Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ottawa to Chicago from $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 9/14. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ottawa to Chicago

Cheap round-trip flights

Air Canada Logo
6:00 am - 9:51 amYOW-ORD
4h 51m1 stop
Air Canada Logo
8:25 pm - 1:34 amORD-YOW
4h 09m1 stop
$322Air Canada
Find Deal
Thu, Sep 4 - Sun, Sep 7
United Airlines Logo
6:33 am - 8:00 amYOW-ORD
2h 27mnonstop
United Airlines Logo
10:50 am - 2:04 pmORD-YOW
2h 14mnonstop
$324United Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
United Airlines Logo
6:33 am - 8:00 amYOW-ORD
2h 27mnonstop
United Airlines Logo
10:50 am - 2:04 pmORD-YOW
2h 14mnonstop
$325United Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
United Airlines Logo
10:37 am - 12:01 pmYOW-ORD
2h 24mnonstop
United Airlines Logo
6:00 am - 11:45 amORD-YOW
4h 45m1 stop
$334United Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
Air Canada Logo
6:00 am - 9:51 amYOW-ORD
4h 51m1 stop
Air Canada Logo
8:25 pm - 1:34 amORD-YOW
4h 09m1 stop
$340Air Canada
Find Deal
Wed, Sep 3 - Sun, Sep 7
United Airlines Logo
2:45 pm - 6:25 pmYOW-ORD
4h 40m1 stop
United Airlines Logo
6:06 pm - 9:35 pmORD-YOW
2h 29mnonstop
$341United Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
United Airlines Logo
6:33 am - 8:00 amYOW-ORD
2h 27mnonstop
United Airlines Logo
9:31 pm - 9:58 amORD-YOW
11h 27m1 stop
$342United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
6:33 am - 8:00 amYOW-ORD
2h 27mnonstop
United Airlines Logo
6:00 am - 11:45 amORD-YOW
4h 45m1 stop
$343United Airlines
Find Deal
Tue, Oct 7 - Sun, Oct 12
WestJet Logo
7:50 am - 4:43 pmYOW-ORD
9h 53m1 stop
WestJet Logo
5:30 pm - 4:19 pmORD-YOW
21h 49m2 stops
$344WestJet
Find Deal
Fri, Sep 19 - Mon, Sep 22
WestJet Logo
6:00 am - 4:43 pmYOW-ORD
11h 43m1 stop
WestJet Logo
5:30 pm - 4:19 pmORD-YOW
21h 49m2 stops
$345WestJet
Find Deal
Fri, Sep 19 - Mon, Sep 22

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
Sep 19
YOW7:50 amOttawa
9h 53m
1 stop
ORD4:43 pmChicago O'Hare Intl
Sep 22
ORD5:30 pmChicago O'Hare Intl
21h 49m
2 stops
YOW4:19 pmOttawa
$344
Find similar
WestJet
Sep 19
YOW6:00 amOttawa
11h 43m
1 stop
ORD4:43 pmChicago O'Hare Intl
Sep 22
ORD5:30 pmChicago O'Hare Intl
21h 49m
2 stops
YOW4:19 pmOttawa
$345
Find similar
WestJet
Sep 11
YOW6:00 amOttawa
11h 43m
1 stop
ORD4:43 pmChicago O'Hare Intl
Sep 25
ORD5:30 pmChicago O'Hare Intl
21h 49m
2 stops
YOW4:19 pmOttawa
$356
Find similar

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
Sep 4
YOW6:00 amOttawa
4h 51m
1 stop
ORD9:51 amChicago O'Hare Intl
Sep 7
ORD8:25 pmChicago O'Hare Intl
4h 09m
1 stop
YOW1:34 amOttawa
$322
Find similar
Air Canada
Sep 3
YOW6:00 amOttawa
4h 51m
1 stop
ORD9:51 amChicago O'Hare Intl
Sep 7
ORD8:25 pmChicago O'Hare Intl
4h 09m
1 stop
YOW1:34 amOttawa
$340
Find similar
Air Canada
Sep 4
YOW6:00 amOttawa
4h 51m
1 stop
ORD9:51 amChicago O'Hare Intl
Sep 7
ORD10:50 amChicago O'Hare Intl
2h 14m
YOW2:04 pmOttawa
$368
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 832,500 searches. Data last updated July 31, 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 9/4

6:00 am-9:51 am

1 stop4h 51m

Chicago O'Hare Intl

Sun 9/7

8:25 pm-1:34 am

1 stop4h 09m

$322

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 9/3

6:33 am-8:00 am

Nonstop2h 27m

Chicago O'Hare Intl

Sun 9/7

10:50 am-2:04 pm

Nonstop2h 14m

$324

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 9/3

6:33 am-8:00 am

Nonstop2h 27m

Chicago O'Hare Intl

Sun 9/7

10:50 am-2:04 pm

Nonstop2h 14m

$325

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 9/3

10:37 am-12:01 pm

Nonstop2h 24m

Chicago O'Hare Intl

Sun 9/7

6:00 am-11:45 am

1 stop4h 45m

$334

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 9/3

6:00 am-9:51 am

1 stop4h 51m

Chicago O'Hare Intl

Sun 9/7

8:25 pm-1:34 am

1 stop4h 09m

$340

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 9/3

2:45 pm-6:25 pm

1 stop4h 40m

Chicago O'Hare Intl

Sun 9/7

6:06 pm-9:35 pm

Nonstop2h 29m

$341

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 9/19

6:33 am-8:00 am

Nonstop2h 27m

Chicago O'Hare Intl

Mon 9/22

9:31 pm-9:58 am

1 stop11h 27m

$342

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 10/7

6:33 am-8:00 am

Nonstop2h 27m

Chicago O'Hare Intl

Sun 10/12

6:00 am-11:45 am

1 stop4h 45m

$343

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 9/19

7:50 am-4:43 pm

1 stop9h 53m

Chicago O'Hare Intl

Mon 9/22

5:30 pm-4:19 pm

2 stops21h 49m

$344

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 9/19

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Mon 9/22

5:30 pm-4:19 pm

2 stops21h 49m

$345

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 May is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around $448.

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 $464. 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 $681.

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 $565 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $654. 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

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 $509 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 $232 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.

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

$184

Fastest flight time

2h 22m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ottawa in the past 72 hours is $184. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $322.
The fastest flight from Ottawa to Chicago O'Hare Intl Airport takes 2h 22m
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 24m.

  • 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 $326Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights
United AirlinesPriceFrom $376Free CancellationRating
7.4
8,900 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 $376 round-trip, up to an average price of $547. 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 $326 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $554. Air Canada operates 21 flights to Chicago O'Hare Intl Airport from Ottawa in an average week. Users have rated it 7.1/10 across 9,851 reviews.

Traveling to a place near Chicago?

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

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.

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago