YOW - ORD

$216 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 5/22. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$353
Typical prices: $558-$400
Multiple Airlines
Tue 5/19Tue 5/26
YOW - ORD • 2 stops
Cheapest non-stop
$635
Typical prices: $602-$401
United Airlines
Sat 5/30Tue 6/2
YOW - ORD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus adds 6 inches of legroom.
Air Canada's Preferred Economy adds 4 inches of legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
WestJet
Cheapest • from $391 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 2h 28m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to travel
September
Cheapest • 39% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s 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

Tue, May 19 - Tue, May 26
Multiple Airlines Logo
7:00 am - 11:13 pm
YOW
-
ORD
17h 13m
2 stops
Multiple Airlines Logo
5:30 pm - 6:00 pm
ORD
-
YOW
23h 30m
1 stop
$353Multiple Airlines
Wed, May 20 - Mon, May 25
WestJet Logo
7:20 am - 4:40 pm
YOW
-
ORD
10h 20m
1 stop
WestJet Logo
5:30 pm - 5:35 am
ORD
-
YOW
11h 05m
1 stop
$391WestJet
Tue, May 19 - Tue, May 26
Multiple Airlines Logo
7:00 am - 10:14 pm
YOW
-
ORD
16h 14m
2 stops
Multiple Airlines Logo
5:30 pm - 2:55 pm
ORD
-
YOW
20h 25m
2 stops
$399Multiple Airlines
Mon, Jun 1 - Thu, Jun 4
Multiple Airlines Logo
7:00 am - 12:37 pm
YOW
-
ORD
30h 37m
1 stop
Multiple Airlines Logo
12:59 pm - 12:17 pm
ORD
-
YOW
22h 18m
1 stop
$400Multiple Airlines
Thu, May 21 - Mon, May 25
American Airlines Logo
8:40 am - 2:17 pm
YOW
-
ORD
6h 37m
1 stop
American Airlines Logo
8:08 am - 2:30 pm
ORD
-
YOW
5h 22m
1 stop
$401American Airlines
Mon, May 25 - Mon, Jun 1
Multiple Airlines Logo
7:20 am - 4:40 pm
YOW
-
ORD
10h 20m
1 stop
Multiple Airlines Logo
7:33 pm - 5:37 pm
ORD
-
YOW
21h 04m
2 stops
$405Multiple Airlines
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
9:05 am - 8:11 pm
YOW
-
ORD
12h 06m
1 stop
Multiple Airlines Logo
1:49 pm - 5:37 pm
ORD
-
YOW
26h 48m
1 stop
$410Multiple Airlines
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
9:05 am - 8:11 pm
YOW
-
ORD
12h 06m
1 stop
Multiple Airlines Logo
5:05 am - 8:05 pm
ORD
-
YOW
14h 00m
2 stops
$412Multiple Airlines
Fri, May 29 - Tue, Jun 2
Multiple Airlines Logo
7:00 am - 11:13 pm
YOW
-
ORD
17h 13m
1 stop
Multiple Airlines Logo
5:05 am - 8:05 pm
ORD
-
YOW
14h 00m
2 stops
$413Multiple Airlines
Fri, May 29 - Mon, Jun 1
Multiple Airlines Logo
7:00 am - 11:13 pm
YOW
-
ORD
17h 13m
1 stop
Multiple Airlines Logo
1:50 pm - 4:53 pm
ORD
-
YOW
26h 03m
2 stops
$415Multiple 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 May.

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.

Your flight ticket price will generally be cheaper if you fly to Chicago O'Hare Airport on a Saturday and more expensive on a Monday. On your return trip to Ottawa, you should consider flying back on a Saturday, and avoid Mondays for better deals.

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 $342 (return) on average. On the other hand, the most expensive months are March and January, where the average cost of round-trip tickets is $885 and $806 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 $444 on average.

Find deals
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 Air Canada and United Airlines

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.

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Good to know

Low seasonMarch
Cheapest flight$216
Best time to beat the crowds but there is an average 57% increase in price.
Most popular time to fly and prices are also 22% 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 3 days, the lowest price for a flight from Ottawa to Chicago O'Hare Intl Airport was $216 for a one-way ticket and $353 for a round-trip.

  • Do I need a passport to fly between Ottawa and Chicago O'Hare Airport?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Ottawa and on arrival in Chicago O'Hare Airport.

  • Which airports will I be using when flying from Ottawa to Chicago O'Hare Airport?

    When flying out of Ottawa you will be using Ottawa. You will be landing at Chicago O'Hare Airport, also known as Chicago O'Hare Intl.

  • 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 nonstop flights from Ottawa to Chicago O'Hare Airport on a daily basis.

  • 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 travelers 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. Booking your flights between Ottawa and ORD can sometimes prove cheaper using this method.

  • 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.

  • Which airlines provide the cheapest flights from Ottawa to Chicago O'Hare Airport?

    In the past 3 days, the cheapest round-trip tickets from Ottawa to Chicago O'Hare Airport were found on WestJet ($391) and American Airlines ($401).

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 $252 or less one-way and $409 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 direct 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 direct flights

Reviews of the top airline 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 9678 reviews
8.1Crew
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

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.

8.0 ExcellentAnonymous, Apr 2026
ZRH - ORD
Read more United Airlines reviews

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

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

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

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

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)