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Cheap flights from Ottawa to Chicago from C$ 272

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 18/5. 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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Find the cheapest flights from Ottawa to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:00 a.m. - 6:38 p.m.
YOW
-
ORD
8h 38m
2 stops
Multiple Airlines Logo
1:49 p.m. - 12:15 p.m.
ORD
-
YOW
21h 26m
1 stop
C$ 537Multiple Airlines
Mon, 11 May - Wed, 13 May
Multiple Airlines Logo
2:20 p.m. - 6:38 p.m.
YOW
-
ORD
5h 18m
1 stop
Multiple Airlines Logo
7:33 p.m. - 3:00 p.m.
ORD
-
YOW
18h 27m
1 stop
C$ 538Multiple Airlines
Mon, 11 May - Thu, 14 May
Multiple Airlines Logo
9:05 a.m. - 6:38 p.m.
YOW
-
ORD
10h 33m
1 stop
Multiple Airlines Logo
1:49 p.m. - 12:15 p.m.
ORD
-
YOW
21h 26m
1 stop
C$ 540Multiple Airlines
Mon, 11 May - Wed, 13 May
Multiple Airlines Logo
7:00 a.m. - 12:37 p.m.
YOW
-
ORD
30h 37m
1 stop
Multiple Airlines Logo
12:59 p.m. - 12:17 p.m.
ORD
-
YOW
22h 18m
1 stop
C$ 547Multiple Airlines
Mon, 1 Jun - Thu, 4 Jun
Multiple Airlines Logo
8:00 a.m. - 8:11 p.m.
YOW
-
ORD
13h 11m
2 stops
Multiple Airlines Logo
7:33 p.m. - 3:00 p.m.
ORD
-
YOW
18h 27m
1 stop
C$ 552Multiple Airlines
Tue, 12 May - Thu, 14 May
Multiple Airlines Logo
9:05 a.m. - 8:11 p.m.
YOW
-
ORD
12h 06m
1 stop
Multiple Airlines Logo
7:33 p.m. - 3:00 p.m.
ORD
-
YOW
18h 27m
1 stop
C$ 553Multiple Airlines
Tue, 12 May - Thu, 14 May
Multiple Airlines Logo
9:05 a.m. - 8:11 p.m.
YOW
-
ORD
12h 06m
1 stop
Multiple Airlines Logo
1:49 p.m. - 12:15 p.m.
ORD
-
YOW
21h 26m
1 stop
C$ 555Multiple Airlines
Tue, 12 May - Wed, 13 May
Multiple Airlines Logo
7:00 a.m. - 7:51 p.m.
YOW
-
ORD
13h 51m
2 stops
Multiple Airlines Logo
1:49 p.m. - 12:15 p.m.
ORD
-
YOW
21h 26m
1 stop
C$ 562Multiple Airlines
Fri, 8 May - Mon, 11 May
Multiple Airlines Logo
2:20 p.m. - 4:11 p.m.
YOW
-
ORD
26h 51m
1 stop
Multiple Airlines Logo
5:10 a.m. - 3:15 p.m.
ORD
-
YOW
9h 05m
1 stop
C$ 563Multiple Airlines
Fri, 21 Aug - Mon, 31 Aug
Multiple Airlines Logo
7:00 a.m. - 11:13 p.m.
YOW
-
ORD
17h 13m
1 stop
Multiple Airlines Logo
5:05 a.m. - 8:05 p.m.
ORD
-
YOW
14h 00m
2 stops
C$ 564Multiple Airlines
Fri, 29 May - Tue, 2 Jun

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
29 May
YOW8:40 a.m.Ottawa
6h 37m
1 stop
ORD2:17 p.m.Chicago O'Hare Intl
31 May
ORD8:08 a.m.Chicago O'Hare Intl
5h 47m
1 stop
YOW2:55 p.m.Ottawa
C$ 570
American Airlines
30 May
YOW8:40 a.m.Ottawa
6h 37m
1 stop
ORD2:17 p.m.Chicago O'Hare Intl
2 Jun
ORD8:08 a.m.Chicago O'Hare Intl
5h 47m
1 stop
YOW2:55 p.m.Ottawa
C$ 623
American Airlines
7 May
YOW8:40 a.m.Ottawa
6h 40m
1 stop
ORD2:20 p.m.Chicago O'Hare Intl
8 May
ORD8:06 a.m.Chicago O'Hare Intl
5h 49m
1 stop
YOW2:55 p.m.Ottawa
C$ 694

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
6 May
YOW9:00 a.m.Ottawa
5h 25m
1 stop
ORD1:25 p.m.Chicago O'Hare Intl
12 May
ORD9:55 a.m.Chicago O'Hare Intl
6h 16m
1 stop
YOW5:11 p.m.Ottawa
C$ 784
Air Canada
8 May
YOW10:00 a.m.Ottawa
5h 55m
1 stop
ORD2:55 p.m.Chicago O'Hare Intl
9 May
ORD8:35 p.m.Chicago O'Hare Intl
4h 01m
1 stop
YOW1:36 a.m.Ottawa
C$ 840
Air Canada
6 May
YOW5:25 p.m.Ottawa
2h 33m
ORD6:58 p.m.Chicago O'Hare Intl
12 May
ORD9:55 a.m.Chicago O'Hare Intl
6h 16m
1 stop
YOW5:11 p.m.Ottawa
C$ 914

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 25 April 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

Mon 11/5

11:00 a.m.-6:38 p.m.

2 stops8h 38m

Chicago O'Hare Intl

Wed 13/5

1:49 p.m.-12:15 p.m.

1 stop21h 26m

C$ 537
Quickest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 11/5

2:20 p.m.-6:38 p.m.

1 stop5h 18m

Chicago O'Hare Intl

Thu 14/5

7:33 p.m.-3:00 p.m.

1 stop18h 27m

C$ 538

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 11/5

9:05 a.m.-6:38 p.m.

1 stop10h 33m

Chicago O'Hare Intl

Wed 13/5

1:49 p.m.-12:15 p.m.

1 stop21h 26m

C$ 540

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 1/6

7:00 a.m.-12:37 p.m.

1 stop30h 37m

Chicago O'Hare Intl

Thu 4/6

12:59 p.m.-12:17 p.m.

1 stop22h 18m

C$ 547

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 12/5

8:00 a.m.-8:11 p.m.

2 stops13h 11m

Chicago O'Hare Intl

Thu 14/5

7:33 p.m.-3:00 p.m.

1 stop18h 27m

C$ 552

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 12/5

9:05 a.m.-8:11 p.m.

1 stop12h 06m

Chicago O'Hare Intl

Thu 14/5

7:33 p.m.-3:00 p.m.

1 stop18h 27m

C$ 553

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 12/5

9:05 a.m.-8:11 p.m.

1 stop12h 06m

Chicago O'Hare Intl

Wed 13/5

1:49 p.m.-12:15 p.m.

1 stop21h 26m

C$ 555

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 8/5

7:00 a.m.-7:51 p.m.

2 stops13h 51m

Chicago O'Hare Intl

Mon 11/5

1:49 p.m.-12:15 p.m.

1 stop21h 26m

C$ 562

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 21/8

2:20 p.m.-4:11 p.m.

1 stop26h 51m

Chicago O'Hare Intl

Mon 31/8

5:10 a.m.-3:15 p.m.

1 stop9h 05m

C$ 563

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 29/5

7:00 a.m.-11:13 p.m.

1 stop17h 13m

Chicago O'Hare Intl

Tue 2/6

5:05 a.m.-8:05 p.m.

2 stops14h 00m

C$ 564

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, September 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$ 467. The month of October is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ottawa averaging around C$ 467.

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$ 703. 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$ 912.

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$ 732. 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$ 845 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?

You could potentially save up to 49% 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

C$ 313

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 C$ 313. The best round-trip flight deal from Ottawa to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 566.
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

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 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 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
Air CanadaPriceFrom C$ 419Free CancellationRating
7.1
10,971 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 458Free CancellationRating
7.4
9,657 reviews
Search United Airlines flights

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

    United Airlines operates around 25 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$ 565, but momondo users have found United Airlines deals from Ottawa to Chicago O'Hare Intl Airport from as low as C$ 458 round-trip. United Airlines has been scored 7.4/10 in 9,657 reviews.

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

    Air Canada (7.1/10 from 10,971 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$ 547, 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.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Schaumburg
Des Plaines
Merrillville
Rosemont
Northbrook
Tinley Park
Skokie
Great Lakes
Wheeling
Hammond
Glenview
Harvey
Naperville
Munster
Hoffman Estates
Elmhurst
Harvard
DeKalb
Kankakee
Elk Grove Village

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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