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Cheap flights from Chicago to Ottawa from C$ 140

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Ottawa departing on 13/9. 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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Find the cheapest flights from Chicago to Ottawa (CHI-YOW)

Cheap round-trip flights

Logo
9:35 a.m. - 6:09 p.m.MDW-YOW
7h 34m1 stop
Logo
10:50 a.m. - 11:25 p.m.YOW-MDW
13h 35m1 stop
C$ 443
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Tue, 21 Oct - Thu, 23 Oct
Logo
9:35 a.m. - 6:09 p.m.MDW-YOW
7h 34m1 stop
Logo
4:05 p.m. - 1:38 p.m.YOW-MDW
22h 33m2 stops
C$ 449
Find Deal
Wed, 1 Oct - Mon, 6 Oct
Porter Airlines Logo
9:35 a.m. - 4:34 p.m.MDW-YOW
5h 59m1 stop
Porter Airlines Logo
1:25 p.m. - 4:24 p.m.YOW-MDW
3h 59m1 stop
C$ 453Porter Airlines
Find Deal
Wed, 8 Oct - Tue, 14 Oct
WestJet Logo
1:40 p.m. - 4:19 p.m.ORD-YOW
25h 39m1 stop
WestJet Logo
6:00 a.m. - 4:43 p.m.YOW-ORD
11h 43m1 stop
C$ 455WestJet
Find Deal
Sat, 11 Oct - Sat, 18 Oct
Porter Airlines Logo
9:35 a.m. - 4:34 p.m.MDW-YOW
5h 59m1 stop
Porter Airlines Logo
1:25 p.m. - 4:24 p.m.YOW-MDW
3h 59m1 stop
C$ 460Porter Airlines
Find Deal
Fri, 3 Oct - Mon, 6 Oct
WestJet Logo
5:30 p.m. - 6:45 a.m.ORD-YOW
12h 15m1 stop
WestJet Logo
6:00 a.m. - 4:43 p.m.YOW-ORD
11h 43m1 stop
C$ 471WestJet
Find Deal
Sun, 12 Oct - Sat, 18 Oct
Air Canada Logo
3:35 p.m. - 10:04 p.m.ORD-YOW
5h 29m1 stop
Air Canada Logo
5:15 a.m. - 3:04 p.m.YOW-ORD
10h 49m1 stop
C$ 530Air Canada
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Sat, 20 Sep - Mon, 22 Sep
Air Canada Logo
3:35 p.m. - 10:04 p.m.ORD-YOW
5h 29m1 stop
Air Canada Logo
5:25 p.m. - 6:54 p.m.YOW-ORD
2h 29mdirect
C$ 545Air Canada
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Sat, 20 Sep - Mon, 22 Sep
United Airlines Logo
6:06 p.m. - 9:35 p.m.ORD-YOW
2h 29mdirect
United Airlines Logo
6:33 a.m. - 8:00 a.m.YOW-ORD
2h 27mdirect
C$ 554United Airlines
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Sat, 11 Oct - Sun, 19 Oct
United Airlines Logo
6:00 a.m. - 12:16 p.m.ORD-YOW
5h 16m1 stop
United Airlines Logo
6:33 a.m. - 8:00 a.m.YOW-ORD
2h 27mdirect
C$ 568United Airlines
Find Deal
Sat, 4 Oct - Mon, 6 Oct

Air Canada flights from Chicago to Ottawa

Our best Air Canada deals on Chicago to Ottawa flight tickets
Air Canada
20 Sep
ORD3:35 p.m.Chicago O'Hare Intl
5h 29m
1 stop
YOW10:04 p.m.Ottawa
22 Sep
YOW5:15 a.m.Ottawa
10h 49m
1 stop
ORD3:04 p.m.Chicago O'Hare Intl
C$ 530
Find similar
Air Canada
20 Sep
ORD3:35 p.m.Chicago O'Hare Intl
5h 29m
1 stop
YOW10:04 p.m.Ottawa
22 Sep
YOW5:25 p.m.Ottawa
2h 29m
ORD6:54 p.m.Chicago O'Hare Intl
C$ 545
Find similar
Air Canada
10 Sep
ORD9:55 a.m.Chicago O'Hare Intl
6h 09m
1 stop
YOW5:04 p.m.Ottawa
17 Sep
YOW11:05 a.m.Ottawa
4h 50m
1 stop
ORD2:55 p.m.Chicago O'Hare Intl
C$ 577
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Porter Airlines flights from Chicago to Ottawa

Our best Porter Airlines deals on Chicago to Ottawa flight tickets
Porter Airlines
8 Oct
MDW9:35 a.m.Chicago Midway
5h 59m
1 stop
YOW4:34 p.m.Ottawa
14 Oct
YOW1:25 p.m.Ottawa
3h 59m
1 stop
MDW4:24 p.m.Chicago Midway
C$ 453
Find similar
Porter Airlines
3 Oct
MDW9:35 a.m.Chicago Midway
5h 59m
1 stop
YOW4:34 p.m.Ottawa
6 Oct
YOW1:25 p.m.Ottawa
3h 59m
1 stop
MDW4:24 p.m.Chicago Midway
C$ 460
Find similar
Porter Airlines
9 Oct
MDW9:35 a.m.Chicago Midway
5h 59m
1 stop
YOW4:34 p.m.Ottawa
16 Oct
YOW1:25 p.m.Ottawa
3h 59m
1 stop
MDW4:24 p.m.Chicago Midway
C$ 468
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Ottawa 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 27 August 2025.
Use the filters below to find and compare flights from Chicago to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 21/10

9:35 a.m.-6:09 p.m.

1 stop7h 34m

Ottawa

Thu 23/10

10:50 a.m.-11:25 p.m.

1 stop13h 35m

C$ 443

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 1/10

9:35 a.m.-6:09 p.m.

1 stop7h 34m

Ottawa

Mon 6/10

4:05 p.m.-1:38 p.m.

2 stops22h 33m

C$ 449

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 8/10

9:35 a.m.-4:34 p.m.

1 stop5h 59m

Ottawa

Tue 14/10

1:25 p.m.-4:24 p.m.

1 stop3h 59m

C$ 453

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 11/10

1:40 p.m.-4:19 p.m.

1 stop25h 39m

Ottawa

Sat 18/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

C$ 455

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 3/10

9:35 a.m.-4:34 p.m.

1 stop5h 59m

Ottawa

Mon 6/10

1:25 p.m.-4:24 p.m.

1 stop3h 59m

C$ 460

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 12/10

5:30 p.m.-6:45 a.m.

1 stop12h 15m

Ottawa

Sat 18/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

C$ 471

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 20/9

3:35 p.m.-10:04 p.m.

1 stop5h 29m

Ottawa

Mon 22/9

5:15 a.m.-3:04 p.m.

1 stop10h 49m

C$ 530

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 20/9

3:35 p.m.-10:04 p.m.

1 stop5h 29m

Ottawa

Mon 22/9

5:25 p.m.-6:54 p.m.

Nonstop2h 29m

C$ 545

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 11/10

6:06 p.m.-9:35 p.m.

Nonstop2h 29m

Ottawa

Sun 19/10

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

Nonstop2h 27m

C$ 554

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 4/10

6:00 a.m.-12:16 p.m.

1 stop5h 16m

Ottawa

Mon 6/10

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

Nonstop2h 27m

C$ 568

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 Ottawa from

How to get the cheapest flight ticket from Chicago to Ottawa

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 cheapest month to fly to Ottawa?

The month of May is, on average, the cheapest month to fly to Ottawa from Chicago, with most prices found around C$ 469. If you aren’t able to travel to Ottawa during the month of May, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 587.

What is the cheapest day to depart on your flight to Ottawa?

Our data shows that Thursday is the least expensive day to fly to Ottawa. Tickets to fly out on this day can be as low as C$ 513. Flights from Chicago to Ottawa on a Sunday will generally be more expensive and average around C$ 1,007. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ottawa?

Our most recent data shows that the best time of day to fly to Ottawa is in the afternoon. Flights from Chicago to Ottawa during this time can be as low as C$ 513. In the morning is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 843 per ticket.

What is the cheapest Chicago to Ottawa flight route?

Fly from Chicago O'Hare Intl to Ottawa for the best Chicago - Ottawa flight prices

What cabin class options are available on Chicago to Ottawa flights?

There are 3 cabin classes available to choose from on Chicago to Ottawa flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Chicago to Ottawa flight prices changed over time?

As of August 2025, prices for Chicago to Ottawa flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Ottawa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Ottawa (CHI to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Ottawa

Fastest flight time

2h 06m

Direct flights

Every day

Airports in Ottawa

1 airport
The fastest flight from Chicago to Ottawa takes 2h 06m
Direct flights go from Chicago to Ottawa every day.
There is 1 airport near Ottawa: Ottawa (YOW)
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  • How far is Chicago to Ottawa by plane?

    Chicago and Ottawa are 1035.5 km apart from one another. A reasonable flight in good conditions will take 2h 29m.

  • When did momondo last update prices for flights from Chicago to Ottawa Airport?

    Prices for flights from Chicago to Ottawa Airport are updated daily.

  • How old do you have to be to fly from Chicago to Ottawa Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The necessary travel and health documents for your Ottawa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago to Ottawa?

  • What is the most popular airline from Chicago to Ottawa?

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Pembroke
Brockville
Smiths Falls
Perth
Wakefield
Calabogie
Petawawa
Winchester
Prescott

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Ottawa?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Ottawa . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Chicago to Ottawa with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to Ottawa flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Ottawa?

momondo provides multiple filters to help you find the best flight to Ottawa from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to Ottawa right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Chicago to Ottawa 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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