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Cheap flights from Ottawa to Chicago O'Hare Intl Airport from C$ 248

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
9 Apr — 16 Apr1
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 10 March 2026.

Tue 24/34:15 p.m.
YOW
-
ORD
1 stop19h 21m
Multiple Airlines
Tue 31/36:01 p.m.
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Deal found 5/3C$ 406
Mon 9/34:15 p.m.
YOW
-
ORD
1 stop19h 21m
Multiple Airlines
Wed 11/37:00 a.m.
ORD
-
YOW
1 stop16h 25m
Multiple Airlines
Deal found 5/3C$ 467
Tue 7/43:55 p.m.
YOW
-
ORD
1 stop9h 27m
Multiple Airlines
Thu 9/412:00 p.m.
ORD
-
YOW
1 stop11h 25m
Multiple Airlines
Deal found 8/3C$ 471
Tue 7/411:00 a.m.
YOW
-
ORD
2 stops14h 22m
Multiple Airlines
Tue 14/46:01 p.m.
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Deal found 9/3C$ 490
Sat 18/47:00 a.m.
YOW
-
ORD
1 stop15h 17m
Multiple Airlines
Wed 22/41:27 p.m.
ORD
-
YOW
1 stop26h 58m
Multiple Airlines
Deal found 7/3C$ 491
Mon 20/47:00 a.m.
YOW
-
ORD
1 stop27h 36m
Multiple Airlines
Fri 24/41:43 p.m.
ORD
-
YOW
1 stop9h 42m
Multiple Airlines
Deal found 7/3C$ 493
Mon 23/34:15 p.m.
YOW
-
ORD
1 stop19h 21m
Multiple Airlines
Thu 26/36:01 p.m.
ORD
-
YOW
1 stop22h 24m
Multiple Airlines
Deal found 6/3C$ 501
Fri 5/67:20 a.m.
YOW
-
ORD
1 stop10h 20m
Multiple Airlines
Sun 7/67:15 p.m.
ORD
-
YOW
1 stop19h 00m
Multiple Airlines
Deal found 5/3C$ 505

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 10 March 2026.

Round-trip from

C$ 406

One-way from

C$ 248

Popular in

January

Cheapest in

September

Average price

C$ 1,086

Good round-trip deal

C$ 556 or less

Good one-way deal

C$ 305 or less
24/3-31/3
  • 24/3-31/3
  • 2 total stops
  • 41h 45m total
  • Ottawa to Chicago
Search Deals
WestJet
  • WestJet
  • 30/4
  • 1 total stop
  • 10h 20m total
  • Ottawa to Chicago
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 316 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 46 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 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 10 March 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

Mon 13/7

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

Nonstop2h 20m

Chicago O'Hare Intl

Sat 18/7

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

Nonstop2h 18m

C$ 797

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 18/4

6:25 a.m.-7:58 a.m.

Nonstop2h 33m

Chicago O'Hare Intl

Wed 22/4

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

Nonstop2h 12m

C$ 798
Quickest round-trip

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sun 16/8

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

Nonstop2h 19m

Chicago O'Hare Intl

Fri 21/8

6:21 p.m.-9:35 p.m.

Nonstop2h 14m

C$ 798

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 8/5

5:25 p.m.-6:58 p.m.

Nonstop2h 33m

Chicago O'Hare Intl

Tue 12/5

6:21 p.m.-9:35 p.m.

Nonstop2h 14m

C$ 798

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 3/8

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

Nonstop2h 20m

Chicago O'Hare Intl

Tue 11/8

6:18 p.m.-11:54 p.m.

1 stop4h 36m

C$ 801

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 4/8

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

Nonstop2h 20m

Chicago O'Hare Intl

Sun 9/8

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

Nonstop2h 18m

C$ 801

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 5/6

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

Nonstop2h 27m

Chicago O'Hare Intl

Sun 7/6

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

Nonstop2h 18m

C$ 801

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 22/7

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

Nonstop2h 20m

Chicago O'Hare Intl

Sat 25/7

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

Nonstop2h 18m

C$ 801

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 8/8

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

Nonstop2h 20m

Chicago O'Hare Intl

Tue 11/8

8:40 a.m.-2:17 p.m.

1 stop4h 37m

C$ 801

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 8/4

6:00 a.m.-11:51 a.m.

2 stops6h 51m

Chicago O'Hare Intl

Sat 11/4

10:40 a.m.-4:38 p.m.

1 stop4h 58m

C$ 801

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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, February is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 178). Flying from Ottawa to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 381). 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 10 March 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 10 March 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
9,409 reviews
Check prices

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

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
9,409 reviews
United Airlines
7.4
Good
9,409 reviews
Check prices

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

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
10,800 reviews
United Airlines
7.4
Good
9,409 reviews
Check prices

Food

6.6

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

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 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 United Airlines fly from Ottawa to Chicago O'Hare Intl Airport in about 2h 20m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 1051 km. Most flights are nonstop.

  • 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$ 455 on this airline. An additional option worth looking into is Air Canada, starting at C$ 483. United Airlines is 37% 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: ANA (76%), Republic Airways (76%), Air Canada( 73%).

  • 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$ 1,200, our data indicates the cheapest price to be C$ 243. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around C$ 506.

  • 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, February is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 178). Flying from Ottawa to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 381). 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
Schaumburg

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 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 455AverageC$ 607FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 483AverageC$ 624FlexibilityNo 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?

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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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