YOW - ORD

C$ 296 Find Cheap Flights from Ottawa to Chicago O'Hare Airport – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to O'Hare Intl departing on 31/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 507
Typical prices: C$ 481-C$ 581
Multiple Airlines
Fri 11/9Fri 18/9
YOW - ORD • 1 stop
Cheapest direct flights
C$ 910
Typical prices: C$ 481-C$ 560
Air Canada
Tue 8/9Sat 12/9
YOW - ORD • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Priority Boarding helps secure carry-on space on Ottawa to O'Hare flights.
Air Canada Wi-Fi includes free messaging for Aeroplan members; United offers it too.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
WestJet
Cheapest • from C$ 564 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Every day
You can fly direct with United Airlines. Average duration is 2h 23m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to travel
October
Cheapest • 45% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to O'Hare Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Ottawa to O'Hare Intl (YOW-ORD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to O'Hare Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ottawa to O'Hare Intl

Fri, 11 Sep - Fri, 18 Sep
Multiple Airlines Logo
6:55 a.m. - 7:48 p.m.
YOW
-
ORD
13h 53m
1 stop
Multiple Airlines Logo
5:35 p.m. - 9:15 a.m.
ORD
-
YOW
14h 40m
1 stop
C$ 507Multiple Airlines
Wed, 9 Sep - Wed, 16 Sep
Multiple Airlines Logo
6:55 a.m. - 8:12 p.m.
YOW
-
ORD
14h 17m
2 stops
Multiple Airlines Logo
2:15 p.m. - 12:20 a.m.
ORD
-
YOW
9h 05m
1 stop
C$ 512Multiple Airlines
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
6:55 a.m. - 7:48 p.m.
YOW
-
ORD
13h 53m
1 stop
Multiple Airlines Logo
2:15 p.m. - 12:20 a.m.
ORD
-
YOW
9h 05m
1 stop
C$ 512Multiple Airlines
Wed, 9 Sep - Wed, 16 Sep
Multiple Airlines Logo
6:55 a.m. - 2:52 p.m.
YOW
-
ORD
8h 57m
2 stops
Multiple Airlines Logo
9:55 a.m. - 12:20 a.m.
ORD
-
YOW
13h 25m
1 stop
C$ 514Multiple Airlines
Tue, 8 Sep - Sat, 12 Sep
Air Canada Logo
5:20 p.m. - 8:41 p.m.
YOW
-
ORD
4h 21m
1 stop
Air Canada Logo
2:00 p.m. - 7:52 p.m.
ORD
-
YOW
4h 52m
1 stop
C$ 777Air Canada
Fri, 4 Sep - Mon, 7 Sep
Air Canada Logo
12:00 p.m. - 4:57 p.m.
YOW
-
ORD
5h 57m
1 stop
Air Canada Logo
9:55 a.m. - 5:15 p.m.
ORD
-
YOW
6h 20m
1 stop
C$ 827Air Canada
Fri, 4 Sep - Mon, 7 Sep
Air Canada Logo
5:20 p.m. - 8:51 p.m.
YOW
-
ORD
4h 31m
1 stop
Air Canada Logo
10:40 a.m. - 1:59 p.m.
ORD
-
YOW
2h 19mdirect
C$ 835Air Canada
Wed, 23 Sep - Wed, 23 Sep
United Airlines Logo
6:05 a.m. - 4:52 p.m.
YOW
-
ORD
11h 47m
2 stops
United Airlines Logo
9:35 p.m. - 9:56 a.m.
ORD
-
YOW
11h 21m
2 stops
C$ 945United Airlines
Sat, 24 Oct - Wed, 28 Oct
United Airlines Logo
6:25 a.m. - 7:44 a.m.
YOW
-
ORD
2h 19mdirect
United Airlines Logo
8:50 a.m. - 3:07 p.m.
ORD
-
YOW
5h 17m
1 stop
C$ 957United Airlines
Thu, 3 Sep - Mon, 7 Sep
United Airlines Logo
5:20 p.m. - 6:46 p.m.
YOW
-
ORD
2h 26mdirect
United Airlines Logo
6:25 a.m. - 6:55 p.m.
ORD
-
YOW
11h 30m
1 stop
C$ 957United Airlines
Booking Insights

KAYAK's insights & trends for Ottawa to O'Hare Intl flights

Get data-powered insights and trends into flights from Ottawa to O'Hare Intl to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ottawa to Chicago O'Hare Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ottawa to Chicago O'Hare Intl Airport departing in September.

Flight prices are below average for this route right now.

Flights to Chicago O'Hare Intl Airport from Ottawa usually cost between C$ 878 and C$ 1,148 in September.
The lowest price found in the past 5 days was C$ 507 on Multiple Airlines (11 Sep–18 Sep).

What’s the cheapest day of the week to fly from Ottawa to Chicago O'Hare Airport?

The average price of all round-trip flights from Ottawa to Chicago O'Hare Intl Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Ottawa to Chicago O'Hare Airport, look for departures on Wednesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Chicago O'Hare Airport, Sunday is the cheapest day to fly and Tuesday is the most expensive.

What is the cheapest month to fly from Ottawa to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ottawa to Chicago O'Hare Intl Airport is October, where tickets cost C$ 488 (return) on average. On the other hand, the most expensive months are March and January, where the average cost of round-trip tickets is C$ 1,249 and C$ 1,137 respectively.

Can I save money by flying with a layover from Ottawa to Chicago O'Hare Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 946 on average.

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Expert advice

Expert advice for your flight from Ottawa to O'Hare Intl

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Air Canada and ORD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Mark Stachiew

Mark Stachiew

Expert on YOW

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Read more

Good to know

Low season

March

Cheapest flight

C$ 296
Best time to beat the crowds but there is an average 40% increase in price.
Most popular time to fly (5% more expensive on average)
Flight from Ottawa to Chicago O'Hare Airport

When to book flights from Ottawa to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Ottawa to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ottawa to Chicago O'Hare Airport flights

  • What is the cheapest flight from Ottawa to Chicago O'Hare Intl Airport?

    In the last 5 days, the lowest price for a flight from Ottawa to Chicago O'Hare Intl Airport was C$ 296 for a one-way ticket and C$ 507 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Ottawa to Chicago O'Hare Airport?

    Air Canada, and Cathay Pacific offer inflight Wi-Fi service on the Ottawa to Chicago O'Hare Airport flight route.

  • Which aircraft models fly most regularly from Ottawa to Chicago O'Hare Airport?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Ottawa to Chicago O'Hare Airport flight route.

  • Which airline alliances offer flights from Ottawa to Chicago O'Hare Airport?

    Star Alliance is the only airline alliance operating flights between Ottawa and Chicago O'Hare Airport.

  • On which days can I fly direct from Ottawa to Chicago O'Hare Airport?

    There are direct flights from Ottawa to Chicago O'Hare Airport on a daily basis.

  • Which is the best airline for flights from Ottawa to Chicago, United Airlines or Air Canada?

    The two airlines most popular with KAYAK users for flights from Ottawa to Chicago are United Airlines and Air Canada. With an average price for the route of C$ 779 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of C$ 1,000 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Ottawa to Chicago O'Hare Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ottawa to Chicago O'Hare Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ottawa to Chicago O'Hare Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Ottawa is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ottawa to Chicago O'Hare Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago O'Hare Airport with an airline and back to Ottawa with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ottawa to Chicago O'Hare Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago O'Hare Airport from Ottawa up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Ottawa to Chicago O'Hare Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 373 or less one-way and C$ 796 or less round-trip.

Prefer to fly direct from Ottawa to Chicago O'Hare Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Ottawa to Chicago O'Hare Intl.
Find which airlines fly direct from Ottawa Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Ottawa to Chicago O'Hare Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more nonstop flights

Direct returns

Chicago O'Hare Intl to Ottawa

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more nonstop flights

Reviews of the top airlines flying from Ottawa to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ottawa to O'Hare Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10052 reviews
7.1Entertainment
7.7Boarding
7.3Comfort
6.6Food
8.1Crew
Airline reviews

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

2.0 MediocreGreg, Jun 2026
YYZ - ORD
Read more United Airlines reviews

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

My connecting gate in .Chicago was across the aisle from my arriving gate. Otherwise I would not have made my connection. So that was very fortunate.

My flight was delayed by a whole day, so I lost a day of my vacation.

Wifi wasn't working on one of the UA flights after boarding.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

Great crew, friendly. Found the trip long just sitting with no onboard entertainment

It's kindof ridiculous that your system is even asking me about this since my flight was canceled and I wasn't rescheduled.

flight was delayed 6 hours for weather, then cancelled because of the crash in toronto, but none of the links to cancel or rebook my flights are working

They charge 5 dollars for plastic headphones for a flight of 1 hour! Seats are awful. Service is terrible.

Everything was seamless. I would have appreciated knowing there would not be any real food available for purchase in advance. Otherwise a great experience. Thank you!

I was mostly pleased. My greatest disappointment was with respect to the timely update to the estimated departure and arrival times. It was especially sad that the arrival time was not updated online once we were in flight so as to allow my wife to arrive on time to the airport. She was not happy.

Seats weren't comfortable, could have used more let room

Flight was delayed more than 120 min. I had carry on bag but the airplane was full and they had to get it checked in. I had to wait for the small carry on bag at the airport carousel

Flight was delayed 3 hrs, one of the flt attendants was rude to me & I was forced to pay for a middle seat.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

One United employee a little impatient, also on flight WiFi was out for some time. I was happy to receive a complimentary alcoholic beverage for volunteering to check my carry on bag.

Everything you need to know for your flight from Ottawa to O'Hare Intl

Information on your arrival and departure airports

Ottawa (YOW)
O'Hare Intl (ORD)