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O'Hare Intl

$207+ 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 7/16. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
Jun 19 — Jun 261
Thu 6/19
Thu 6/26
1 adult, Economy
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Cheapflights Tip: The best prices from Ottawa to Chicago O'Hare Intl are usually found in June or May, booked 23 days in advance, depart on a Saturday or Friday and return on a Thursday

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 June 14, 2025.

Round-trip from

$326
(FlightHub)

One-way from

$207
(Mytrip)

Popular in

March

Cheapest in

June

Average price

$436

Good round-trip deal

$351 or less

Good one-way deal

$232 or less
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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Highest demand for flights based on searches. 8% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 14, 2025.

This FlightHub deal was found by Cheapflights users on 6/13. 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.
Mon 8/186:00 amYOW - ORD
1 stop11h 44mWestJet
Mon 8/255:30 pmORD - YOW
1 stop20h 16mWestJet
Deal found 6/13$326
This Mytrip deal was found by Cheapflights users on 6/13. 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.
Wed 7/165:55 amYOW - ORD
1 stop10h 09mMultiple Airlines
Sun 7/276:20 pmORD - YOW
1 stop5h 01mMultiple Airlines
Deal found 6/13$365
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 7/45:25 pmYOW - ORD
Nonstop2h 28mUnited Airlines
Sun 7/66:15 pmORD - YOW
Nonstop2h 20mUnited Airlines
Deal found 6/11$376
This Air Canada deal was found by Cheapflights users on 6/12. 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 7/1611:05 amYOW - ORD
1 stop4h 50mAir Canada
Sun 7/276:20 pmORD - YOW
1 stop5h 00mAir Canada
Deal found 6/12$392
This Delta deal was found by Cheapflights users on 6/14. 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.
Fri 8/295:55 amYOW - ORD
2 stops7h 50mDelta
Tue 9/29:10 amORD - YOW
2 stops14h 12mDelta
Deal found 6/14$595

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 June 14, 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 8/18

6:00 am-4:44 pm

1 stop11h 44m

Chicago O'Hare Intl

Mon 8/25

5:30 pm-2:46 pm

1 stop20h 16m

$326

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 7/16

5:55 am-3:04 pm

1 stop10h 09m

Chicago O'Hare Intl

Sun 7/27

6:20 pm-12:21 am

1 stop5h 01m

$365

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 7/4

5:25 pm-6:53 pm

Nonstop2h 28m

Chicago O'Hare Intl

Sun 7/6

6:15 pm-9:35 pm

Nonstop2h 20m

$376

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 7/16

11:05 am-2:55 pm

1 stop4h 50m

Chicago O'Hare Intl

Sun 7/27

6:20 pm-12:20 am

1 stop5h 00m

$392

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 8/29

5:55 am-12:45 pm

2 stops7h 50m

Chicago O'Hare Intl

Tue 9/2

9:10 am-12:22 am

2 stops14h 12m

$595

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 7/16

5:15 pm-4:44 pm

2 stops24h 29m

$207

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 7/10

4:25 pm-5:58 pm

1 stop26h 33m

$212

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 7/10

6:33 am-7:55 am

Nonstop2h 22m

$221

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 7/5

10:00 am-3:04 pm

1 stop6h 04m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 June 9, 2025.

Booking 23 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 $321). 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 June 14, 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 14% 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 June 14, 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 June 14, 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
7,958 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,958 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,793 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,872 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,542 reviews
Delta
8.0
Very good
7,958 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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, WestJet ($326), United Airlines ($376), and Air Canada ($392) offers the cheapest pricing from Ottawa to Chicago O'Hare Intl Airport. These flights start at 37% 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 WestJet, which is currently one of the cheapest options available, starting at $207. United Airlines flights start at $221 while deals on Air Canada start at $224 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 Avianca (89%), ANA (85%) and GoJet (82%).

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

    On average you can expect to pay $499 for a flight from Ottawa to Chicago O'Hare Intl Airport. The cheapest flight overall is $155 while the most popular route, (Ottawa - Chicago O'Hare Intl) is currently priced at $382.

  • 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 $321). 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

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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 June 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$410Average$606FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$423Average$550FlexibilityNo cancel feeOn-time67%

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