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O'Hare Intl

$191+ Cheap flights from Ottawa (YOW) to O'Hare Intl (ORD)

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheapflights Tip: The best prices from Ottawa to Chicago O'Hare Intl are usually found in December or April, booked 83 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$363
(Mytrip)

One-way from

$191
(Kiwi.com)

Popular in

March

Cheapest in

December

Average price

$643

Good round-trip deal

$298 or less

Good one-way deal

$169 or less
Provider with most accurate pricing for Ottawa-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for Ottawa-Chicago O'Hare Intl flights.
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From Ottawa to Chicago O'Hare Intl
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One-way flight from Ottawa to Chicago O'Hare Intl
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Ottawa to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Ottawa to Chicago O'Hare Intl.
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Find flight deals from Ottawa to O'Hare Intl

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 March 25, 2025.

This Mytrip deal was found by Cheapflights users on 3/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/54:10 pmYOW - ORD
1 stop15h 53mMultiple Airlines
Sat 5/109:08 pmORD - YOW
1 stop17h 48mMultiple Airlines
Deal found 3/24$363
This Air Canada deal was found by Cheapflights users on 3/23. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1411:05 amYOW - ORD
1 stop4h 50mAir Canada
Mon 5/268:40 amORD - YOW
1 stop4h 05mAir Canada
Deal found 3/23$402
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/15:25 pmYOW - ORD
Nonstop2h 29mUnited Airlines
Sun 5/47:00 amORD - YOW
1 stop6h 27mUnited Airlines
Deal found 3/24$441
This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/45:55 amYOW - ORD
2 stops11h 15mWestJet
Sat 5/105:30 pmORD - YOW
1 stop30h 11mWestJet
Deal found 3/24$488
This Delta deal was found by Cheapflights users on 3/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/145:55 amYOW - ORD
2 stops11h 35mDelta
Mon 5/269:00 amORD - YOW
2 stops14h 22mDelta
Deal found 3/23$717

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 2,558,603 searches. Data last updated March 25, 2025.
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 5/5

4:10 pm-7:03 am

1 stop15h 53m

Chicago O'Hare Intl

Sat 5/10

9:08 pm-3:56 pm

1 stop17h 48m

$363

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 5/14

11:05 am-2:55 pm

1 stop4h 50m

Chicago O'Hare Intl

Mon 5/26

8:40 am-1:45 pm

1 stop4h 05m

$402

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 5/1

5:25 pm-6:54 pm

Nonstop2h 29m

Chicago O'Hare Intl

Sun 5/4

7:00 am-2:27 pm

1 stop6h 27m

$441

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sun 5/4

5:55 am-4:10 pm

2 stops11h 15m

Chicago O'Hare Intl

Sat 5/10

5:30 pm-12:41 am

1 stop30h 11m

$488

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 5/14

5:55 am-4:30 pm

2 stops11h 35m

Chicago O'Hare Intl

Mon 5/26

9:00 am-12:22 am

2 stops14h 22m

$717

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 5/12

4:10 pm-8:07 pm

1 stop28h 57m

$191

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 5/6

6:33 am-8:02 am

Nonstop2h 29m

$240

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 5/6

6:30 am-4:44 pm

2 stops11h 14m

$257

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 7/21

5:55 am-4:34 pm

2 stops11h 39m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Ottawa to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to O'Hare Intl in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ottawa-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ottawa-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ottawa-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ottawa-Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 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

How far ahead should I book a flight from Ottawa to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to O'Hare Intl. Price data was last updated on March 21, 2025.

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to Chicago O'Hare Intl Airport. 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 O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of $245). Flying from Ottawa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $323). 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 March 25, 2025.

When flying from Ottawa to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 11% versus a flight in the morning.

Weekly flight availability from Ottawa to Chicago O'Hare Intl Airport

Explore weekly flight availability from Ottawa to O'Hare Intl. 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 25, 2025.

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

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 March 25, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and WestJet from Ottawa to Chicago by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,785 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
8,952 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 6.6 mi from the city center, 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 12 outbound flights to Chicago O'Hare Intl per day.

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

    According to our current data, Air Canada ($402), United Airlines ($448), and WestJet ($456) offers the cheapest pricing from Ottawa to Chicago O'Hare Intl Airport. These flights start at 28% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ottawa to Chicago O'Hare Intl Airport one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $240. United Airlines flights start at $257 while deals on WestJet start at $466 one-way.

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

    The top 3 most reliable airlines when flying from Ottawa to Chicago O'Hare Intl Airport are ANA (81%), GoJet (80%) and Avianca (80%).

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

    On average you can expect to pay $446 for a flight from Ottawa to Chicago O'Hare Intl Airport. The cheapest flight overall is $141 while the most popular route, (Ottawa - Chicago O'Hare Intl) is currently priced at $310.

  • 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, August is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of $245). Flying from Ottawa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $323). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
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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 2,558,603 searches. Data last updated March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$406Average$606FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$423Average$551FlexibilityNo cancel feeOn-time67%
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