YUL - ORD

$160 Find Cheap Flights from Montreal 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 Montreal to O'Hare Intl departing on 10/15. 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 Montreal 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 Montreal 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
$265
Typical prices: $428-$276
Air Canada
Sat 5/23Wed 5/27
YUL - ORD • Non-stop
Cheapest one-way
$160
Typical prices: $156-$334
Porter Airlines
Thu 10/15
YUL - ORD • 1 stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
United's Economy Plus offers extra legroom for comfort.
Avoid the 6am flight due to security opening times.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
Top airlines
Cheapest • from $265 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Air Canada, American Airlines and United Airlines. Average duration is 2h 42m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $189 (round-trip)
Shortest trip • 5h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 54% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
Good to know
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Good to know
Good to know
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Start a new search
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 Montreal to O'Hare Intl (YUL-ORD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal 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 Montreal to O'Hare Intl

Sat, May 23 - Wed, May 27
Air Canada Logo
8:40 am - 10:18 am
YUL
-
ORD
2h 38mnonstop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$265Air Canada
Fri, May 29 - Sun, May 31
Air Canada Logo
6:30 pm - 8:08 pm
YUL
-
ORD
2h 38mnonstop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$268Air Canada
Mon, Jun 8 - Wed, Jun 10
Air Canada Logo
2:30 pm - 8:16 pm
YUL
-
ORD
6h 46m
1 stop
Air Canada Logo
7:25 am - 1:45 pm
ORD
-
YUL
5h 20m
1 stop
$270Air Canada
Thu, Jun 18 - Sat, Jun 20
Air Canada Logo
8:40 am - 10:16 am
YUL
-
ORD
2h 36mnonstop
Air Canada Logo
7:25 am - 1:47 pm
ORD
-
YUL
5h 22m
1 stop
$271Air Canada
Sat, May 9 - Sun, May 10
Air Canada Logo
6:30 pm - 8:08 pm
YUL
-
ORD
2h 38mnonstop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$272Air Canada
Thu, May 21 - Mon, May 25
Air Canada Logo
6:30 pm - 8:08 pm
YUL
-
ORD
2h 38mnonstop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$273Air Canada
Thu, Jun 18 - Sat, Jun 20
Air Canada Logo
2:30 pm - 8:16 pm
YUL
-
ORD
6h 46m
1 stop
Air Canada Logo
7:25 am - 1:47 pm
ORD
-
YUL
5h 22m
1 stop
$274Air Canada
Fri, May 29 - Sun, May 31
Air Canada Logo
6:30 pm - 8:08 pm
YUL
-
ORD
2h 38mnonstop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$277Air Canada
Thu, May 21 - Mon, May 25
Air Canada Logo
8:40 am - 10:18 am
YUL
-
ORD
2h 38mnonstop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$278Air Canada
Fri, May 22 - Mon, May 25
Air Canada Logo
11:10 am - 2:55 pm
YUL
-
ORD
4h 45m
1 stop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$279Air Canada
Booking Insights

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

Get data-powered insights and trends into flights from Montreal 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 Montreal Pierre Elliott Trudeau Intl Airport 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 Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport departing in May.

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

The average price of all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport 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 Montreal to Chicago O'Hare Airport, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Chicago O'Hare Airport, Thursday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport 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 Montreal Pierre Elliott Trudeau Intl Airport 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 Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport is April, where tickets cost $286 (return) on average. On the other hand, the most expensive months are October and March, where the average cost of round-trip tickets is $397 and $389 respectively.

Can I save money by flying with a layover from Montreal Pierre Elliott Trudeau Intl Airport 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 $277 on average.

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport, you should book around 5 weeks before departure, which saves you about 54% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Expert advice

Expert advice for your flight from Montreal 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, United Airlines 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.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Brandon Schultz

Brandon Schultz

Expert on YUL

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Good to know

Low seasonFebruary
Cheapest flight$160
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Montreal to Chicago O'Hare Airport

When to book flights from Montreal to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Montreal 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.

Flights from Montreal to O'Hare Intl: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Montreal to O'Hare Intl 
Steven AnthonyFlew with United AirlinesAug 2024
Don't take the 6am flight. Airport security and customs only open at 430am. So if you show up the recommended 3 hours before, you're waiting in line for nothing
Verified travelerFlew with United AirlinesApr 2024
Come prepared with your own entertainment as the flight did not offer in flight entertainment

FAQs for booking Montreal to Chicago O'Hare Airport flights

  • What is the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport?

    In the last 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport was $160 for a one-way ticket and $265 for a round-trip.

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

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

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

    Air Canada, United Airlines, American Airlines, Delta, and WestJet offer inflight Wi-Fi service on the Montreal to Chicago O'Hare Airport flight route.

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

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

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

    oneworld, and Star Alliance are the airline alliances operating flights between Montreal and Chicago O'Hare Airport, with oneworld being the most commonly used for this route.

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

    There are nonstop flights from Montreal to Chicago O'Hare Airport on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Montreal to Chicago are United Airlines and Air Canada. With an average price for the route of $384 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 $321 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Montreal 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 Montreal 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 Montreal 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 Montreal 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 Montreal 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 Montreal with another airline. Booking your flights between Montreal 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 Montreal 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 Montreal 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 Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $226 or less one-way and $303 or less round-trip.

Prefer to fly direct from Montreal 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 Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl.
Find which airlines fly direct from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl

Monday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Tuesday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Wednesday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Thursday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Friday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Saturday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Sunday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

See more direct flights

Direct returns

Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Tuesday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Wednesday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Thursday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Friday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Saturday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

Sunday

Air Canada,American Airlines,United Airlines

Air Canada,American Airlines, +1 more

See more direct flights

Reviews of the top 3 airlines serving from Montreal to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from Montreal 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 Montreal 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 9677 reviews
7.1Entertainment
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
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

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

The new planes (American Eagle) are beautiful and especially comfortable. The flight attendants are consistently professional and courteous. And, while it may seem inconsequential, the new liquid tube of coffee creamer—in contrast to the powdered coffee creamer—makes all the difference in a cup of coffee.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

Didn't make it back on American Airlines due to a maintenance issue. The communication and updates were terrible. I ended up returning on Aero Mexico which had a much nicer aircraft with a large entertainment screen with movies and shows AND they had a nice inflight meal. That was a treat after being delayed 26 hours! I think some additional flight miles, or something should be offered for that long of a delay ---it was not pleasant at all---very physical and emotional experience.

Crew at the gate was very crabby and not at all polite. The plane was very hot the entire flight. And the seat cushion was very worn out.

The staff are very, very professional. It's what flying should feel like.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

Delays with no explanation. It could have been handled better.

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.

Be careful about the bad policy and when purchasing seats

Very disappointed with premier lounge. Food selection very poor, both coffee machines out of order. For the price you charge for an upgrade, the seats don’t fully recline, movie selection is old. Not very good value. Asian airlines are light years ahead at a more affordable price.

We left over 2 hours late and they didn't even give us a complimentary snack, when getting to the desk I asked if I could be put in a row with only 1 other person or an empt y one I was told the flight was full when the last two rows were empty. All around over it

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

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

The staff could not have been any friendlier. Lots of usb ports on our aircraft.

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

Information on your arrival and departure airports