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Cheap flights from Ottawa to Chicago from C$ 254

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 5/9. 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

United Airlines Logo
6:33 a.m. - 8:00 a.m.YOW-ORD
2h 27mdirect
United Airlines Logo
10:50 a.m. - 2:04 p.m.ORD-YOW
2h 14mdirect
C$ 446United Airlines
Find Deal
Wed, 3 Sep - Sun, 7 Sep
United Airlines Logo
6:33 a.m. - 8:00 a.m.YOW-ORD
2h 27mdirect
United Airlines Logo
10:50 a.m. - 2:04 p.m.ORD-YOW
2h 14mdirect
C$ 447United Airlines
Find Deal
Wed, 3 Sep - Sun, 7 Sep
United Airlines Logo
6:33 a.m. - 8:00 a.m.YOW-ORD
2h 27mdirect
United Airlines Logo
1:55 p.m. - 5:06 p.m.ORD-YOW
2h 11mdirect
C$ 450United Airlines
Find Deal
Thu, 4 Sep - Fri, 5 Sep
Air Canada Logo
6:00 a.m. - 9:51 a.m.YOW-ORD
4h 51m1 stop
Air Canada Logo
8:25 p.m. - 1:34 a.m.ORD-YOW
4h 09m1 stop
C$ 451Air Canada
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Air Canada Logo
6:00 a.m. - 9:51 a.m.YOW-ORD
4h 51m1 stop
Air Canada Logo
8:25 p.m. - 1:34 a.m.ORD-YOW
4h 09m1 stop
C$ 454Air Canada
Find Deal
Thu, 11 Sep - Thu, 18 Sep
WestJet Logo
7:50 a.m. - 4:43 p.m.YOW-ORD
9h 53m1 stop
WestJet Logo
5:30 p.m. - 2:46 p.m.ORD-YOW
20h 16m1 stop
C$ 457WestJet
Find Deal
Fri, 19 Sep - Mon, 22 Sep
United Airlines Logo
10:37 a.m. - 12:01 p.m.YOW-ORD
2h 24mdirect
United Airlines Logo
6:00 a.m. - 11:45 a.m.ORD-YOW
4h 45m1 stop
C$ 459United Airlines
Find Deal
Wed, 3 Sep - Sun, 7 Sep
WestJet Logo
7:50 a.m. - 4:43 p.m.YOW-ORD
9h 53m1 stop
WestJet Logo
5:30 p.m. - 4:19 p.m.ORD-YOW
21h 49m2 stops
C$ 464WestJet
Find Deal
Fri, 19 Sep - Mon, 22 Sep
Logo
9:05 a.m. - 2:55 p.m.YOW-ORD
6h 50m1 stop
Logo
5:05 a.m. - 12:22 a.m.ORD-YOW
18h 17m2 stops
C$ 530
Find Deal
Thu, 11 Sep - Thu, 18 Sep
Logo
3:25 p.m. - 4:10 p.m.YOW-ORD
25h 45m3 stops
Logo
5:05 a.m. - 12:22 a.m.ORD-YOW
18h 17m2 stops
C$ 543
Find Deal
Tue, 2 Sep - Thu, 11 Sep

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
11 Sep
YOW6:00 a.m.Ottawa
4h 51m
1 stop
ORD9:51 a.m.Chicago O'Hare Intl
18 Sep
ORD8:25 p.m.Chicago O'Hare Intl
4h 09m
1 stop
YOW1:34 a.m.Ottawa
C$ 451
Find similar
Air Canada
11 Sep
YOW6:00 a.m.Ottawa
4h 51m
1 stop
ORD9:51 a.m.Chicago O'Hare Intl
18 Sep
ORD8:25 p.m.Chicago O'Hare Intl
4h 09m
1 stop
YOW1:34 a.m.Ottawa
C$ 454
Find similar
Air Canada
28 Aug
YOW11:05 a.m.Ottawa
4h 50m
1 stop
ORD2:55 p.m.Chicago O'Hare Intl
4 Sep
ORD8:40 a.m.Chicago O'Hare Intl
4h 11m
1 stop
YOW1:51 p.m.Ottawa
C$ 513
Find similar

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
19 Sep
YOW7:50 a.m.Ottawa
9h 53m
1 stop
ORD4:43 p.m.Chicago O'Hare Intl
22 Sep
ORD5:30 p.m.Chicago O'Hare Intl
20h 16m
1 stop
YOW2:46 p.m.Ottawa
C$ 457
Find similar
WestJet
19 Sep
YOW7:50 a.m.Ottawa
9h 53m
1 stop
ORD4:43 p.m.Chicago O'Hare Intl
22 Sep
ORD5:30 p.m.Chicago O'Hare Intl
21h 49m
2 stops
YOW4:19 p.m.Ottawa
C$ 464
Find similar
WestJet
19 Sep
YOW6:00 a.m.Ottawa
11h 43m
1 stop
ORD4:43 p.m.Chicago O'Hare Intl
22 Sep
ORD5:30 p.m.Chicago O'Hare Intl
21h 49m
2 stops
YOW4:19 p.m.Ottawa
C$ 475
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 96,600 searches. Data last updated 30 July 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

Wed 3/9

6:33 a.m.-8:00 a.m.

Nonstop2h 27m

Chicago O'Hare Intl

Sun 7/9

10:50 a.m.-2:04 p.m.

Nonstop2h 14m

C$ 446

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 3/9

6:33 a.m.-8:00 a.m.

Nonstop2h 27m

Chicago O'Hare Intl

Sun 7/9

10:50 a.m.-2:04 p.m.

Nonstop2h 14m

C$ 447

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 4/9

6:33 a.m.-8:00 a.m.

Nonstop2h 27m

Chicago O'Hare Intl

Fri 5/9

1:55 p.m.-5:06 p.m.

Nonstop2h 11m

C$ 450

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 11/9

6:00 a.m.-9:51 a.m.

1 stop4h 51m

Chicago O'Hare Intl

Thu 18/9

8:25 p.m.-1:34 a.m.

1 stop4h 09m

C$ 451

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 11/9

6:00 a.m.-9:51 a.m.

1 stop4h 51m

Chicago O'Hare Intl

Thu 18/9

8:25 p.m.-1:34 a.m.

1 stop4h 09m

C$ 454

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 19/9

7:50 a.m.-4:43 p.m.

1 stop9h 53m

Chicago O'Hare Intl

Mon 22/9

5:30 p.m.-2:46 p.m.

1 stop20h 16m

C$ 457

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 3/9

10:37 a.m.-12:01 p.m.

Nonstop2h 24m

Chicago O'Hare Intl

Sun 7/9

6:00 a.m.-11:45 a.m.

1 stop4h 45m

C$ 459

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 19/9

7:50 a.m.-4:43 p.m.

1 stop9h 53m

Chicago O'Hare Intl

Mon 22/9

5:30 p.m.-4:19 p.m.

2 stops21h 49m

C$ 464

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 11/9

9:05 a.m.-2:55 p.m.

1 stop6h 50m

Chicago O'Hare Intl

Thu 18/9

5:05 a.m.-12:22 a.m.

2 stops18h 17m

C$ 530

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 2/9

3:25 p.m.-4:10 p.m.

3 stops25h 45m

Chicago O'Hare Intl

Thu 11/9

5:05 a.m.-12:22 a.m.

2 stops18h 17m

C$ 543

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?

In general, June 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$ 600. The month of May is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around C$ 616.

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 C$ 818. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, 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$ 933.

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$ 775. 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$ 915 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

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 C$ 700 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 C$ 319 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.

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$ 254

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 C$ 254. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 446.
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?

    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 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 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$ 463Free CancellationRating
7.4
8,896 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 501Free CancellationRating
7.1
9,837 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$ 496, but momondo users have found United Airlines deals from Ottawa to Chicago O'Hare Intl Airport from as low as C$ 336 round-trip. United Airlines has been scored 7.4/10 in 8,896 reviews.

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

    Air Canada (7.1/10 from 9,837 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$ 468, with deals from around C$ 364 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
Hoffman Estates
Lisle
Tinley Park
Glenview
Hammond
Naperville
Wheeling
Great Lakes
Munster
Des Plaines
Benton Harbor
Harvard
Merrillville
Schaumburg
Oak Brook
Elmhurst
Elk Grove Village
Bridgeview
Kenosha
Skokie

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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