2h 19m
Direct flights go from Ottawa to Chicago O'Hare Intl Airport every day.
Search flight deals

Frequently asked questions about flying from Ottawa to Chicago O'Hare Intl Airport

  • 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 19m.

  • 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
United AirlinesPriceFrom $324Free CancellationRating
7.4
9,830 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 21 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.

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
Rosemont
Naperville
Orland Park
Oak Brook
New Buffalo
Joliet
Kenosha
Aurora
Hammond
Racine
Janesville
Evanston
Elgin
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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