ORD - YUL

$143 Find Cheap Flights from Chicago O'Hare Airport to Montreal - 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 O'Hare Intl to Montreal departing on 9/2. 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.
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Everything you should know

Cheapest round-trip
$275
Typical prices: $359-$483
Air Canada
Sat 7/18Sat 7/18
ORD - YUL • Non-stop
Cheapest non-stop
$290
Typical prices: $317-$489
Air Canada
Sat 8/22Mon 8/24
ORD - YUL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Air Canada Preferred Economy adds up to 4 extra inches of legroom for a fee.
United Economy Plus offers up to 6 more inches; Priority Boarding helps bin space.
Expert advice
Expert advice
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Expert advice
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Top airlines
Cheapest • from $275 (round-trip)
Best reviews • 7.9 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 24m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 86% on-time
Best time • Fewest delays
Insights
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Insights
Top layover airports
Cheapest • Avg $325 (round-trip)
Shortest trip • 4h 35m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 56% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 33% price drop
Most popular
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We hope you love your trip to Montreal!
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Flight Deals

Cheap Flights from O'Hare Intl to Montreal (ORD-YUL)

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

Sat, Jul 18 - Sat, Jul 18
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
Air Canada Logo
2:30 pm - 8:29 pm
YUL
-
ORD
6h 59m
1 stop
$275Air Canada
Tue, Aug 11 - Wed, Aug 12
Air Canada Logo
2:00 pm - 9:47 pm
ORD
-
YUL
6h 47m
1 stop
Air Canada Logo
8:40 am - 10:16 am
YUL
-
ORD
2h 36mnonstop
$281Air Canada
Mon, Jul 20 - Mon, Jul 20
Air Canada Logo
9:50 am - 4:22 pm
ORD
-
YUL
5h 32m
1 stop
Air Canada Logo
6:30 pm - 8:05 pm
YUL
-
ORD
2h 35mnonstop
$283Air Canada
Wed, Sep 16 - Thu, Sep 17
Air Canada Logo
3:40 pm - 6:55 pm
ORD
-
YUL
2h 15mnonstop
Air Canada Logo
5:00 am - 9:00 am
YUL
-
ORD
5h 00m
1 stop
$286Air Canada
Sat, Aug 22 - Mon, Aug 24
Air Canada Logo
8:40 am - 11:59 am
ORD
-
YUL
2h 19mnonstop
Air Canada Logo
6:30 pm - 8:05 pm
YUL
-
ORD
2h 35mnonstop
$290Air Canada
Sat, Aug 22 - Mon, Aug 24
Air Canada Logo
8:40 am - 11:59 am
ORD
-
YUL
2h 19mnonstop
Air Canada Logo
6:30 pm - 8:05 pm
YUL
-
ORD
2h 35mnonstop
$291Air Canada
Sat, Aug 15 - Mon, Aug 17
Air Canada Logo
8:40 am - 11:59 am
ORD
-
YUL
2h 19mnonstop
Air Canada Logo
6:30 pm - 8:05 pm
YUL
-
ORD
2h 35mnonstop
$292Air Canada
Thu, Aug 13 - Thu, Aug 20
Air Canada Logo
8:40 am - 11:59 am
ORD
-
YUL
2h 19mnonstop
Air Canada Logo
6:30 pm - 8:05 pm
YUL
-
ORD
2h 35mnonstop
$294Air Canada
Sun, Sep 20 - Tue, Sep 22
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
Air Canada Logo
1:15 pm - 2:52 pm
YUL
-
ORD
2h 37mnonstop
$295Air Canada
Sat, Aug 22 - Mon, Aug 24
Air Canada Logo
7:25 am - 1:47 pm
ORD
-
YUL
5h 22m
1 stop
Air Canada Logo
4:30 pm - 8:29 pm
YUL
-
ORD
4h 59m
1 stop
$297Air Canada
Booking Insights

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

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

How much is a round-trip flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport departing in July.

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport is February, where tickets cost $256 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $475 and $461 respectively.

Can I save money by flying with a layover from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau 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 $416 on average.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport, you should book around 4 weeks before departure, which saves you about 56% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

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

 
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.

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 seasonJanuary
Cheapest flight$143
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Chicago O'Hare Airport to Montreal

When to book flights from O'Hare Intl to Montreal

Are your dates flexible? Find out the best times to travel from O'Hare Intl to Montreal 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 O'Hare Intl to Montreal: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from O'Hare Intl to Montreal 
ScottFlew with Air CanadaJun 2026
Make sure you have enough time between connecting flights so ½ of your baggage doesn't miss the flight and take another 24hrs to show up
valerieFlew with Air CanadaJan 2025
“Meal” usually means more than a light snack. I thought what they served was an appetizer not the total meal. So I’d eat before or bring food.

FAQs for booking Chicago O'Hare Airport to Montreal flights

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

    In the last 5 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport was $143 for a one-way ticket and $275 for a round-trip.

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

    A passport is required to fly from Chicago O'Hare Airport to Montreal.

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

    On your way to Montreal, you’ll fly out from Chicago O'Hare Intl. You’ll be landing at Montreal Pierre Elliott Trudeau Intl.

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

    All the following airlines offer inflight Wi-Fi service on the Chicago O'Hare Airport to Montreal flight route: Air Canada, American Airlines, United Airlines, Porter Airlines, Iberia, Finnair, and British Airways.

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

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

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

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

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

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

  • Which is the best airline for flights from Chicago to Montreal, Porter Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Chicago to Montreal are Porter Airlines and Delta. With an average price for the route of $337 and an overall rating of 7.9, Porter Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $236 and an overall rating of 7.8.

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

    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 Chicago O'Hare Airport to Montreal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from Chicago O'Hare Airport 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 Chicago O'Hare Airport to Montreal?

    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 Montreal with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and YUL 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 Chicago O'Hare Airport to Montreal?

    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 Montreal from Chicago O'Hare Airport 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $168 or less one-way and $404 or less round-trip.

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

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

Direct departures

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

Direct returns

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

Reviews of the top 5 airlines serving from O'Hare Intl to Montreal

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Montreal. 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 O'Hare Intl to Montreal? 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.
7.9
Porter AirlinesOverall score based on 442 reviews
6.9Entertainment
8.6Crew
7.9Comfort
7.5Food
8.2Boarding
Airline reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

6.0 GoodHarsh, Apr 2026
JFK - YYZ
Read more Porter Airlines reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

The flight booking code given by Kayak was not the correct one used by the airline. I had to call to get the correct one. It was never sent to me. Totally unacceptable!

Much roomer than air Canada! Great flight for the price. No complaints

As a first time flyer with Porter I was happy with the service and comfort of the airline.

3.5 hr delay for a 1 hr work flight. No information as to why the delay until 20 mins before boarding.

Other than wifi no on board entertainment. Will use them again, roomier seats than other airlines and snacks and beverages, better than average

The flight was fine see earlier note for the problem

The staff is always great. Just the fact that our flight was the only one delayed from Halifax when all other carries were still flying. It happen a year ago out of Toronto as well. All others were flying but our flight got cancelled 1 hr before the time of departure.

Chaotic boarding, but mostly my issues are with Toronto airport

Tight transfer in Montreal. (15 min) However, we made it, as did my luggage.

Very easy to use and convenient, you can perform any action within the same portal

Okay considering we had weather delays which the Pilot notified us of immediately!

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

Stop changing gates. Stop cancelling flights Stop moving my seat.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

Did not get a vegetarian option in 1st class and the video was not working.

It was very cold because the air conditioner was on high power, and my son got sick.

Horrible. Flight ORD to CGH was okay, but Paris was a nightmare. Old planes, delays, involuntary downgrades, broken planes, terrible communication. CGH to CPT was my worst flight ever.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Delay and keep changing gates. I have to run around from B to C then to E.

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

Liked nothing. As per previous segment it was delay delay delay.

Basics were there, but a 5:15 flight with almost no food ans no entertainment, it is quite long.

Extremely uncomfortable sitting in a small space for 2 hours, especially for older people. Understood it was circumstantial.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

We left really late. Things that were out if anybody’s control I guess.

Excellent as always. Service was excellent and fully bilingual. Cannot complain .Will travel again. Always have and will continue. Highly recommended.

The seat was not even cleaned. It has full of cookie crums probably from last flight's passenger. Its basic expectation that, seats are clean.

Very turbulent flight, no drinks, very little service, unorganized boarding, gate changed multiple times

The flight was delayed significantly. Communication during the flight was abrupt and caused some panic as we were navigating turbulence. It was also too loud and every announcement felt startling. The flight attendants did not offer any assurances and I felt unsettled most of the flight. The seats, floor and tray table was very dirty. The seat next to me was broken and the passenger sitting there was very uncomfortable. He had a spring in his back and his seat made terrible squeaking noises through the flight.

Significant delays on my trip to Chicago and my trip back to NY

Delayed by 5 hours and I had to wit in the airport for more than 6+ hours.

I’ve got 31F seat and window seat . My 2 co passengers was AA crew members and they were very rude attitude and when I was going to use bathroom their gestures was very different and awkward and the guy beside me completely occupied the hand rest and I was really uncomfortable

It was so much better than expected, Ohare is not such a pleasant experience but American Airlines with the new, clean aeroplane and free Wi-Fi was outstanding and the crew so pleasant and helpful.

It wa sort of on time; the cab was left with some trash

My pillow had a shoe print on it, when I asked if I can have another pillow, I was told “I’m sorry but it is one pillow per guest, do YOU want to turn it inside out” to which I responded , no thanks I will go without. This is generally not ok, but For the price tag I paid flying business this is absolutely unacceptable. Hopefully American Airlines can update their accommodations to bedding that is not tossed on the ground and stepped on, or at least have a couple of extra pillows in hand, incase someone had decided to step on the pillows for what ever reason

I rarely vote ‘Excellent’ but this AA flight out of LGA was amazing. On time departure, early arrival, amazing crew, smooth flight, baggage came out quickly. It was the best airport/ flight experience that anyone could ask for/dream of. Highly recommend. I usually fly Delta but American Airlines really stepped up their game.

I'm 6'8" (2.03m) so more legroom would alwqys be appreciated, especially on long international flights. The food choices were underwhelming.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

Very bad, flight was cancelled due to strike and staff was unable to rebook us

Terrible confusion btw air Canada and United. Wasn’t able to change ticket because I had purchased on kayak. Rethinking booking tickets on this site, and will try to avoid United and aircanada going forward.

it was good but would be better if there were more clear directions as to how to clear or circumvent customs in Montreal.

For such a long flight they should offer tea or coffee in between two meals.

Tout était bien, comme pour la plupart des compagnies aériennes, le seul bémol était leurs système de divertissement qui a cessé de fonctionner en plein milieu du vol. Un peu décevant surtout quand il reste encore 2h de vol.

I did not like the heavy traffic to fly out of O'Hare. I had troubles checking-in. United app refused to accept my passport so I had to check-in at the airport. I had to check a bag but United could not read my credit card, so I had to buy a Visa debit card to pay for the luggage. It costed me an additional $6,00

We were group 5 to board… they got to group 3 or 4 and it seemed like everyone was boarding. But being rule abiding citizens, we waited until we asked and their answer was “oh, everyone just started coming.” We said passive aggressively “thanks for announcing that.” And then they finally said “boarding all zones.” We had seats near the front so by the time we finally boarded, the overhead bins in the front were full and we had very delicate ultralight backpacks we can’t check.

The flight was delayed five times and then cancelled. Initial communications about what to do were quite unclear.

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

Information on your arrival and departure airports