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$127+ Cheap flights from Chicago (CHI) to Ottawa (YOW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YOW
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Ottawa are usually found in May or September, booked 57 days in advance, depart on a Saturday or Thursday and return on a Saturday

Find flight deals from Chicago to Ottawa

Cheapest flights from Chicago to Ottawa
Explore the most affordable flight options available from Chicago to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:43 pmORD - YOW
1 stop31h 42mMultiple Airlines
Wed 12/104:15 pmYOW - ORD
1 stop22h 42mMultiple Airlines
Deal found 10/21$287
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/88:00 amORD - YOW
1 stop8h 13mMultiple Airlines
Tue 11/114:15 pmYOW - ORD
1 stop18h 32mMultiple Airlines
Deal found 10/21$297
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:15 amORD - YOW
1 stop10h 58mMultiple Airlines
Tue 11/44:15 pmYOW - ORD
1 stop9h 12mMultiple Airlines
Deal found 10/20$316
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:11 amORD - YOW
2 stops17h 14mMultiple Airlines
Sat 12/137:00 amYOW - ORD
1 stop14h 01mMultiple Airlines
Deal found 10/21$319
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:00 amORD - YOW
1 stop11h 25mMultiple Airlines
Sun 11/239:30 amYOW - ORD
1 stop31h 33mMultiple Airlines
Deal found 10/20$320
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:40 amORD - YOW
1 stop9h 45mMultiple Airlines
Mon 11/174:35 pmYOW - ORD
2 stops21h 10mMultiple Airlines
Deal found 10/20$333
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:40 amORD - YOW
1 stop9h 45mMultiple Airlines
Tue 11/189:25 amYOW - ORD
1 stop10h 09mMultiple Airlines
Deal found 10/20$334
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:20 amMDW - YOW
1 stop10h 05mMultiple Airlines
Sun 11/235:40 amYOW - MDW
1 stop10h 40mMultiple Airlines
Deal found 10/20$366
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/73:32 pmMDW - YOW
1 stop7h 26mMultiple Airlines
Mon 11/104:15 pmYOW - MDW
2 stops20h 23mMultiple Airlines
Deal found 10/21$397
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1311:00 amMDW - YOW
1 stop5h 29mMultiple Airlines
Sun 11/163:55 pmYOW - MDW
1 stop9h 00mMultiple Airlines
Deal found 10/20$400
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:27 pmMDW - YOW
2 stops21h 58mMultiple Airlines
Tue 11/183:55 pmYOW - MDW
1 stop9h 00mMultiple Airlines
Deal found 10/20$417
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:10 pmMDW - YOW
1 stop25h 03mMultiple Airlines
Mon 1/59:30 amYOW - MDW
1 stop13h 28mMultiple Airlines
Deal found 10/22$466

Cheap flight deals from Chicago to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$287
(Kiwi.com)

One-way from

$127
(Kiwi.com)

Popular in

November

Cheapest in

May

Average price

$427

Good round-trip deal

$268 or less

Good one-way deal

$463 or less
Provider with most accurate pricing for Chicago (CHI)-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Ottawa flights.
Search Deals
From Chicago (CHI) to Ottawa
Search Deals
One-way flight from Chicago (CHI) to Ottawa
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Ottawa.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Ottawa.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from Chicago to Ottawa that are best for you.

Fly from

Chicago

Fly to

Ottawa

Route

Depart

Return

Price

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 12/3

3:43 pm-12:25 am

1 stop31h 42m

Ottawa

Wed 12/10

4:15 pm-1:57 pm

1 stop22h 42m

$287

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 1/29

6:05 am-4:51 pm

2 stops9h 46m

Ottawa

Wed 2/11

4:15 pm-7:29 pm

1 stop28h 14m

$311

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 11/3

5:15 am-5:13 pm

1 stop10h 58m

Ottawa

Tue 11/4

4:15 pm-12:27 am

1 stop9h 12m

$316

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 12/6

6:11 am-12:25 am

2 stops17h 14m

Ottawa

Sat 12/13

7:00 am-8:01 pm

1 stop14h 01m

$319

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 1/16

7:00 am-5:13 pm

1 stop9h 13m

Ottawa

Mon 1/19

4:20 pm-10:23 pm

2 stops31h 03m

$333

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 12/29

3:10 pm-5:13 pm

1 stop25h 03m

Ottawa

Mon 1/5

4:20 pm-10:15 pm

2 stops30h 55m

$366

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 11/8

2:31 pm-9:54 pm

3 stops30h 23m

Ottawa

Tue 11/11

4:15 pm-9:47 am

3 stops42h 32m

$376

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 11/10

5:57 pm-5:25 pm

2 stops22h 28m

Ottawa

Mon 11/17

4:15 pm-9:47 am

1 stop18h 32m

$377

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 12/3

8:20 am-4:51 pm

3 stops31h 31m

Ottawa

Fri 12/12

4:15 pm-7:47 pm

2 stops28h 32m

$381

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 11/20

6:20 am-8:54 pm

2 stops13h 34m

Ottawa

Sun 11/23

5:40 am-3:20 pm

1 stop10h 40m

$386

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 33 results
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Compare providers for flights from Chicago to Ottawa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Ottawa in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Ottawa

How far ahead should I book a flight from Chicago to Ottawa?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Ottawa. Price data was last updated on October 17, 2025.

To ensure you get the cheapest price possible for a flight from Chicago to Ottawa, you should look to book at least 56 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago to Ottawa?

Currently, November is the cheapest month in which you can book a flight from Chicago to Ottawa (average of $131). Flying from Chicago to Ottawa in December is currently the most expensive (average of $263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to YOW?

Find hourly flight availability from Chicago to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

It’s typically best to fly out from Chicago to Ottawa in the afternoon. Doing so could potentially save you 17% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost to fly round-trip from Chicago to Ottawa?

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated October 22, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, United Airlines, and Air Canada from Chicago to Ottawa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
382 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
382 reviews
Porter Airlines
8.0
Very good
382 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,988 reviews
Porter Airlines
8.0
Very good
382 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,335 reviews
Porter Airlines
8.0
Very good
382 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Food

7.6

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ottawa from Chicago?

    Ottawa (YOW), located 6.6 mi from the city center, is the airport you fly into when you book flights from Chicago to Ottawa. 3 airlines have flights to Ottawa from Chicago on a regular basis. Booking flights from Chicago to Ottawa should not be difficult; the airport handles an average of 10 inbound flights from Chicago per day.

  • What are the cheapest airlines flying from Chicago to Ottawa round-trip?

    Flying on Air Canada is currently your cheapest option to Ottawa, with prices starting at $189. Additional round-trip tickets that might be worth considering are offered by Porter Airlines and United Airlines, with the lowest prices starting at $189 and $236, respectively. Air Canada is 59% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Chicago to Ottawa?

    The top 3 most reliable airlines when flying from Chicago to Ottawa are Avianca (90%), ANA (84%) and Air Canada (81%).

  • What are the cheapest flights from Chicago to Ottawa?

    While on average a flight from Chicago to Ottawa is generally $595, our data shows the cheapest flight currently is $181. When looking at the most popular route, (Chicago O'Hare Intl - Ottawa), you can expect to pay $287 for that flight.

  • Can I find deals for flights from Chicago to Ottawa that include hotel bookings?

    Yes. In addition to deals on Chicago to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Ottawa.

  • Can I find deals for business class flights from Chicago to Ottawa?

    Yes. Cheapflights offers flight deals from Chicago to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Ottawa?

    Currently, November is the cheapest month in which you can book a flight from Chicago to Ottawa (average of $131). Flying from Chicago to Ottawa in December is currently the most expensive (average of $263). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

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Alternative routes for Chicago to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
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Midway to Ottawa flights
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O'Hare Intl to Thunder Bay flights
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Champaign to Pearson Intl flights
Midway to Thunder Bay flights
Dubuque to Pearson Intl flights
Bloomington to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Kingston flights
Bloomington to Ottawa flights
Springfield to Pearson Intl flights

Top 3 airlines flying from Chicago to Ottawa

Discover the top 3 airlines that operate flights from Chicago to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$189Average$357FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$189Average$352FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$236Average$545FlexibilityNo cancel feeOn-time69%

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