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Cheap flights from Ottawa to Chicago O'Hare Intl Airport from C$ 283

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 16/7. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — ORD
17 Jun — 24 Jun1
1 adult

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 Tuesday or Friday and return on a Tuesday

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 12 June 2025.

Round-trip from

C$ 494

One-way from

C$ 283

Popular in

March

Cheapest in

June

Average price

C$ 596

Good round-trip deal

C$ 577 or less

Good one-way deal

C$ 366 or less
23/6-25/6
  • 23/6-25/6
  • 2 total stops
  • 26h 05m total
  • Ottawa to Chicago
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26/7
  • 26/7
  • 2 total stops
  • 13h 24m total
  • Ottawa to Chicago
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Highest demand for flights based on searches. 8% potential increase in price (C$ 92 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 28 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 12 June 2025.

Mon 23/63:50 p.m.YOW - ORD
1 stop18h 00mMultiple Airlines
Wed 25/65:51 a.m.ORD - YOW
1 stop8h 05mMultiple Airlines
Deal found 10/6C$ 494
Fri 4/75:25 p.m.YOW - ORD
Nonstop2h 28mUnited Airlines
Sun 6/76:15 p.m.ORD - YOW
Nonstop2h 20mUnited Airlines
Deal found 11/6C$ 514
Tue 1/76:00 a.m.YOW - ORD
1 stop4h 52mAir Canada
Sun 6/78:40 a.m.ORD - YOW
1 stop4h 04mAir Canada
Deal found 10/6C$ 528
Fri 29/86:00 a.m.YOW - ORD
1 stop11h 44mWestJet
Tue 2/95:30 p.m.ORD - YOW
2 stops21h 49mWestJet
Deal found 12/6C$ 647
Sat 16/85:55 a.m.YOW - ORD
2 stops8h 47mDelta
Mon 18/81:30 p.m.ORD - YOW
2 stops9h 52mDelta
Deal found 11/6C$ 786

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 12 June 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 23/6

3:50 p.m.-8:50 a.m.

1 stop18h 00m

Chicago O'Hare Intl

Wed 25/6

5:51 a.m.-2:56 p.m.

1 stop8h 05m

C$ 494

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 4/7

5:25 p.m.-6:53 p.m.

Nonstop2h 28m

Chicago O'Hare Intl

Sun 6/7

6:15 p.m.-9:35 p.m.

Nonstop2h 20m

C$ 514

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Tue 1/7

6:00 a.m.-9:52 a.m.

1 stop4h 52m

Chicago O'Hare Intl

Sun 6/7

8:40 a.m.-1:44 p.m.

1 stop4h 04m

C$ 528

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 29/8

6:00 a.m.-4:44 p.m.

1 stop11h 44m

Chicago O'Hare Intl

Tue 2/9

5:30 p.m.-4:19 p.m.

2 stops21h 49m

C$ 647

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 16/8

5:55 a.m.-1:42 p.m.

2 stops8h 47m

Chicago O'Hare Intl

Mon 18/8

1:30 p.m.-12:22 a.m.

2 stops9h 52m

C$ 786

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Wed 16/7

5:15 p.m.-4:44 p.m.

2 stops24h 29m

C$ 283

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Mon 21/7

5:25 p.m.-6:53 p.m.

Nonstop2h 28m

C$ 291

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 19/7

11:20 a.m.-11:44 p.m.

2 stops13h 24m

C$ 295

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 11/7

8:35 a.m.-1:13 p.m.

1 stop5h 38m

C$ 301

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

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 9 June 2025.

The best time to book flights from Ottawa to Chicago O'Hare Intl Airport is 23 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Ottawa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 352). 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 12 June 2025.

One of the essential ways to save on airfare from Ottawa to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 15% on airfare.

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 12 June 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 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 12 June 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and WestJet from Ottawa to Chicago to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
2,868 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
9,537 reviews
Delta
8.0
Very good
7,946 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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 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 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?

    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$ 514 on this airline. Additional options worth looking into are Air Canada and WestJet, starting at C$ 528 and C$ 647 round-trip. United Airlines is 28% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as C$ 290 on WestJet. Other airlines that offer cheap prices include United Airlines from C$ 291 and Air Canada from C$ 301 one-way.

  • 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: Avianca (89%), ANA (85%), GoJet( 82%).

  • 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$ 2,068, our data indicates the cheapest price to be C$ 249. The most popular route (Ottawa - Chicago O'Hare Intl), is priced around C$ 494.

  • 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, January is the cheapest month in which you can book a flight from Ottawa to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Ottawa to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 352). 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 Ottawa?

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Elk Grove Village
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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 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 532AverageC$ 694FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 543AverageC$ 666FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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

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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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