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Cheap flights from Chicago to Ottawa from C$ 171

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YOW
21 Aug — 28 Aug1
1 adult

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 16 August 2025.

Round-trip from

C$ 388

One-way from

C$ 171

Popular in

November

Cheapest in

May

Average price

C$ 799

Good round-trip deal

C$ 552 or less
4/9-8/9
  • 4/9-8/9
  • 2 total stops
  • 17h 58m total
  • Chicago to Ottawa
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26/9
  • 26/9
  • 2 total stops
  • 17h 01m total
  • Chicago to Ottawa
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Highest demand for flights based on searches. 7% potential increase in price (C$ 72 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 19 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Ottawa.
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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 16 August 2025.

Thu 4/99:35 a.m.MDW - YOW
1 stop6h 29mMultiple Airlines
Mon 8/95:55 a.m.YOW - MDW
1 stop11h 29mMultiple Airlines
Deal found 14/8C$ 388
Fri 5/99:35 a.m.MDW - YOW
1 stop6h 29mMultiple Airlines
Mon 8/95:55 a.m.YOW - MDW
1 stop11h 29mMultiple Airlines
Deal found 14/8C$ 391
Sun 12/105:30 p.m.ORD - YOW
1 stop30h 10mWestJet
Sat 18/106:00 a.m.YOW - ORD
1 stop11h 43mWestJet
Deal found 15/8C$ 424
Sat 11/105:30 p.m.ORD - YOW
1 stop23h 50mWestJet
Sun 19/106:00 a.m.YOW - ORD
1 stop11h 43mWestJet
Deal found 14/8C$ 427
Sat 20/99:35 a.m.MDW - YOW
1 stop7h 34mMultiple Airlines
Sun 28/94:25 p.m.YOW - MDW
1 stop15h 58mMultiple Airlines
Deal found 13/8C$ 438
Fri 12/95:30 p.m.ORD - YOW
1 stop20h 26mWestJet
Fri 19/95:15 p.m.YOW - ORD
1 stop20h 24mWestJet
Deal found 13/8C$ 442
Sat 27/91:40 p.m.ORD - YOW
1 stop25h 39mWestJet
Tue 30/96:00 a.m.YOW - ORD
1 stop11h 43mWestJet
Deal found 14/8C$ 443
Fri 12/99:35 a.m.MDW - YOW
1 stop13h 47mMultiple Airlines
Mon 15/95:55 a.m.YOW - MDW
1 stop11h 29mMultiple Airlines
Deal found 14/8C$ 446
Mon 29/98:49 p.m.ORD - YOW
1 stop19h 08mMultiple Airlines
Mon 6/103:50 p.m.YOW - ORD
1 stop27h 34mMultiple Airlines
Deal found 15/8C$ 449
Sat 13/99:35 a.m.MDW - YOW
1 stop13h 47mMultiple Airlines
Mon 15/91:25 p.m.YOW - MDW
1 stop3h 59mMultiple Airlines
Deal found 14/8C$ 451
Fri 5/99:35 a.m.MDW - YOW
1 stop6h 29mPorter Airlines
Mon 8/911:00 a.m.YOW - MDW
1 stop6h 24mPorter Airlines
Deal found 14/8C$ 458
Fri 12/95:30 p.m.ORD - YOW
1 stop18h 30mMultiple Airlines
Mon 15/93:50 p.m.YOW - ORD
1 stop20h 02mMultiple Airlines
Deal found 14/8C$ 461

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 629,999 searches. Data last updated 16 August 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

MDW - YOW

MDWYOW

Chicago Midway

Thu 4/9

9:35 a.m.-5:04 p.m.

1 stop6h 29m

Ottawa

Mon 8/9

5:55 a.m.-4:24 p.m.

1 stop11h 29m

C$ 388

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 5/9

9:35 a.m.-5:04 p.m.

1 stop6h 29m

Ottawa

Mon 8/9

5:55 a.m.-4:24 p.m.

1 stop11h 29m

C$ 391

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 12/10

5:30 p.m.-12:40 a.m.

1 stop30h 10m

Ottawa

Sat 18/10

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

1 stop11h 43m

C$ 424

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 11/10

5:30 p.m.-6:20 p.m.

1 stop23h 50m

Ottawa

Sun 19/10

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

1 stop11h 43m

C$ 427

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Sat 20/9

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

1 stop7h 34m

Ottawa

Sun 28/9

4:25 p.m.-7:23 a.m.

1 stop15h 58m

C$ 438

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 12/9

5:30 p.m.-2:56 p.m.

1 stop20h 26m

Ottawa

Fri 19/9

5:15 p.m.-12:39 p.m.

1 stop20h 24m

C$ 442

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 10/10

5:30 p.m.-2:56 p.m.

1 stop20h 26m

Ottawa

Sun 12/10

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

1 stop9h 53m

C$ 442

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sat 27/9

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

1 stop25h 39m

Ottawa

Tue 30/9

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

1 stop11h 43m

C$ 443

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 12/9

9:35 a.m.-12:22 a.m.

1 stop13h 47m

Ottawa

Mon 15/9

5:55 a.m.-4:24 p.m.

1 stop11h 29m

C$ 446

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Mon 29/9

8:49 p.m.-4:57 p.m.

1 stop19h 08m

Ottawa

Mon 6/10

3:50 p.m.-6:24 p.m.

1 stop27h 34m

C$ 449

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/8

Showing 1-10 of 36 results
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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

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

Currently, October is the cheapest month in which you can book a flight from Chicago to Ottawa (average of C$ 224). Flying from Chicago to Ottawa in December is currently the most expensive (average of C$ 326). 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 16 August 2025.

When flying from Chicago to Ottawa, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 40% versus a flight in the morning.

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 16 August 2025.
Get a feel of what it's like to fly with Porter Airlines and United Airlines from Chicago to Ottawa by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
332 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,916 reviews
Porter Airlines
8.0
Very good
332 reviews
Check prices

Crew

8.7

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

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?

    If you book a flight to Ottawa from Chicago, you will be flying to Ottawa, which is the city’s only airport. Ottawa (YOW) is located 10.6 km from the centre of Ottawa. There are 10 flights from Chicago to Ottawa per day from 0 different airlines.

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

    Consider GoJet (79%), ANA (78%) or Air Canada (77%) when booking your flight. These represent the most reliable airlines when flying from Chicago to Ottawa.

  • What are the cheapest flights from Chicago to Ottawa?

    On average you can expect to pay C$ 552 for a flight from Chicago to Ottawa. The cheapest flight overall is C$ 308 while the most popular route, (Chicago O'Hare Intl - Ottawa) is currently priced at C$ 449.

  • 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, October is the cheapest month in which you can book a flight from Chicago to Ottawa (average of C$ 224). Flying from Chicago to Ottawa in December is currently the most expensive (average of C$ 326). 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

Travelling to a place near Ottawa?

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

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