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Cheap flights from Ottawa to Chicago O'Hare Intl Airport from C$ 307

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
11 Jul — 18 Jul1
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 11 June 2026.

Wed 21/108:40 a.m.
YOW
-
ORD
1 stop6h 25m
American Airlines
Wed 28/109:40 a.m.
ORD
-
YOW
1 stop6h 09m
American Airlines
Deal found 8/6C$ 578
Wed 23/96:55 a.m.
YOW
-
ORD
1 stop8h 40m
Multiple Airlines
Sat 26/97:00 a.m.
ORD
-
YOW
1 stop4h 54m
Multiple Airlines
Deal found 7/6C$ 584
Tue 20/108:40 a.m.
YOW
-
ORD
1 stop6h 25m
American Airlines
Tue 27/1011:40 a.m.
ORD
-
YOW
1 stop5h 44m
American Airlines
Deal found 9/6C$ 585
Fri 18/96:55 a.m.
YOW
-
ORD
1 stop8h 40m
Multiple Airlines
Mon 21/93:20 p.m.
ORD
-
YOW
1 stop25h 34m
Multiple Airlines
Deal found 6/6C$ 598
Sat 19/98:40 a.m.
YOW
-
ORD
1 stop6h 40m
American Airlines
Sun 20/98:03 a.m.
ORD
-
YOW
1 stop5h 52m
American Airlines
Deal found 8/6C$ 605
Tue 20/108:40 a.m.
YOW
-
ORD
1 stop6h 25m
American Airlines
Mon 26/109:40 a.m.
ORD
-
YOW
1 stop6h 09m
American Airlines
Deal found 9/6C$ 606
Fri 24/77:00 a.m.
YOW
-
ORD
1 stop6h 44m
American Airlines
Sun 26/72:38 p.m.
ORD
-
YOW
1 stop5h 42m
American Airlines
Deal found 10/6C$ 627
Fri 10/78:00 a.m.
YOW
-
ORD
1 stop6h 19m
Multiple Airlines
Sun 12/77:25 a.m.
ORD
-
YOW
1 stop11h 39m
Multiple Airlines
Deal found 10/6C$ 636
Thu 22/107:00 a.m.
YOW
-
ORD
1 stop6h 25m
American Airlines
Sun 25/1011:40 a.m.
ORD
-
YOW
1 stop5h 44m
American Airlines
Deal found 6/6C$ 648
Wed 22/77:00 a.m.
YOW
-
ORD
1 stop8h 22m
American Airlines
Wed 29/78:37 p.m.
ORD
-
YOW
1 stop17h 18m
American Airlines
Deal found 7/6C$ 649
Mon 19/107:00 a.m.
YOW
-
ORD
1 stop9h 26m
Multiple Airlines
Wed 21/103:20 p.m.
ORD
-
YOW
1 stop3h 44m
Multiple Airlines
Deal found 8/6C$ 652
Thu 22/107:00 a.m.
YOW
-
ORD
1 stop6h 25m
American Airlines
Sat 24/108:00 a.m.
ORD
-
YOW
1 stop11h 00m
American Airlines
Deal found 6/6C$ 656

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 11 June 2026.

Round-trip from

C$ 578

One-way from

C$ 307

Popular in

March

Cheapest in

September

Average price

C$ 839

Good round-trip deal

C$ 593 or less

Good one-way deal

C$ 407 or less
American Airlines
  • American Airlines
  • 21/10-28/10
  • 2 total stops
  • 12h 34m total
  • Ottawa to Chicago
Search Deals
10/8
  • 10/8
  • 1 total stop
  • 30h 15m total
  • Ottawa to Chicago
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 366 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 11 June 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 22/10

7:00 a.m.-12:25 p.m.

1 stop6h 25m

Chicago O'Hare Intl

Wed 28/10

9:40 a.m.-4:49 p.m.

1 stop6h 09m

C$ 606

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 13/11

7:25 p.m.-8:30 a.m.

2 stops14h 05m

Chicago O'Hare Intl

Mon 16/11

9:30 p.m.-1:26 p.m.

1 stop14h 56m

C$ 723

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 25/8

3:10 p.m.-11:22 p.m.

1 stop9h 12m

Chicago O'Hare Intl

Wed 26/8

7:05 a.m.-4:38 p.m.

1 stop8h 33m

C$ 856

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 20/10

3:10 p.m.-11:21 p.m.

1 stop9h 11m

Chicago O'Hare Intl

Tue 27/10

2:00 p.m.-5:14 p.m.

Nonstop2h 14m

C$ 907

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 21/10

10:37 a.m.-12:00 p.m.

Nonstop2h 23m

Chicago O'Hare Intl

Sat 24/10

8:50 a.m.-2:17 p.m.

1 stop4h 27m

C$ 934

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 13/11

6:20 a.m.-7:55 a.m.

Nonstop2h 35m

Chicago O'Hare Intl

Fri 13/11

11:45 a.m.-9:56 p.m.

1 stop9h 11m

C$ 934

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 21/10

6:25 a.m.-7:44 a.m.

Nonstop2h 19m

Chicago O'Hare Intl

Mon 26/10

2:00 p.m.-5:14 p.m.

Nonstop2h 14m

C$ 934
Quickest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 14/7

6:25 a.m.-7:45 a.m.

Nonstop2h 20m

Chicago O'Hare Intl

Tue 14/7

1:55 p.m.-5:07 p.m.

Nonstop2h 12m

C$ 934

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 20/10

5:20 p.m.-6:46 p.m.

Nonstop2h 26m

Chicago O'Hare Intl

Wed 28/10

7:25 a.m.-10:39 a.m.

Nonstop2h 14m

C$ 934

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 9/7

5:20 p.m.-6:47 p.m.

Nonstop2h 27m

Chicago O'Hare Intl

Sun 12/7

10:41 a.m.-1:59 p.m.

Nonstop2h 18m

C$ 934

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 20 resultsSorted by cheapest first
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, September is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 477). Flying from Ottawa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 1,233). 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 11 June 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.

How much does it cost to fly round-trip from Ottawa to Chicago O'Hare Intl Airport?

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 11 June 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
9,804 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

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
9,804 reviews
United Airlines
7.4
Good
9,804 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

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
11,161 reviews
United Airlines
7.4
Good
9,804 reviews
Check prices

Food

6.6

Boarding

7.7

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

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 11 outbound flights to Chicago O'Hare Intl per day.

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

    Airlines like American Airlines and United Airlines fly from Ottawa to Chicago O'Hare Intl Airport in about 6h 25m. The time it takes to get you to your destination can typically vary by up to 7h 40m. Airlines will cover a distance of 1051 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 flying from Ottawa to Chicago O'Hare Intl Airport round-trip?

    Our cheapest airline available from Ottawa to Chicago O'Hare Intl Airport is Air Canada. Our recent data shows that you can find tickets from as low as C$ 418 on this airline. An additional option worth looking into is United Airlines, starting at C$ 468. Air Canada is 49% 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: Republic Airways (86%), ANA (85%), Air Canada( 80%).

  • 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$ 901, our data indicates the cheapest price to be C$ 283. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around C$ 584.

  • 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, September is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 477). Flying from Ottawa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 1,233). 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
Northbrook
Evanston
Des Plaines
Skokie
Downers Grove
Elk Grove Village
Racine
Bolingbrook
Naperville
Romeoville
Schaumburg

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 11 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 418AverageC$ 803FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 468AverageC$ 628FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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