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$183+ Cheap flights from Ottawa (YOW) to Chicago (CHI)

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — CHI
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheapflights Tip: The best prices from Ottawa to Chicago are usually found in February or May, booked 29 days in advance, depart on a Saturday or Thursday and return on a Thursday

Cheap flight deals from Ottawa to Chicago

Cheapest flights from Ottawa to Chicago
Explore the most affordable flight options available from Ottawa to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Sun 4/1912:10 pm
YOW
-
MDW
1 stop4h 10m
Porter Airlines
Thu 4/2311:00 am
MDW
-
YOW
1 stop6h 24m
Porter Airlines
Deal found 3/5$237
This Trip.com deal was found by Cheapflights users on 3/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:40 am
YOW
-
MDW
1 stop4h 30m
Porter Airlines
Sun 4/511:00 am
MDW
-
YOW
1 stop5h 29m
Porter Airlines
Deal found 3/5$271
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Tue 3/244:15 pm
YOW
-
ORD
1 stop19h 21m
Multiple Airlines
Tue 3/316:01 pm
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Deal found 3/5$299
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 6/56:25 pm
YOW
-
MDW
1 stop16h 15m
Multiple Airlines
Sun 6/710:25 am
MDW
-
YOW
1 stop12h 55m
Multiple Airlines
Deal found 3/5$303
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Tue 3/249:30 am
YOW
-
MDW
1 stop9h 43m
Multiple Airlines
Tue 3/319:30 am
MDW
-
YOW
1 stop6h 55m
Multiple Airlines
Deal found 3/5$309
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Sun 4/1912:10 pm
YOW
-
MDW
1 stop4h 10m
Multiple Airlines
Thu 4/237:30 am
MDW
-
YOW
2 stops8h 34m
Multiple Airlines
Deal found 3/5$316
This Trip.com deal was found by Cheapflights users on 3/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/236:45 am
YOW
-
MDW
1 stop4h 20m
Porter Airlines
Fri 3/2711:00 am
MDW
-
YOW
1 stop6h 24m
Porter Airlines
Deal found 3/5$326
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 3/94:15 pm
YOW
-
ORD
1 stop19h 21m
Multiple Airlines
Wed 3/117:00 am
ORD
-
YOW
1 stop16h 25m
Multiple Airlines
Deal found 3/5$344
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Tue 4/73:55 pm
YOW
-
ORD
1 stop9h 27m
Multiple Airlines
Thu 4/912:00 pm
ORD
-
YOW
1 stop11h 25m
Multiple Airlines
Deal found 3/8$347
This Trip.com deal was found by Cheapflights users on 3/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:40 am
YOW
-
MDW
1 stop4h 30m
Porter Airlines
Mon 4/611:00 am
MDW
-
YOW
1 stop6h 24m
Porter Airlines
Deal found 3/5$355
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Tue 4/711:00 am
YOW
-
ORD
2 stops14h 22m
Multiple Airlines
Tue 4/146:01 pm
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Deal found 3/9$361
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 4/187:00 am
YOW
-
ORD
1 stop15h 17m
Multiple Airlines
Wed 4/221:27 pm
ORD
-
YOW
1 stop26h 58m
Multiple Airlines
Deal found 3/7$362

Find flight deals from Ottawa to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Chicago (CHI). 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Kiwi.com)

One-way from

$183
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$429

Good round-trip deal

$389 or less

Good one-way deal

$225 or less
Provider with most accurate pricing for Ottawa-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ottawa-Chicago (CHI) flights.
Search Deals
From Ottawa to Chicago (CHI)
Search Deals
One-way flight from Ottawa to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Ottawa to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Ottawa to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Chicago 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 March 10, 2026.
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 - ORD

YOWORD

Ottawa

Sun 4/19

4:15 pm-9:36 am

1 stop18h 21m

Chicago O'Hare Intl

Thu 4/23

12:47 pm-12:59 pm

2 stops23h 12m

$399

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Mon 4/6

5:40 am-3:20 pm

1 stop10h 40m

Chicago Midway

Mon 4/13

11:00 am-12:39 am

1 stop12h 39m

$402

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Fri 6/5

2:20 pm-7:00 am

2 stops17h 40m

Chicago Midway

Sun 6/7

10:25 am-8:04 pm

1 stop8h 39m

$437

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Thu 4/16

6:50 am-10:15 am

1 stop4h 25m

Chicago Midway

Thu 4/23

11:00 am-5:04 pm

1 stop5h 04m

$438

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Sat 4/4

8:40 am-12:10 pm

1 stop4h 30m

Chicago Midway

Mon 4/6

4:05 pm-9:54 pm

1 stop4h 49m

$466

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Fri 4/3

4:45 pm-12:10 pm

1 stop20h 25m

Chicago Midway

Mon 4/6

4:05 pm-12:39 am

1 stop7h 34m

$466

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Fri 4/3

6:55 pm-12:10 pm

1 stop18h 15m

Chicago Midway

Mon 4/6

11:00 am-6:24 pm

1 stop6h 24m

$498

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Mon 8/3

11:00 am-2:35 pm

1 stop4h 35m

Chicago Midway

Fri 8/7

3:20 pm-8:04 pm

1 stop3h 44m

$513

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Tue 8/4

11:00 am-2:35 pm

1 stop4h 35m

Chicago Midway

Tue 8/11

10:25 am-5:54 pm

1 stop6h 29m

$513

OttawaChicago

YOW - MDW

YOWMDW

Ottawa

Fri 7/24

11:00 am-2:35 pm

1 stop4h 35m

Chicago Midway

Mon 7/27

3:20 pm-8:04 pm

1 stop3h 44m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 39 resultsSorted by cheapest first
1
2
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  • Most accurate provider: When it comes to deals on Ottawa-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ottawa-Chicago 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 Ottawa-Chicago 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 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
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 Ottawa to Chicago

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

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Chicago. Price data was last updated on March 6, 2026.

Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Ottawa to Chicago (average of $131). Flying from Ottawa to Chicago in March is currently the most expensive (average of $231). 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?

Find hourly flight availability from Ottawa to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.

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

Explore weekly flight availability from Ottawa to Chicago. 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 March 10, 2026.

The most flights from YOW to CHI are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated March 10, 2026.
Peruse reviews from past customers who have flown with Porter Airlines and United Airlines from Ottawa to Chicago 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
423 reviews

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
423 reviews
Porter Airlines
8.0
Very good
423 reviews

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
United Airlines
7.4
Good
9,409 reviews
Porter Airlines
8.0
Very good
423 reviews

Food

7.6

Comfort

8.0

Crew

8.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Chicago. 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 from for flights from Ottawa to Chicago?

    Located just 6.6 mi from the city center, Ottawa is the airport most travelers will use when flying to Chicago from Ottawa. Booking flights from Ottawa (YOW) to Chicago should be relatively easy as there are 11 daily outbound flights to Chicago from 1 airline.

  • How long is the flight from Ottawa to Chicago?

    Porter Airlines and United Airlines can get you from Ottawa to Chicago in just under 2h 20m. Your travel time can differ by up to 2h 05m. The distance from Ottawa to Chicago is about 653 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Ottawa to Chicago is United Airlines. Our recent data shows that you can find tickets from as low as $324 on this airline. United Airlines is currently priced 24% below the average price you’ll pay for this route.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to Chicago on time: ANA (76%), Republic Airways (76%), Air Canada (73%).

  • What are the cheapest flights from Ottawa to Chicago?

    Looking for the cheapest flight from Ottawa to Chicago? While on average our users pay $735, our data indicates the cheapest price to be $158. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around $373.

  • 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, February is the cheapest month in which you can book a flight from Ottawa to Chicago (average of $131). Flying from Ottawa to Chicago in March is currently the most expensive (average of $231). 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 Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Merrillville
Hammond
Porter
Benton Harbor

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Ottawa to Chicago

Discover the top airline that operate flights from Ottawa to Chicago. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$324Average$580FlexibilityNo cancel feeOn-time69%

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