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Cheap flights from Ottawa to Chicago from C$ 312

YOW — CHI
18 Nov — 25 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to Chicago

Wed 11/114:46 p.m. -
Nonstop2h 44m
Thu 12/115:55 a.m. -
1 stop6h 16m
Deal found 16/10C$ 465
Wed 11/118:25 a.m. -
1 stop4h 10m
Thu 12/1112:15 p.m. -
1 stop4h 57m
Deal found 16/10C$ 537
Fri 6/1112:15 p.m. -
1 stop6h 25m
Sun 8/1112:15 p.m. -
1 stop4h 57m
Deal found 16/10C$ 539
Wed 4/118:25 a.m. -
1 stop4h 10m
Mon 9/1112:15 p.m. -
1 stop4h 57m
Deal found 14/10C$ 547
Sun 15/1112:15 p.m. -
1 stop6h 25m
Mon 16/1112:15 p.m. -
1 stop4h 57m
Deal found 18/10C$ 549
Sat 21/1112:40 p.m. -
1 stop6h 00m
Mon 23/1112:15 p.m. -
1 stop4h 57m
Deal found 18/10C$ 551
Thu 19/118:25 a.m. -
1 stop4h 10m
Sun 22/1112:15 p.m. -
1 stop4h 57m
Deal found 19/10C$ 566
Fri 20/118:25 a.m. -
1 stop4h 10m
Sun 22/1112:15 p.m. -
1 stop4h 57m
Deal found 15/10C$ 570
Fri 13/118:25 a.m. -
1 stop4h 10m
Fri 20/1112:15 p.m. -
1 stop4h 57m
Deal found 16/10C$ 571
Sun 15/118:25 a.m. -
1 stop4h 10m
Wed 18/1112:15 p.m. -
1 stop4h 57m
Deal found 14/10C$ 573
Sun 15/1112:15 p.m. -
1 stop6h 25m
Sun 22/1112:15 p.m. -
1 stop4h 57m
Deal found 18/10C$ 574
Sat 14/115:30 a.m. -
3 stops19h 17m
Tue 17/116:08 a.m. -
3 stops14h 54m
Deal found 16/10C$ 853

Find flight deals from Ottawa to Chicago

Round-trip from

C$ 465

One-way from

C$ 312

Popular in

January

Cheapest in

February

Average price

C$ 1,142

Good round-trip deal

C$ 834 or less

Good one-way deal

C$ 483 or less
Air Canada
  • Air Canada
  • 11/11-12/11
  • 1 total stop
  • 9h 00m total
  • Ottawa to Chicago
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8/12-31/12
  • 8/12-31/12
  • 3 total stops
  • 34h 33m total
  • Ottawa to Chicago
Search Deals
High demand for flights, 8% potential price rise
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Cheapest flight prices on average. 4% potential price decrease (C$ 52 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Ottawa to Chicago (CHI).
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Price to beat on a one-way flight from Ottawa to Chicago (CHI).
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ottawa to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Tue 1/12

8:25 a.m.-11:35 a.m.

1 stop4h 10m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 314

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Tue 8/12

4:40 p.m.-2:30 p.m.

2 stops22h 50m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 314

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Sat 16/1

1:50 p.m.-7:44 p.m.

1 stop6h 54m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 320

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Mon 30/11

8:25 a.m.-11:35 a.m.

1 stop4h 10m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 361

OttawaChicago

YOW Ottawa - MDW Chicago Midway

YOWMDW

Ottawa

Tue 10/11

7:05 a.m.-11:47 p.m.

2 stops17h 42m

Chicago Midway

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 375

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Mon 30/11

10:30 a.m.-1:51 p.m.

2 stops28h 21m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 381

OttawaChicago

YOW Ottawa - MDW Chicago Midway

YOWMDW

Ottawa

Fri 4/12

3:15 p.m.-11:33 a.m.

2 stops21h 18m

Chicago Midway

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 393

OttawaChicago

YOW Ottawa - ORD Chicago O'Hare Intl

YOWORD

Ottawa

Thu 29/10

7:05 a.m.-3:37 p.m.

1 stop9h 32m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 417

OttawaChicago

YOW Ottawa - MDW Chicago Midway

YOWMDW

Ottawa

Fri 20/11

5:30 a.m.-1:45 p.m.

3 stops33h 15m

Chicago Midway

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 419

OttawaChicago

YOW Ottawa - MDW Chicago Midway

YOWMDW

Ottawa

Sun 10/1

3:25 p.m.-4:26 p.m.

2 stops26h 01m

Chicago Midway

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 425

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/10

Showing 1-10 of 43 resultsSorted by cheapest first
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Best time to book a flight from Ottawa to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Ottawa with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

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

Currently, March is the cheapest month in which you can book a flight from Ottawa to Chicago (average of C$ 573). Flying from Ottawa to Chicago in January is currently the most expensive (average of C$ 1,137). 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 YOW to CHI?

When flying from Ottawa to Chicago, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Ottawa to Chicago

The most flights from YOW to CHI are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

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

Airfare is below average for this route at the moment.
Ottawa to Chicago flights typically cost between C$ 764 and C$ 1,173 in November.
The cheapest round-trip price found within the last 5 days was C$ 465 on Air Canada (11 Nov-12 Nov).

What’s the top layover airport for flights from Ottawa to Chicago?

Toronto (YTZ) – chosen by Cheapflights users on 77% of one-stop itineraries from Ottawa to Chicago on Cheapflights.

What’s the cheapest layover airport for flights from Ottawa to Chicago?

Toronto (YTZ) is the most affordable 1-stop option, with an average round-trip price of C$ 462.

What’s the fastest layover option from Ottawa to Chicago?

Flights via Toronto (YTZ) have the shortest average one-way travel time for 1-stop routes: 4h 00m.

Which airport typically offers the quickest layover for flights from Ottawa to Chicago?

Flights via Toronto (YTZ) offer the fastest connection on this route, with an average layover time of 1h 18m.

Reviews of airlines servicing Chicago

Get a feel of what it's like to fly with Porter Airlines,United Airlines, andAir Canada from Ottawa to Chicago 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
467 reviews
Check prices

Boarding

8.2

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Porter Airlines
8.0
Very good
467 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
United Airlines
7.3
Good
10,387 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Air Canada
7.1
Good
11,784 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
American Airlines
7.0
Good
12,181 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Boarding

8.2

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Related info for your journey

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

    Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly out of when you book flights from Ottawa to Chicago. 1 airline have flights from Ottawa to Chicago on a regular basis. Booking flights from Ottawa to Chicago should not be difficult; the airport handles an average of 12 outbound flights to Chicago per day.

  • How long is the flight from Ottawa to Chicago?

    Departing from Ottawa to Chicago will take you 4h 10m. There are 1051 km between Ottawa and Chicago.

  • What is the cheapest airline to fly from Ottawa to Chicago round-trip?

    Currently priced at C$ 832, Air Canada will fly you from Ottawa to Chicago and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip.

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

    The top 3 most reliable airlines when flying from Ottawa to Chicago are ANA (85%), United Airlines (84%) and Air Canada (82%).

  • What are the cheapest flights from Ottawa to Chicago?

    Looking at all options, your cheapest flight can be booked for C$ 334. While the most popular route (Ottawa - Chicago O'Hare Intl) can be booked for C$ 537 on average, our data indicates C$ 1,749 when flying from Ottawa to Chicago.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ottawa to Chicago 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 Ottawa to Chicago?

    Currently, March is the cheapest month in which you can book a flight from Ottawa to Chicago (average of C$ 573). Flying from Ottawa to Chicago in January is currently the most expensive (average of C$ 1,137). 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

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Ottawa to Chicago

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 743AverageC$ 897FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 832AverageC$ 1,055FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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When you search for this flight from Ottawa to Chicago, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to Chicago?

Cheapflights helps you find that perfect flight to Chicago from Ottawa by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ottawa to Chicago with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ottawa to Chicago flexibly with Cheapflights today.

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Yes, Cheapflights offers price alerts on Ottawa to Chicago flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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