What is the cheapest airline that flies from Ottawa to Chicago O'Hare Intl?

American Airlines is the most popular carrier operating from Ottawa to Chicago O'Hare Intl

Which airlines fly to Chicago O'Hare Intl Airport?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Ottawa according to our data. Air Canada is the first choice among our users, with 67% of people opting to fly with this airline when travelling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ottawa to Chicago O'Hare Intl Airport on average per day?

As of June 2026, 11 flights take off from Ottawa and land in Chicago O'Hare Intl Airport each day. The most common flight departure time for this route is 6:00a.m., with 75% of daily flights taking off at noon.

How many flights depart from Ottawa to Chicago O'Hare Intl Airport on average per week?

The number of flights available between Ottawa and Chicago O'Hare Intl Airport is 83 per week as of June 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

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?

As of June 2026, there are 2 operators available to choose from 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.

C$ 300 Cheap Flights from Ottawa to Chicago O'Hare Intl Airport in 2026

Q: What is the typical price of a round-trip flight between Ottawa and Chicago O'Hare Intl Airport?

Prices are currently low for flights on this route. Typical prices usually range from C$ 941 to C$ 508. The lowest price recently found on this route was C$ 550.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ottawa to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:55 a.m. - 2:35 p.m.

YOW

ORD

8h 40m

1 stop

11:45 a.m. - 8:05 a.m.

ORD

YOW

19h 20m

1 stop

C$ 550Multiple Airlines

Thu, 24 Sep - Sun, 27 Sep

8:40 a.m. - 2:05 p.m.

YOW

ORD

6h 25m

1 stop

9:40 a.m. - 4:49 p.m.

ORD

YOW

6h 09m

1 stop

C$ 580American Airlines

Wed, 21 Oct - Wed, 28 Oct

6:55 a.m. - 2:35 p.m.

YOW

ORD

8h 40m

1 stop

7:00 a.m. - 12:54 p.m.

ORD

YOW

4h 54m

1 stop

C$ 585Multiple Airlines

Wed, 23 Sep - Sat, 26 Sep

8:40 a.m. - 2:05 p.m.

YOW

ORD

6h 25m

1 stop

11:40 a.m. - 6:24 p.m.

ORD

YOW

5h 44m

1 stop

C$ 587American Airlines

Tue, 20 Oct - Tue, 27 Oct

8:40 a.m. - 2:20 p.m.

YOW

ORD

6h 40m

1 stop

8:03 a.m. - 2:55 p.m.

ORD

YOW

5h 52m

1 stop

C$ 606American Airlines

Sat, 19 Sep - Sun, 20 Sep

7:00 a.m. - 12:25 p.m.

YOW

ORD

6h 25m

1 stop

9:40 a.m. - 4:49 p.m.

ORD

YOW

6h 09m

1 stop

C$ 608American Airlines

Thu, 22 Oct - Wed, 28 Oct

7:00 a.m. - 12:44 p.m.

YOW

ORD

6h 44m

1 stop

2:38 p.m. - 9:20 p.m.

ORD

YOW

5h 42m

1 stop

C$ 629American Airlines

Fri, 24 Jul - Sun, 26 Jul

8:00 a.m. - 1:19 p.m.

YOW

ORD

6h 19m

1 stop

7:25 a.m. - 8:04 p.m.

ORD

YOW

11h 39m

1 stop

C$ 637Multiple Airlines

Fri, 10 Jul - Sun, 12 Jul

7:00 a.m. - 2:22 p.m.

YOW

ORD

8h 22m

1 stop

8:37 p.m. - 2:55 p.m.

ORD

YOW

17h 18m

1 stop

C$ 651American Airlines

Wed, 22 Jul - Wed, 29 Jul

7:00 a.m. - 3:26 p.m.

YOW

ORD

9h 26m

1 stop

3:20 p.m. - 8:04 p.m.

ORD

YOW

3h 44m

1 stop

C$ 654Multiple Airlines

Mon, 19 Oct - Wed, 21 Oct

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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

10 Sep

YOW10:40 a.m.Ottawa

11h 55m

1 stop

ORD9:35 p.m.Chicago O'Hare Intl

14 Sep

ORD7:00 a.m.Chicago O'Hare Intl

4h 54m

1 stop

YOW12:54 p.m.Ottawa

C$ 663

Porter Airlines

11 Sep

YOW5:55 p.m.Ottawa

4h 40m

1 stop

ORD9:35 p.m.Chicago O'Hare Intl

13 Sep

ORD3:20 p.m.Chicago O'Hare Intl

20h 34m

1 stop

YOW12:54 p.m.Ottawa

C$ 683

Porter Airlines

22 Jul

YOW7:00 a.m.Ottawa

6h 44m

1 stop

ORD12:44 p.m.Chicago O'Hare Intl

25 Jul

ORD8:37 p.m.Chicago O'Hare Intl

10h 28m

1 stop

YOW8:05 a.m.Ottawa

C$ 756

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

Our best American Airlines deals on Ottawa to Chicago O'Hare Intl Airport flight tickets

American Airlines

21 Oct

YOW8:40 a.m.Ottawa

6h 25m

1 stop

ORD2:05 p.m.Chicago O'Hare Intl

28 Oct

ORD9:40 a.m.Chicago O'Hare Intl

6h 09m

1 stop

YOW4:49 p.m.Ottawa

C$ 580

American Airlines

20 Oct

YOW8:40 a.m.Ottawa

6h 25m

1 stop

ORD2:05 p.m.Chicago O'Hare Intl

27 Oct

ORD11:40 a.m.Chicago O'Hare Intl

5h 44m

1 stop

YOW6:24 p.m.Ottawa

C$ 587

American Airlines

19 Sep

YOW8:40 a.m.Ottawa

6h 40m

1 stop

ORD2:20 p.m.Chicago O'Hare Intl

20 Sep

ORD8:03 a.m.Chicago O'Hare Intl

5h 52m

1 stop

YOW2:55 p.m.Ottawa

C$ 606

momondo Fare Finder

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 24/9

6:55 a.m.-2:35 p.m.

1 stop8h 40m

Chicago O'Hare Intl

Sun 27/9

11:45 a.m.-8:05 a.m.

1 stop19h 20m

C$ 550

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 21/10

8:40 a.m.-2:05 p.m.

1 stop6h 25m

Chicago O'Hare Intl

Wed 28/10

9:40 a.m.-4:49 p.m.

1 stop6h 09m

C$ 580

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 23/9

6:55 a.m.-2:35 p.m.

1 stop8h 40m

Chicago O'Hare Intl

Sat 26/9

7:00 a.m.-12:54 p.m.

1 stop4h 54m

C$ 585

Quickest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 20/10

8:40 a.m.-2:05 p.m.

1 stop6h 25m

Chicago O'Hare Intl

Tue 27/10

11:40 a.m.-6:24 p.m.

1 stop5h 44m

C$ 587

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 19/9

8:40 a.m.-2:20 p.m.

1 stop6h 40m

Chicago O'Hare Intl

Sun 20/9

8:03 a.m.-2:55 p.m.

1 stop5h 52m

C$ 606

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 22/10

7:00 a.m.-12:25 p.m.

1 stop6h 25m

Chicago O'Hare Intl

Wed 28/10

9:40 a.m.-4:49 p.m.

1 stop6h 09m

C$ 608

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 24/7

7:00 a.m.-12:44 p.m.

1 stop6h 44m

Chicago O'Hare Intl

Sun 26/7

2:38 p.m.-9:20 p.m.

1 stop5h 42m

C$ 629

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 10/7

8:00 a.m.-1:19 p.m.

1 stop6h 19m

Chicago O'Hare Intl

Sun 12/7

7:25 a.m.-8:04 p.m.

1 stop11h 39m

C$ 637

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 22/7

7:00 a.m.-2:22 p.m.

1 stop8h 22m

Chicago O'Hare Intl

Wed 29/7

8:37 p.m.-2:55 p.m.

1 stop17h 18m

C$ 651

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 19/10

7:00 a.m.-3:26 p.m.

1 stop9h 26m

Chicago O'Hare Intl

Wed 21/10

3:20 p.m.-8:04 p.m.

1 stop3h 44m

C$ 654

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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?

In general, October 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$ 478. The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around C$ 478.

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$ 730. 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$ 991.

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$ 748. 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$ 849 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 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?

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$ 408
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$ 408. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 595.

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

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

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?
As of June 2026, there are 2 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ottawa to Chicago O'Hare Intl Airport is Embraer 175 (Enhanced Winglets) (45.83% of total bookings). The next most popular plane models are Airbus A319 (11.90%), Embraer 195 E2 (10.12%), and Airbus A321-100/200 (4.76%).
What is the most popular airline from Ottawa to Chicago O'Hare Intl Airport?
momondo data reveals that the most frequently booked airline on the route from Ottawa to Chicago O'Hare Intl Airport is United Airlines, representing 78% of all bookings. The subsequent popular airline is Air Canada at 22%.

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 Canada	PriceFrom C$ 419	Free Cancellation	Rating 7.1 11,168 reviews		Search Air Canada flights
United Airlines	PriceFrom C$ 469	Free Cancellation	Rating 7.4 9,810 reviews		Search United Airlines flights

United Airlines Flights From Ottawa to Chicago O'Hare Intl Airport
United Airlines operates around 20 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$ 629, but momondo users have found United Airlines deals from Ottawa to Chicago O'Hare Intl Airport from as low as C$ 469 round-trip. United Airlines has been scored 7.4/10 in 9,810 reviews.
Air Canada Flights From Ottawa to Chicago O'Hare Intl Airport
Air Canada (7.1/10 from 11,168 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$ 805, with deals from around C$ 419 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.

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Elmhurst

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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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Cheap flights from Ottawa to Chicago from C$ 300

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 28/8. 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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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

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

Our best American Airlines deals on Ottawa to Chicago O'Hare Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ottawa to Chicago O'Hare Intl Airport that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Ottawa to Chicago O'Hare Intl Airport

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?

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

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

What is the cheapest Ottawa to Chicago O'Hare Intl flight route?

What cabin class options are available on Ottawa to Chicago O'Hare Intl Airport flights?

Can stopping save me money on Ottawa to Chicago O'Hare Intl Airport flights?

What is the cheapest airline that flies from Ottawa to Chicago O'Hare Intl?

Which airlines fly to Chicago O'Hare Intl Airport?

How many flights depart from Ottawa to Chicago O'Hare Intl Airport on average per day?

How many flights depart from Ottawa to Chicago O'Hare Intl Airport on average per week?

When to book flights from Ottawa to Chicago O'Hare Intl Airport

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

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

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

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

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Daily price changes in your inbox - only with Price Alerts.

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According to popular flight searches on momondo this year

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List of cabin classes available on flights landing in Chicago. Availability may vary depending on flight origin and airline.

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