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Cheap flights from Chicago to Ottawa from C$ 160

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 21/11. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YOW
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Chicago to Ottawa are usually found in May or January, booked 57 days in advance, depart on a Wednesday or Thursday and return on a Friday

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 17 September 2025.

Round-trip from

C$ 388

One-way from

C$ 160

Popular in

November

Cheapest in

May

Average price

C$ 737
15/10-22/10
  • 15/10-22/10
  • 2 total stops
  • 25h 56m total
  • Chicago to Ottawa
Search Deals
WestJet
  • WestJet
  • 21/11
  • 1 total stop
  • 9h 20m total
  • Chicago to Ottawa
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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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 17 September 2025.

Wed 15/109:35 a.m.MDW - YOW
1 stop7h 34mMultiple Airlines
Wed 22/104:25 p.m.YOW - MDW
1 stop18h 22mMultiple Airlines
Deal found 16/9C$ 388
Mon 6/105:05 a.m.ORD - YOW
1 stop11h 15mMultiple Airlines
Thu 16/104:25 p.m.YOW - ORD
1 stop27h 21mMultiple Airlines
Deal found 16/9C$ 413
Wed 1/106:44 p.m.ORD - YOW
1 stop21h 36mMultiple Airlines
Mon 6/103:50 p.m.YOW - ORD
1 stop27h 48mMultiple Airlines
Deal found 16/9C$ 414
Fri 21/112:20 p.m.ORD - YOW
1 stop9h 20mWestJet
Sun 23/115:45 p.m.YOW - ORD
1 stop20h 50mWestJet
Deal found 15/9C$ 415
Wed 8/106:00 a.m.ORD - YOW
1 stop9h 57mMultiple Airlines
Wed 15/103:50 p.m.YOW - ORD
1 stop8h 55mMultiple Airlines
Deal found 16/9C$ 418
Thu 30/102:20 p.m.ORD - YOW
1 stop9h 20mMultiple Airlines
Mon 3/115:40 a.m.YOW - ORD
2 stops17h 59mMultiple Airlines
Deal found 14/9C$ 421
Mon 6/105:05 a.m.ORD - YOW
1 stop11h 15mMultiple Airlines
Sat 18/103:50 p.m.YOW - ORD
1 stop8h 55mMultiple Airlines
Deal found 16/9C$ 424
Wed 22/107:43 p.m.ORD - YOW
2 stops27h 39mMultiple Airlines
Wed 29/109:30 a.m.YOW - ORD
1 stop13h 03mMultiple Airlines
Deal found 15/9C$ 425
Wed 22/109:35 a.m.MDW - YOW
1 stop5h 59mMultiple Airlines
Wed 29/109:30 a.m.YOW - MDW
1 stop24h 42mMultiple Airlines
Deal found 15/9C$ 426
Fri 10/107:43 p.m.ORD - YOW
1 stop20h 37mMultiple Airlines
Sun 12/107:50 a.m.YOW - ORD
1 stop9h 53mMultiple Airlines
Deal found 15/9C$ 431
Tue 21/105:05 a.m.ORD - YOW
1 stop11h 15mMultiple Airlines
Wed 22/103:50 p.m.YOW - ORD
1 stop8h 55mMultiple Airlines
Deal found 15/9C$ 435
Mon 6/105:05 a.m.ORD - YOW
1 stop11h 15mMultiple Airlines
Fri 17/103:50 p.m.YOW - ORD
1 stop8h 55mMultiple Airlines
Deal found 16/9C$ 436

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 17 September 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

Wed 15/10

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

1 stop7h 34m

Ottawa

Wed 22/10

4:25 p.m.-9:47 a.m.

1 stop18h 22m

C$ 388

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Fri 21/11

2:20 p.m.-12:40 a.m.

1 stop9h 20m

Ottawa

Sun 23/11

5:45 p.m.-1:35 p.m.

1 stop20h 50m

C$ 415

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 8/10

6:00 a.m.-4:57 p.m.

1 stop9h 57m

Ottawa

Wed 15/10

3:50 p.m.-11:45 p.m.

1 stop8h 55m

C$ 418

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Wed 22/10

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

1 stop5h 59m

Ottawa

Wed 29/10

9:30 a.m.-9:12 a.m.

1 stop24h 42m

C$ 426

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Thu 30/10

2:20 p.m.-12:40 a.m.

1 stop9h 20m

Ottawa

Mon 3/11

9:30 a.m.-9:33 p.m.

1 stop13h 03m

C$ 436

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Sun 19/10

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

1 stop12h 15m

Ottawa

Mon 20/10

3:50 p.m.-11:45 p.m.

1 stop8h 55m

C$ 455

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Wed 19/11

10:49 a.m.-12:42 a.m.

2 stops12h 53m

Ottawa

Sun 30/11

5:45 p.m.-1:35 p.m.

1 stop20h 50m

C$ 457

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Fri 3/10

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

1 stop5h 59m

Ottawa

Sun 5/10

1:15 p.m.-4:24 p.m.

1 stop4h 09m

C$ 486

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

Tue 21/10

5:05 a.m.-5:20 p.m.

1 stop11h 15m

Ottawa

Wed 22/10

3:45 p.m.-12:31 p.m.

2 stops21h 46m

C$ 488

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Mon 6/10

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

1 stop5h 59m

Ottawa

Fri 17/10

11:00 a.m.-4:24 p.m.

1 stop6h 24m

C$ 491

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 35 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

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 12 September 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, 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 17 September 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.

Weekly flight availability from Chicago to Ottawa

Explore weekly flight availability from Chicago to Ottawa. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 September 2025.

The most flights from CHI to YOW are scheduled on a Monday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

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 17 September 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
7.9
Good
365 reviews
Check prices

Overall

7.9

Comfort

7.9

Crew

8.6

Food

7.6

Boarding

8.2

Entertainment

7.0

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
7.9
Good
365 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Overall

7.9

Comfort

7.9

Crew

8.6

Food

7.6

Boarding

8.2

Entertainment

7.0

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
8,926 reviews
Porter Airlines
7.9
Good
365 reviews
Check prices

Overall

7.9

Comfort

7.9

Crew

8.6

Food

7.6

Boarding

8.2

Entertainment

7.0

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?

    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 12 flights from Chicago to Ottawa per day from 0 different airlines.

  • How long is the flight from Chicago to Ottawa?

    Airlines like WestJet and Porter Airlines fly from Chicago to Ottawa in about 5h 59m. The time it takes to get you to your destination can typically vary by up to 3h 21m. Airlines will cover a distance of 1048 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Chicago to Ottawa one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at C$ 249. Air Canada flights start at C$ 257 while deals on Porter Airlines start at C$ 266 one-way.

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

    Consider GoJet (84%), ANA (82%) or Avianca (80%) when booking your flight. These represent the most reliable airlines when flying from Chicago to Ottawa.

  • 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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