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Cheap flights from Ottawa to Chicago O'Hare Intl Airport from C$ 216

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
25 Feb — 4 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ottawa to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ottawa to O'Hare Intl
Explore the most affordable flight options available from Ottawa to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 January 2026.

Tue 24/27:00 a.m.
YOW
-
ORD
1 stop13h 11m
Multiple Airlines
Wed 4/37:20 a.m.
ORD
-
YOW
1 stop30h 38m
Multiple Airlines
Deal found 25/1C$ 366
Mon 23/24:40 p.m.
YOW
-
ORD
2 stops9h 00m
Multiple Airlines
Wed 4/37:20 a.m.
ORD
-
YOW
1 stop30h 38m
Multiple Airlines
Deal found 25/1C$ 374
Sat 28/23:40 p.m.
YOW
-
ORD
2 stops10h 00m
Multiple Airlines
Wed 4/37:00 a.m.
ORD
-
YOW
1 stop16h 25m
Multiple Airlines
Deal found 25/1C$ 385
Fri 27/23:55 p.m.
YOW
-
ORD
1 stop9h 45m
Multiple Airlines
Wed 4/37:00 a.m.
ORD
-
YOW
1 stop16h 25m
Multiple Airlines
Deal found 25/1C$ 386
Mon 23/27:00 a.m.
YOW
-
ORD
1 stop29h 22m
Multiple Airlines
Mon 2/36:40 a.m.
ORD
-
YOW
2 stops10h 44m
Multiple Airlines
Deal found 25/1C$ 389
Wed 25/25:00 p.m.
YOW
-
ORD
2 stops8h 40m
Multiple Airlines
Wed 4/37:00 a.m.
ORD
-
YOW
1 stop16h 25m
Multiple Airlines
Deal found 25/1C$ 405
Tue 24/27:00 a.m.
YOW
-
ORD
1 stop13h 11m
Multiple Airlines
Mon 2/36:40 a.m.
ORD
-
YOW
1 stop9h 45m
Multiple Airlines
Deal found 25/1C$ 430
Thu 26/23:55 p.m.
YOW
-
ORD
1 stop9h 45m
Multiple Airlines
Sun 1/36:40 a.m.
ORD
-
YOW
1 stop9h 45m
Multiple Airlines
Deal found 25/1C$ 431
Fri 6/24:15 p.m.
YOW
-
ORD
1 stop28h 29m
Multiple Airlines
Tue 10/28:30 a.m.
ORD
-
YOW
1 stop7h 43m
Multiple Airlines
Deal found 24/1C$ 433

Find flight deals from Ottawa to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to O'Hare Intl (ORD). 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 26 January 2026.

Round-trip from

C$ 366

One-way from

C$ 216

Popular in

January

Cheapest in

September

Average price

C$ 1,104

Good round-trip deal

C$ 514 or less

Good one-way deal

C$ 283 or less
24/2-4/3
  • 24/2-4/3
  • 2 total stops
  • 43h 49m total
  • Ottawa to Chicago
Search Deals
9/3
  • 9/3
  • 1 total stop
  • 19h 21m total
  • Ottawa to Chicago
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 225 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Ottawa to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Ottawa to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to O'Hare Intl 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 26 January 2026.
Use the filters below to find and compare flights from Ottawa to Chicago O'Hare Intl Airport that are best for you.

Fly from

Ottawa

Fly to

O'Hare Intl

Route

Depart

Return

Price

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 23/2

7:00 a.m.-11:22 a.m.

1 stop29h 22m

Chicago O'Hare Intl

Mon 2/3

6:40 a.m.-6:24 p.m.

2 stops10h 44m

C$ 389

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 26/2

6:50 a.m.-6:29 p.m.

2 stops12h 39m

Chicago O'Hare Intl

Sun 1/3

6:51 p.m.-5:25 p.m.

1 stop21h 34m

C$ 457

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 21/5

5:55 a.m.-12:39 p.m.

2 stops7h 44m

Chicago O'Hare Intl

Mon 25/5

7:35 p.m.-5:35 p.m.

2 stops21h 00m

C$ 538

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 22/5

5:55 a.m.-6:41 p.m.

2 stops13h 46m

Chicago O'Hare Intl

Mon 25/5

7:35 p.m.-5:35 p.m.

2 stops21h 00m

C$ 540

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 24/3

6:45 a.m.-6:21 p.m.

2 stops12h 36m

Chicago O'Hare Intl

Sun 29/3

6:16 p.m.-3:04 p.m.

2 stops19h 48m

C$ 571

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 6/2

4:15 p.m.-4:58 p.m.

2 stops25h 43m

Chicago O'Hare Intl

Tue 10/2

8:37 p.m.-12:39 a.m.

3 stops27h 02m

C$ 609

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 4/5

2:20 p.m.-10:43 p.m.

1 stop9h 23m

Chicago O'Hare Intl

Thu 7/5

4:47 p.m.-12:30 p.m.

1 stop18h 43m

C$ 634

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 22/6

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

1 stop11h 43m

Chicago O'Hare Intl

Mon 29/6

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

1 stop30h 10m

C$ 649

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 9/3

4:15 p.m.-10:36 a.m.

1 stop19h 21m

C$ 216

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 6/5

5:55 a.m.-1:25 p.m.

1 stop8h 30m

C$ 230

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/1

Showing 1-10 of 15 results
1
2

Best time to book a flight from Ottawa to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport

What is the cheapest month to book a flight from Ottawa to Chicago O'Hare Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 222). Flying from Ottawa to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 386). 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 ORD?

Find hourly flight availability from Ottawa to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 January 2026.

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

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 26 January 2026.
Read through reviews of airlines operating flights from Ottawa to Chicago O'Hare Intl Airport, such as United Airlines and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,200 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,200 reviews
United Airlines
7.4
Good
9,200 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Air Canada
7.1
Good
10,656 reviews
United Airlines
7.4
Good
9,200 reviews
Check prices

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to O'Hare Intl. 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 O'Hare Intl?

    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 O'Hare Intl. 2 airlines have flights from Ottawa to Chicago O'Hare Intl on a regular basis. Booking flights from Ottawa to Chicago O'Hare Intl should not be difficult; the airport handles an average of 8 outbound flights to Chicago O'Hare Intl per day.

  • How long is the flight from Ottawa to Chicago O'Hare Intl Airport?

    Airlines like WestJet fly from Ottawa to Chicago O'Hare Intl Airport in about 7h 44m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 1051 km.

  • What are the cheapest airlines flying from Ottawa to Chicago O'Hare Intl Airport round-trip?

    Our cheapest airline available from Ottawa to Chicago O'Hare Intl Airport is United Airlines. Our recent data shows that you can find tickets from as low as C$ 460 on this airline. An additional option worth looking into is Air Canada, starting at C$ 499. United Airlines is 34% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Ottawa to Chicago O'Hare Intl Airport?

    Before booking your flight to Chicago O'Hare Intl Airport from Ottawa, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (100%), United Airlines (81%), ANA( 81%).

  • What are the cheapest flights from Ottawa to Chicago O'Hare Intl Airport?

    Looking for the cheapest flight from Ottawa to Chicago O'Hare Intl Airport? While on average our users pay C$ 617, our data indicates the cheapest price to be C$ 186. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around C$ 389.

  • Can I find deals for flights from Ottawa to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Ottawa to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to O'Hare Intl?

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

  • Can I find deals for business class flights from Ottawa to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Ottawa to O'Hare Intl 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 O'Hare Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 222). Flying from Ottawa to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 386). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Evanston
Des Plaines
Skokie
Downers Grove
Elk Grove Village
Racine
Naperville
Bolingbrook
Romeoville

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Ottawa to O'Hare Intl

Discover the top 2 airlines that operate flights from Ottawa to O'Hare Intl. 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 629,999 searches. Data last updated 26 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 460AverageC$ 651FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 499AverageC$ 671FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Ottawa to O'Hare Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ottawa to O'Hare Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to O'Hare Intl?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ottawa to O'Hare Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Ottawa to O'Hare Intl with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to O'Hare Intl become cheaper?

Not ready to book yet? You can track prices for flights from Ottawa to O'Hare Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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