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Cheap flights from Chicago to Ottawa from C$ 178

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YOW
21 nov. — 28 nov.1
1 adult
1 adult, Economy

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

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Enter your travel dates to find the best prices.

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 22 octubre 2025.

mié. 3/123:43 p.m.ORD - YOW
1 stop31h 42mMultiple Airlines
mié. 10/124:15 p.m.YOW - ORD
1 stop22h 42mMultiple Airlines
Deal found 21/10C$ 403
sáb. 8/118:00 a.m.ORD - YOW
1 stop8h 13mMultiple Airlines
mar. 11/114:15 p.m.YOW - ORD
1 stop18h 32mMultiple Airlines
Deal found 21/10C$ 417
lun. 3/115:15 a.m.ORD - YOW
1 stop10h 58mMultiple Airlines
mar. 4/114:15 p.m.YOW - ORD
1 stop9h 12mMultiple Airlines
Deal found 20/10C$ 444
sáb. 6/126:11 a.m.ORD - YOW
2 stops17h 14mMultiple Airlines
sáb. 13/127:00 a.m.YOW - ORD
1 stop14h 01mMultiple Airlines
Deal found 21/10C$ 448
jue. 20/115:00 a.m.ORD - YOW
1 stop11h 25mMultiple Airlines
dom. 23/119:30 a.m.YOW - ORD
1 stop31h 33mMultiple Airlines
Deal found 20/10C$ 449
jue. 13/116:40 a.m.ORD - YOW
1 stop9h 45mMultiple Airlines
lun. 17/114:35 p.m.YOW - ORD
2 stops21h 10mMultiple Airlines
Deal found 20/10C$ 467
jue. 13/116:40 a.m.ORD - YOW
1 stop9h 45mMultiple Airlines
mar. 18/119:25 a.m.YOW - ORD
1 stop10h 09mMultiple Airlines
Deal found 20/10C$ 469
jue. 20/116:20 a.m.MDW - YOW
1 stop10h 05mMultiple Airlines
dom. 23/115:40 a.m.YOW - MDW
1 stop10h 40mMultiple Airlines
Deal found 20/10C$ 514
vie. 7/113:32 p.m.MDW - YOW
1 stop7h 26mMultiple Airlines
lun. 10/114:15 p.m.YOW - MDW
2 stops20h 23mMultiple Airlines
Deal found 21/10C$ 557
jue. 13/1111:00 a.m.MDW - YOW
1 stop5h 29mMultiple Airlines
dom. 16/113:55 p.m.YOW - MDW
1 stop9h 00mMultiple Airlines
Deal found 20/10C$ 561
lun. 10/114:15 p.m.MDW - YOW
1 stop5h 14mMultiple Airlines
mar. 18/113:55 p.m.YOW - MDW
1 stop9h 00mMultiple Airlines
Deal found 20/10C$ 615
lun. 3/119:32 a.m.MDW - YOW
2 stops26h 03mMultiple Airlines
mar. 4/113:55 p.m.YOW - MDW
1 stop9h 00mMultiple Airlines
Deal found 20/10C$ 662

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 22 octubre 2025.

Round-trip from

C$ 397

One-way from

C$ 178

Popular in

November

Cheapest in

May

Average price

C$ 599
3/12-10/12
  • 3/12-10/12
  • 2 total stops
  • 54h 24m total
  • Chicago to Ottawa
Search Deals
27/10
  • 27/10
  • 1 total stop
  • 21h 50m total
  • Chicago to Ottawa
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 629,999 searches. Data last updated 22 octubre 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

mié. 3/12

3:43 p.m.-12:25 a.m.

1 stop31h 42m

Ottawa

mié. 10/12

4:15 p.m.-1:57 p.m.

1 stop22h 42m

C$ 403

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

jue. 29/1

6:05 a.m.-4:51 p.m.

2 stops9h 46m

Ottawa

mié. 11/2

4:15 p.m.-7:29 p.m.

1 stop28h 14m

C$ 436

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

lun. 3/11

5:15 a.m.-5:13 p.m.

1 stop10h 58m

Ottawa

mar. 4/11

4:15 p.m.-12:27 a.m.

1 stop9h 12m

C$ 444

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

sáb. 6/12

6:11 a.m.-12:25 a.m.

2 stops17h 14m

Ottawa

sáb. 13/12

7:00 a.m.-8:01 p.m.

1 stop14h 01m

C$ 448

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

vie. 16/1

7:00 a.m.-5:13 p.m.

1 stop9h 13m

Ottawa

lun. 19/1

4:20 p.m.-10:23 p.m.

2 stops31h 03m

C$ 467

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

mié. 3/12

6:48 a.m.-5:13 p.m.

1 stop9h 25m

Ottawa

vie. 12/12

4:15 p.m.-12:19 a.m.

1 stop9h 04m

C$ 487

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

sáb. 8/11

2:31 p.m.-9:54 p.m.

3 stops30h 23m

Ottawa

mar. 11/11

4:15 p.m.-9:47 a.m.

3 stops42h 32m

C$ 528

ChicagoOttawa

ORD - YOW

ORDYOW

Chicago O'Hare Intl

lun. 10/11

5:57 p.m.-5:25 p.m.

2 stops22h 28m

Ottawa

lun. 17/11

4:15 p.m.-9:47 a.m.

1 stop18h 32m

C$ 529

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

jue. 20/11

6:20 a.m.-8:54 p.m.

2 stops13h 34m

Ottawa

dom. 23/11

5:40 a.m.-3:20 p.m.

1 stop10h 40m

C$ 542

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

vie. 7/11

3:32 p.m.-11:58 p.m.

1 stop7h 26m

Ottawa

lun. 10/11

4:15 p.m.-11:38 a.m.

2 stops20h 23m

C$ 557

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/10

Showing 1-10 of 29 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 17 October 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 C$ 184). Flying from Chicago to Ottawa in December is currently the most expensive (average of C$ 369). 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 22 octubre 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to Ottawa as you normally would.

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 22 octubre 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
382 reviews
Check prices

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

8.0

Boarding

8.2

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
Check prices

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

8.0

Boarding

8.2

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
Check prices

Overall

8.0

Food

7.6

Entertainment

7.0

Comfort

8.0

Boarding

8.2

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?

    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 Avianca (90%), ANA (84%) or Air Canada (81%) 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, November is the cheapest month in which you can book a flight from Chicago to Ottawa (average of C$ 184). Flying from Chicago to Ottawa in December is currently the most expensive (average of C$ 369). 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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