What is the cheapest airline that flies from Chicago to Ottawa?

Air Canada, WestJet, and Porter Airlines are the most popular carriers operating from Chicago to Ottawa

How many flights depart from Chicago to Ottawa on average per day?

As of August 2025, 12 flights take off from Chicago and land in Ottawa each day. The most common flight departure time for this route is 6:00PM, with 46% of daily flights taking off in the evening.

What airlines fly to Ottawa?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Ottawa from Chicago according to our data. Air Canada is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Ottawa. Keep in mind that there are 4 different airlines that fly to Ottawa on a routine basis, so you have a few additional options to choose from.

How many flights depart from Chicago to Ottawa on average per week?

84 flights are operational weekly from Chicago to Ottawa as of August 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

Prices for flights from Chicago to Ottawa Airport refresh daily.

How many operators does momondo search for flights from Chicago to Ottawa Airport?

There are 3 operators available for flights from Chicago to Ottawa Airport as of August 2025.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

$145 Cheap Flights from Chicago to Ottawa (CHI-YOW) in 2025

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Find the cheapest flights from Chicago to Ottawa (CHI-YOW)

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

10:35 am - 8:24 amORD-YOW

20h 49m1 stop

5:50 pm - 11:25 pmYOW-ORD

6h 35m1 stop

$302Air Canada

Find Deal

Sat, Sep 6 - Sun, Sep 7

9:35 am - 6:09 pmMDW-YOW

7h 34m1 stop

1:25 pm - 4:24 pmYOW-MDW

3h 59m1 stop

$307Porter Airlines

Find Deal

Wed, Oct 1 - Mon, Oct 6

9:35 am - 6:09 pmMDW-YOW

7h 34m1 stop

10:50 am - 11:25 pmYOW-MDW

13h 35m1 stop

$320

Find Deal

Tue, Oct 21 - Thu, Oct 23

9:35 am - 4:34 pmMDW-YOW

5h 59m1 stop

1:25 pm - 4:24 pmYOW-MDW

3h 59m1 stop

$327Porter Airlines

Find Deal

Wed, Oct 8 - Tue, Oct 14

2:20 pm - 12:45 amORD-YOW

9h 25m1 stop

5:45 pm - 1:35 pmYOW-ORD

20h 50m1 stop

$329WestJet

Find Deal

Fri, Dec 5 - Sun, Dec 7

5:30 pm - 6:45 amORD-YOW

12h 15m1 stop

6:00 am - 4:43 pmYOW-ORD

11h 43m1 stop

$340WestJet

Find Deal

Sun, Oct 12 - Sat, Oct 18

6:06 pm - 9:35 pmORD-YOW

2h 29mnonstop

5:25 pm - 6:54 pmYOW-ORD

2h 29mnonstop

$400United Airlines

Find Deal

Sun, Oct 12 - Sat, Oct 18

6:00 am - 11:45 amORD-YOW

4h 45m1 stop

5:25 pm - 6:54 pmYOW-ORD

2h 29mnonstop

$410United Airlines

Find Deal

Sun, Oct 12 - Sat, Oct 18

9:55 am - 5:04 pmORD-YOW

6h 09m1 stop

11:05 am - 2:55 pmYOW-ORD

4h 50m1 stop

$417Air Canada

Find Deal

Wed, Sep 10 - Wed, Sep 17

10:50 am - 2:04 pmORD-YOW

2h 14mnonstop

6:33 am - 8:00 amYOW-ORD

2h 27mnonstop

$445Lufthansa

Find Deal

Sat, Sep 6 - Sun, Sep 7

WestJet flights from Chicago to Ottawa

Our best WestJet deals on Chicago to Ottawa flight tickets

WestJet

Dec 5

ORD2:20 pmChicago O'Hare Intl

9h 25m

1 stop

YOW12:45 amOttawa

Dec 7

YOW5:45 pmOttawa

20h 50m

1 stop

ORD1:35 pmChicago O'Hare Intl

$329

Find similar

WestJet

Oct 12

ORD5:30 pmChicago O'Hare Intl

12h 15m

1 stop

YOW6:45 amOttawa

Oct 18

YOW6:00 amOttawa

11h 43m

1 stop

ORD4:43 pmChicago O'Hare Intl

$340

Find similar

WestJet

Oct 11

ORD1:40 pmChicago O'Hare Intl

25h 39m

1 stop

YOW4:19 pmOttawa

Oct 19

YOW7:15 pmOttawa

22h 28m

1 stop

ORD4:43 pmChicago O'Hare Intl

$341

Find similar

Porter Airlines flights from Chicago to Ottawa

Our best Porter Airlines deals on Chicago to Ottawa flight tickets

Porter Airlines

Oct 1

MDW9:35 amChicago Midway

7h 34m

1 stop

YOW6:09 pmOttawa

Oct 6

YOW1:25 pmOttawa

3h 59m

1 stop

MDW4:24 pmChicago Midway

$307

Find similar

Porter Airlines

Oct 8

MDW9:35 amChicago Midway

5h 59m

1 stop

YOW4:34 pmOttawa

Oct 14

YOW1:25 pmOttawa

3h 59m

1 stop

MDW4:24 pmChicago Midway

$327

Find similar

Porter Airlines

Oct 9

MDW9:35 amChicago Midway

5h 59m

1 stop

YOW4:34 pmOttawa

Oct 16

YOW1:25 pmOttawa

3h 59m

1 stop

MDW4:24 pmChicago Midway

$338

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 9/6

10:35 am-8:24 am

1 stop20h 49m

Ottawa

Sun 9/7

5:50 pm-11:25 pm

1 stop6h 35m

$302

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 10/1

9:35 am-6:09 pm

1 stop7h 34m

Ottawa

Mon 10/6

1:25 pm-4:24 pm

1 stop3h 59m

$307

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Tue 10/21

9:35 am-6:09 pm

1 stop7h 34m

Ottawa

Thu 10/23

10:50 am-11:25 pm

1 stop13h 35m

$320

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 10/8

9:35 am-4:34 pm

1 stop5h 59m

Ottawa

Tue 10/14

1:25 pm-4:24 pm

1 stop3h 59m

$327

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 12/5

2:20 pm-12:45 am

1 stop9h 25m

Ottawa

Sun 12/7

5:45 pm-1:35 pm

1 stop20h 50m

$329

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 10/12

5:30 pm-6:45 am

1 stop12h 15m

Ottawa

Sat 10/18

6:00 am-4:43 pm

1 stop11h 43m

$340

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 10/12

6:06 pm-9:35 pm

Nonstop2h 29m

Ottawa

Sat 10/18

5:25 pm-6:54 pm

Nonstop2h 29m

$400

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 10/12

6:00 am-11:45 am

1 stop4h 45m

Ottawa

Sat 10/18

5:25 pm-6:54 pm

Nonstop2h 29m

$410

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 9/10

9:55 am-5:04 pm

1 stop6h 09m

Ottawa

Wed 9/17

11:05 am-2:55 pm

1 stop4h 50m

$417

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 9/6

10:50 am-2:04 pm

Nonstop2h 14m

Ottawa

Sun 9/7

6:33 am-8:00 am

Nonstop2h 27m

$445

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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

Prices

Airlines

Other information

What is the cheapest month to fly to Ottawa?

In general, May is the cheapest month to fly from Chicago to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $339. The month of January is another great option to travel to Ottawa, with average flight prices from Chicago averaging around $424.

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

The cheapest day to depart from Chicago to Ottawa is on a Thursday. Travelers who choose to depart for Ottawa on a Thursday will often find tickets for as low as $552. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Tuesday is $697.

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

In the morning is the cheapest time of day to fly from Chicago to Ottawa when you can find flight prices for as low as $560. Flying to Ottawa in the morning 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 afternoon when prices are $688 on average. Flights to Ottawa from Chicago in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 4 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.

Can stopping save me money on Chicago to Ottawa flights?

You could potentially save up to 29% on your flight if you consider stops on a Chicago to Ottawa flight.

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

Best Price Found	$263
Fastest flight time	2h 11m
Direct flights	Every day
Airports in Ottawa	1 airport

The best one-way flight to Ottawa from Chicago in the past 72 hours is $263. The best round-trip flight deal from Chicago to Ottawa found on momondo in the last 72 hours is $475.

The fastest flight from Chicago to Ottawa takes 2h 11m

Direct flights go from Chicago to Ottawa every day.

There is 1 airport near Ottawa: Ottawa (YOW)

Search flight deals

How far is Chicago to Ottawa by plane?
Chicago and Ottawa are 643.5 mi apart from one another. By plane, this route typically takes 2h 14m.
When did momondo last update prices for flights from Chicago to Ottawa Airport?
Prices for flights from Chicago to Ottawa Airport refresh daily.
How many operators does momondo search for flights from Chicago to Ottawa Airport?
There are 3 operators available for flights from Chicago to Ottawa Airport as of August 2025.
How old do you have to be to fly from Chicago to Ottawa Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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?
Based on momondo bookings for flights between Chicago and Ottawa, the leading plane model is Embraer 175 (Enhanced Winglets), making up 37.59% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet CRJ-550 with 33.91%, Embraer 170 with 5.16%, and Airbus A330-300 with 3.93%.
What is the most popular airline from Chicago to Ottawa?
momondo data reveals that the most frequently booked airline on the route from Chicago to Ottawa is United Airlines, representing 42% of all bookings. The subsequent popular airlines are Air Canada at 29% and Porter Airlines at 29%.

Best airlines flying from Chicago to Ottawa

Compare and see reviews for airlines that fly from Chicago to Ottawa with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $189	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Porter Airlines	PriceFrom $189	Free Cancellation	Rating 7.9 346 reviews	Search Porter Airlines flights
United Airlines	PriceFrom $236	Free Cancellation	Rating 7.4 8,943 reviews	Search United Airlines flights

United Airlines Flights From Chicago to Ottawa
United Airlines flies from Chicago to Ottawa around 21 times per week, with 8,943 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Chicago to Ottawa in the last 72 hours was $236 (round-trip), much lower than the average airfare cost of $561 for United Airlines flights on this route.
Air Canada Flights From Chicago to Ottawa
Air Canada is also a popular choice for this route. Air Canada flight deals for Chicago to Ottawa start from as low as $189 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $367. Air Canada operates 21 flights to Ottawa from Chicago in an average week. Users have rated it 7.1/10 across 10,000 reviews.

Gatineau

Smiths Falls

Calabogie

Brockville

Pembroke

Petawawa

Perth

Prescott

Winchester

Wakefield

Why use momondo?

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

Finding the right flight to Ottawa from Chicago 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 Ottawa quick and easy, saving you time and money.

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

Yes. All flights to Ottawa from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Chicago and Ottawa by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Ottawa from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ottawa 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.

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Cheap flights from Chicago to Ottawa from $145

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 9/16. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Chicago to Ottawa (CHI-YOW)

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WestJet flights from Chicago to Ottawa

Our best WestJet deals on Chicago to Ottawa flight tickets

Porter Airlines flights from Chicago to Ottawa

Our best Porter Airlines deals on Chicago to Ottawa flight tickets

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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?

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

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

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 4 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.

Can stopping save me money on Chicago to Ottawa flights?

You could potentially save up to 29% on your flight if you consider stops on a Chicago to Ottawa flight.

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.

What is the cheapest airline that flies from Chicago to Ottawa?

Air Canada, WestJet, and Porter Airlines are the most popular carriers operating from Chicago to Ottawa

What airlines fly to Ottawa?

How many flights depart from Chicago to Ottawa on average per day?

As of August 2025, 12 flights take off from Chicago and land in Ottawa each day. The most common flight departure time for this route is 6:00PM, with 46% of daily flights taking off in the evening.

How many flights depart from Chicago to Ottawa on average per week?

84 flights are operational weekly from Chicago to Ottawa as of August 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

When to book flights from Chicago to Ottawa

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

Best Price Found

Fastest flight time

Direct flights

Airports in Ottawa

How far is Chicago to Ottawa by plane?

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

How many operators does momondo search for flights from Chicago to Ottawa Airport?

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

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

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

What is the most popular airline from Chicago to Ottawa?

Best airlines flying from Chicago to Ottawa

Compare and see reviews for airlines that fly from Chicago to Ottawa with momondo

United Airlines Flights From Chicago to Ottawa

Air Canada Flights From Chicago to Ottawa

Traveling to a place near Ottawa?

Why use momondo?

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

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

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

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

An easier way to manage your Ottawa 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.

Get notified when prices go down

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

Find better results for your trip to Canada

Airports servicing Ontario