YOW - ORD

C$ 287 Find Cheap Flights from Ottawa to Chicago O'Hare Airport

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 3/8. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to Chicago, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
C$ 551
Typical prices: C$ 559-C$ 477
Multiple Airlines
Thu 24/9Sun 27/9
YOW - ORD • 1 stop
Cheapest direct flights
C$ 934
Typical prices: C$ 907-C$ 621
United Airlines
Fri 24/7Sun 26/7
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
Cheapest • from C$ 552 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with United Airlines. Average duration is 2h 24m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to travel
Cheapest • 42% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Thu, 24 Sep - Sun, 27 Sep
Multiple Airlines Logo
6:55 a.m. - 2:35 p.m.
YOW
-
ORD
8h 40m
1 stop
Multiple Airlines Logo
11:45 a.m. - 8:05 a.m.
ORD
-
YOW
19h 20m
1 stop
C$ 551Multiple Airlines
Wed, 21 Oct - Tue, 27 Oct
American Airlines Logo
8:40 a.m. - 2:05 p.m.
YOW
-
ORD
6h 25m
1 stop
American Airlines Logo
11:40 a.m. - 6:24 p.m.
ORD
-
YOW
5h 44m
1 stop
C$ 552American Airlines
Wed, 26 Aug - Sat, 5 Sep
Multiple Airlines Logo
7:00 a.m. - 12:25 p.m.
YOW
-
ORD
30h 25m
2 stops
Multiple Airlines Logo
7:00 a.m. - 12:54 p.m.
ORD
-
YOW
4h 54m
1 stop
C$ 553Multiple Airlines
Thu, 17 Sep - Mon, 21 Sep
Multiple Airlines Logo
6:25 p.m. - 11:00 a.m.
YOW
-
ORD
17h 35m
1 stop
Multiple Airlines Logo
3:20 p.m. - 8:05 a.m.
ORD
-
YOW
15h 45m
1 stop
C$ 556Multiple Airlines
Thu, 10 Sep - Mon, 14 Sep
Multiple Airlines Logo
6:25 p.m. - 11:00 a.m.
YOW
-
ORD
17h 35m
1 stop
Multiple Airlines Logo
3:20 p.m. - 8:05 a.m.
ORD
-
YOW
15h 45m
1 stop
C$ 562Multiple Airlines
Tue, 20 Oct - Mon, 26 Oct
American Airlines Logo
8:40 a.m. - 2:05 p.m.
YOW
-
ORD
6h 25m
1 stop
American Airlines Logo
9:40 a.m. - 4:49 p.m.
ORD
-
YOW
6h 09m
1 stop
C$ 573American Airlines
Wed, 2 Sep - Sat, 5 Sep
Porter Airlines Logo
8:00 a.m. - 11:00 a.m.
YOW
-
ORD
4h 00m
1 stop
Porter Airlines Logo
7:00 a.m. - 12:54 p.m.
ORD
-
YOW
4h 54m
1 stop
C$ 574Porter Airlines
Wed, 9 Sep - Mon, 14 Sep
Multiple Airlines Logo
6:55 a.m. - 2:35 p.m.
YOW
-
ORD
8h 40m
1 stop
Multiple Airlines Logo
3:20 p.m. - 8:05 a.m.
ORD
-
YOW
15h 45m
1 stop
C$ 576Multiple Airlines
Fri, 24 Jul - Sun, 26 Jul
American Airlines Logo
8:40 a.m. - 2:22 p.m.
YOW
-
ORD
6h 42m
1 stop
American Airlines Logo
2:38 p.m. - 9:20 p.m.
ORD
-
YOW
5h 42m
1 stop
C$ 580American Airlines
Fri, 24 Jul - Sun, 26 Jul
American Airlines Logo
8:40 a.m. - 2:22 p.m.
YOW
-
ORD
6h 42m
1 stop
American Airlines Logo
2:38 p.m. - 9:20 p.m.
ORD
-
YOW
5h 42m
1 stop
C$ 581American 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.

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 Saturdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Chicago O'Hare Airport, Monday 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 September, where tickets cost C$ 478 (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$ 1,237 and C$ 1,126 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$ 865 on average.

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.

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.

Good to know

Low seasonMarch
Cheapest flightC$ 287
Best time to beat the crowds but there is an average 49% increase in price.
Most popular time to fly and prices are also 23% lower 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$ 287 for a one-way ticket and C$ 551 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$ 635 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$ 866 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$ 409 or less one-way and C$ 635 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 9842 reviews
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

2.0 MediocreLynn, Jun 2026
DCA - ORD
Read more United Airlines reviews

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

I flew from Barcelona to Chicago on UA yesterday. The flight was on time, the pilots did a great job and the flight attendants were super nice. All of them. Also food was good, and the drinks, including wine were served a few times during our flight. I highly recommend this airline.

Boarded early, left early, arrived 40 mins early! A win win for me!

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

This flight is a quick way to get to Chicago, but a bit expensive.

The clerk at check in for my bags was very rude. My credit card was hacked during my vacation and she told me it was not possible to pay in cash for my bag. “You bought the cheapest ticket, you should have bought a ticket that included a bag. If you cannot pay with a credit card, we will not let you on this flight”. She spoke to her supervisor and then told me , I could ask other passengers, if they would use their credit card to check my bag. I had to beg 5 different people, till one agreed to use their credit card. I payed them cash of course. This was a very stressful and humiliating experience for me. I strongly suggest you build in some kind of provision for travelers who got robbed.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

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

The flight was good. My luggage didn’t land with me when I arrived in Columbus. So grateful I was able to get my luggage back within the 2 hours😍👍.

It was out first time flying Air Canada and it was ok, comfort-wise. I hope airlines are able to get a quiet room installed for young children flying. Screaming and crying the whole time in business class is quite unfortunate. That was the only thing that really messed up the experience.

Staff were very friendly. Plane left on time and arrived on time.

Air traffic delay meant boarding started, then plane was evacuated and passengers sent back to the terminal for 1 hour. Very little information shared.

The crew was amazing! I was a bit surprised and disappointed that there was not wifi available for personal use. The only thing I would change would be the seat cushions. They are not comfortable at all for long flights.

After 3 hours of delays, they ended up cancelling my flight. And although I could purchase one-way tickets to get to my destination, they would not offer me these flights as compensation for the cancelled flight, and I didn't end up making it home until 13 hours after I was originally supposed to arrive. It made for an extremely strenuous end to an otherwise good trip.

It was a very small plane and was ok. No food or entertainment so there should be an option for NA.

We were happy with the service and cost of checking a bag

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

Flying with Air Canada is still better than the discount airlines like Flair. The seats are more comfortable and the on-board entertainment is better, with each seat having a built in screen and lots of content to watch. Onboard WIFI is also great to have, as well as plugs for charging. I think passengers in general are getting better at not bringing too much luggage onboard, and Air Canada is better at managing this without customers feeling like they are being taken advantage of with extra fees. I have travelled on different airlines and all seem to be loading faster, with fewer people bringing both a carry on and a personal item. Now I just bring one item and it fits under the seat so I don't need to worry about finding a place in the overhead bins. Overall, across the industry, asking customers to pay for carry on baggage is fair because it allows customers to only pay for what they need, and it helps to keep the planes on time. Kudos to Air Canada for its approach - the desired result is achieved without customers feeling that they are being surprised and caught with unexpected extra fees.

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

Information on your arrival and departure airports