Cheap flights from Montreal to Chicago O'Hare Intl Airport from C$ 226
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/12. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — ORD
17 Jan — 24 Jan1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to Chicago O'Hare Intl are usually found in November or August, booked 78 days in advance, depart on a Thursday or Friday and return on a Monday
Cheap flight deals from Montreal to O'Hare Intl
Enter your travel dates to find the best prices.
Cheapest flights from Montreal to O'Hare Intl
Explore the most affordable flight options available from Montreal to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.
Wed 31/125:25 p.m.YUL - ORD
1 stop17h 19mUnited Airlines
Mon 5/17:00 a.m.ORD - YUL
1 stop4h 46mUnited Airlines
Deal found 16/12C$ 415
Wed 31/128:50 a.m.YUL - ORD
2 stops7h 20mAir Canada
Sat 3/18:40 p.m.ORD - YUL
1 stop4h 13mAir Canada
Deal found 16/12C$ 460
Wed 31/128:50 a.m.YUL - ORD
2 stops7h 20mAir Canada
Mon 5/18:45 p.m.ORD - YUL
1 stop4h 08mAir Canada
Deal found 16/12C$ 503
Wed 24/126:25 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Wed 31/123:55 p.m.ORD - YUL
1 stop6h 27mAir Canada
Deal found 17/12C$ 530
Fri 26/1212:10 p.m.YUL - ORD
1 stop6h 38mAir Canada
Wed 31/123:55 p.m.ORD - YUL
1 stop6h 27mAir Canada
Deal found 16/12C$ 544
Sat 27/126:00 a.m.YUL - ORD
Nonstop3h 05mAir Canada
Mon 23/210:35 a.m.ORD - YUL
Nonstop2h 25mAir Canada
Deal found 16/12C$ 552
Wed 31/128:50 a.m.YUL - ORD
2 stops7h 20mAir Canada
Sun 4/110:35 a.m.ORD - YUL
Nonstop2h 25mAir Canada
Deal found 16/12C$ 566
Best flights from Montreal to O'Hare Intl
Discover carefully curated flight deals from Montreal to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 18 December 2025.
Sun 15/26:00 a.m.YUL - ORD
Nonstop3h 00mUnited Airlines
Sun 15/26:00 p.m.ORD - YUL
Nonstop2h 17mUnited Airlines
Deal found 17/12C$ 260
Wed 4/27:00 a.m.YUL - ORD
1 stop7h 22mAmerican Airlines
Sat 7/26:38 a.m.ORD - YUL
1 stop7h 42mAmerican Airlines
Deal found 17/12C$ 260
Sat 14/212:52 p.m.YUL - ORD
1 stop8h 52mDelta
Tue 17/26:15 a.m.ORD - YUL
1 stop6h 25mDelta
Deal found 15/12C$ 298
Fri 13/26:00 a.m.YUL - ORD
Nonstop3h 00mUnited Airlines
Wed 18/210:35 a.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Deal found 17/12C$ 260
Fri 6/26:00 a.m.YUL - ORD
Nonstop3h 05mUnited Airlines
Mon 9/23:35 p.m.ORD - YUL
1 stop5h 07mUnited Airlines
Deal found 17/12C$ 270
Thu 5/26:00 a.m.YUL - ORD
1 stop8h 13mDelta
Sun 8/25:35 p.m.ORD - YUL
1 stop4h 51mDelta
Deal found 16/12C$ 298
Mon 2/24:45 p.m.YUL - ORD
Nonstop3h 06mUnited Airlines
Sat 7/21:00 p.m.ORD - YUL
1 stop5h 48mUnited Airlines
Deal found 17/12C$ 271
Wed 4/24:45 p.m.YUL - ORD
Nonstop3h 06mUnited Airlines
Sat 7/26:05 a.m.ORD - YUL
1 stop6h 23mUnited Airlines
Deal found 17/12C$ 271
Thu 19/23:00 p.m.YUL - ORD
1 stop7h 34mUnited Airlines
Mon 23/21:02 p.m.ORD - YUL
1 stop5h 46mUnited Airlines
Deal found 17/12C$ 278
Sat 31/14:45 p.m.YUL - ORD
Nonstop3h 06mUnited Airlines
Sat 7/25:52 p.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Deal found 17/12C$ 300
Direct flights from Montreal to O'Hare Intl
Explore direct flight options from Montreal to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 December 2025.
Thu 12/26:00 a.m.YUL - ORD
Nonstop3h 00mUnited Airlines
Mon 16/26:00 p.m.ORD - YUL
Nonstop2h 17mUnited Airlines
Deal found 17/12C$ 260
Thu 5/26:00 a.m.YUL - ORD
Nonstop3h 05mUnited Airlines
Sun 8/25:52 p.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Deal found 17/12C$ 262
Fri 6/23:50 p.m.YUL - ORD
Nonstop3h 00mAmerican Airlines
Mon 9/211:50 a.m.ORD - YUL
Nonstop2h 18mAmerican Airlines
Deal found 17/12C$ 266
Tue 10/26:25 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Thu 19/27:15 a.m.ORD - YUL
Nonstop2h 05mAir Canada
Deal found 17/12C$ 271
Sat 31/14:45 p.m.YUL - ORD
Nonstop3h 06mUnited Airlines
Sat 7/25:52 p.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Deal found 17/12C$ 300
Sat 31/16:25 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Sat 7/212:50 p.m.ORD - YUL
Nonstop2h 11mAir Canada
Deal found 17/12C$ 307
Mon 2/24:45 p.m.YUL - ORD
Nonstop3h 06mAir Canada
Sat 7/212:50 p.m.ORD - YUL
Nonstop2h 11mAir Canada
Deal found 17/12C$ 309
Thu 19/26:25 p.m.YUL - ORD
Nonstop2h 45mUnited Airlines
Mon 23/210:35 a.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Deal found 17/12C$ 324
Fri 30/16:00 a.m.YUL - ORD
Nonstop3h 05mUnited Airlines
Mon 2/210:35 a.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Deal found 16/12C$ 338
Thu 5/23:50 p.m.YUL - ORD
Nonstop3h 00mAmerican Airlines
Sun 8/211:50 a.m.ORD - YUL
Nonstop2h 18mAmerican Airlines
Deal found 16/12C$ 340
Last-minute flights from Montreal to O'Hare Intl
Discover last-minute flight deals from Montreal to O'Hare Intl. Data last updated 18 December 2025 and is based on user searches.
Thu 15/13:50 p.m.YUL - ORD
Nonstop3h 00mAmerican Airlines
Wed 4/28:09 a.m.ORD - YUL
1 stop6h 11mAmerican Airlines
Deal found 16/12C$ 346
Fri 30/13:50 p.m.YUL - ORD
Nonstop3h 00mAmerican Airlines
Fri 6/28:56 p.m.ORD - YUL
1 stop17h 24mAmerican Airlines
Deal found 16/12C$ 325
Fri 30/16:00 a.m.YUL - ORD
Nonstop3h 05mUnited Airlines
Mon 2/21:00 p.m.ORD - YUL
1 stop7h 42mUnited Airlines
Deal found 16/12C$ 338
Fri 30/17:00 a.m.YUL - ORD
1 stop6h 05mUnited Airlines
Fri 6/26:05 a.m.ORD - YUL
1 stop6h 23mUnited Airlines
Deal found 16/12C$ 344
Sat 31/14:45 p.m.YUL - ORD
Nonstop3h 06mUnited Airlines
Sat 7/25:52 p.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Deal found 17/12C$ 300
Sat 31/16:25 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Sat 7/212:50 p.m.ORD - YUL
Nonstop2h 11mAir Canada
Deal found 17/12C$ 307
One-way flights from Montreal to O'Hare Intl
Search for one-way flight options from Montreal to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 18 December 2025.
Wed 31/128:50 a.m.YUL - ORD
2 stops7h 20mAir Canada
Deal found 16/12C$ 226
Tue 17/36:00 a.m.YUL - ORD
Nonstop3h 00mUnited Airlines
Deal found 17/12C$ 229
Mon 12/110:45 a.m.YUL - ORD
3 stops25h 37mMultiple Airlines
Deal found 17/12C$ 233
Sun 8/36:00 a.m.YUL - ORD
Nonstop3h 00mUnited Airlines
Deal found 17/12C$ 234
Thu 15/16:45 a.m.YUL - ORD
1 stop15h 12mMultiple Airlines
Deal found 16/12C$ 238
Mon 9/39:25 a.m.YUL - ORD
Nonstop2h 53mAir Canada
Deal found 15/12C$ 240
Mon 16/38:00 a.m.YUL - ORD
1 stop28h 26mMultiple Airlines
Deal found 16/12C$ 242
Mon 12/16:25 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Deal found 16/12C$ 244
Tue 13/18:00 a.m.YUL - ORD
1 stop6h 01mAir Canada
Deal found 16/12C$ 245
Wed 31/125:25 p.m.YUL - ORD
1 stop17h 19mUnited Airlines
Deal found 16/12C$ 249
Tue 17/38:00 a.m.YUL - ORD
1 stop6h 01mAir Canada
Deal found 17/12C$ 251
Fri 13/39:15 a.m.YUL - ORD
1 stop15h 29mUnited Airlines
Deal found 17/12C$ 252
Find flight deals from Montreal to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 December 2025.
Customize your flight search to find flights from Montreal to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from Montreal to Chicago O'Hare Intl Airport that are best for you.
Fly from
Montreal
Fly to
O'Hare Intl
Route
Depart
Return
Price
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Sun 15/2
6:00 a.m.-8:00 a.m.
Nonstop3h 00m
Chicago O'Hare Intl
Sun 15/2
6:00 p.m.-9:17 p.m.
Nonstop2h 17m
C$ 260
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Wed 4/2
7:00 a.m.-1:22 p.m.
1 stop7h 22m
Chicago O'Hare Intl
Sat 7/2
6:38 a.m.-3:20 p.m.
1 stop7h 42m
C$ 260
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Fri 13/2
6:00 a.m.-8:00 a.m.
Nonstop3h 00m
Chicago O'Hare Intl
Wed 18/2
10:35 a.m.-2:00 p.m.
Nonstop2h 25m
C$ 260
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Fri 6/2
6:00 a.m.-8:05 a.m.
Nonstop3h 05m
Chicago O'Hare Intl
Mon 9/2
3:35 p.m.-9:42 p.m.
1 stop5h 07m
C$ 270
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Mon 2/2
4:45 p.m.-6:51 p.m.
Nonstop3h 06m
Chicago O'Hare Intl
Sat 7/2
1:00 p.m.-7:48 p.m.
1 stop5h 48m
C$ 271
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Wed 4/2
4:45 p.m.-6:51 p.m.
Nonstop3h 06m
Chicago O'Hare Intl
Sat 7/2
6:05 a.m.-1:28 p.m.
1 stop6h 23m
C$ 271
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Thu 19/2
3:00 p.m.-9:34 p.m.
1 stop7h 34m
Chicago O'Hare Intl
Mon 23/2
1:02 p.m.-7:48 p.m.
1 stop5h 46m
C$ 278
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Sat 14/2
12:52 p.m.-8:44 p.m.
1 stop8h 52m
Chicago O'Hare Intl
Tue 17/2
6:15 a.m.-1:40 p.m.
1 stop6h 25m
C$ 298
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Thu 5/2
6:00 a.m.-1:13 p.m.
1 stop8h 13m
Chicago O'Hare Intl
Sun 8/2
5:35 p.m.-11:26 p.m.
1 stop4h 51m
C$ 298
MontrealChicago
YUL - ORD
YULORD
Montreal Pierre Elliott Trudeau Intl
Sat 31/1
4:45 p.m.-6:51 p.m.
Nonstop3h 06m
Chicago O'Hare Intl
Sat 7/2
5:52 p.m.-9:17 p.m.
Nonstop2h 25m
C$ 300
Flights are sorted by cheapest round-trip flights first.
Deals found on 16/12
Showing 1-10 of 21 results
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Best time to book a flight from Montreal to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Montreal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Montreal to Chicago O'Hare Intl Airport
How far ahead should I book a flight from Montreal to Chicago O'Hare Intl Airport?
Use this chart to determine the optimal time to book a round-trip flight from Montreal to O'Hare Intl. Price data was last updated on 12 December 2025.
The price you pay for your flight from Montreal to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Montreal to Chicago O'Hare Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Montreal to Chicago O'Hare Intl Airport (average of C$ 215). Flying from Montreal to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from YMQ to ORD?
Find hourly flight availability from Montreal to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2025.
It’s typically best to fly out from Montreal to Chicago O'Hare Intl Airport in the evening. Doing so could potentially save you 64% on the flight price compared to flying at noon, which is usually more expensive.
What is the cheapest day to fly from Montreal to Chicago O'Hare Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Montreal to O'Hare Intl. Price data was last updated on 13 December 2025.
Travelers seeking maximum savings on their Montreal to Chicago O'Hare Intl Airport flight should consider departing on Saturday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Montreal to Chicago O'Hare Intl Airport
Explore weekly flight availability from Montreal to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 18 December 2025.
The most flights from YMQ to ORD are scheduled on a Tuesday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (16 on average).
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated 18 December 2025.
See what other customers who have flown with United Airlines,American Airlines, andAir Canada from Montreal to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Related info for your journey
Find useful and relevant information for your journey from Montreal to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How long is the flight from Montreal to Chicago O'Hare Intl Airport?
For as low as C$ 260, United Airlines can have you in Chicago O'Hare Intl Airport from Montreal in 3h. There are 1199 km between Montreal and Chicago O'Hare Intl Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Montreal to Chicago O'Hare Intl Airport round-trip?
Currently priced at C$ 177, American Airlines will fly you from Montreal to Chicago O'Hare Intl Airport and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and United Airlines - these airlines can fly you to your destination from C$ 255 and C$ 264, respectively. These flights start at 65% lower than the current average price 3 months from now.
What are the most reliable airlines from Montreal to Chicago O'Hare Intl Airport?
Consider Qatar Airways (88%), ANA (87%) or Qantas Airways (80%) when booking your flight. These represent the most reliable airlines when flying from Montreal to Chicago O'Hare Intl Airport.
What are the cheapest flights from Montreal to Chicago O'Hare Intl Airport?
Looking for the cheapest flight from Montreal to Chicago O'Hare Intl Airport? While on average our users pay C$ 1,461, our data indicates the cheapest price to be C$ 232. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around C$ 242.
Can I find deals for business class flights from Montreal to O'Hare Intl?
Yes. Cheapflights offers flight deals from Montreal to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Montreal to Chicago O'Hare Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Montreal to Chicago O'Hare Intl Airport (average of C$ 215). Flying from Montreal to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.
Browse through other flights departing from Montreal. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.
Top 4 airlines flying from Montreal to O'Hare Intl
Discover the top 4 airlines that operate flights from Montreal to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 December 2025.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Montreal to O'Hare Intl?
Cheapflights helps you search for flights from Montreal to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Montreal to O'Hare Intl?
Cheapflights simply makes it quick and affordable to book flights from Montreal to O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Montreal to O'Hare Intl with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Montreal to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Montreal to O'Hare Intl become cheaper?
Not ready to book yet? You can track prices for flights from Montreal to O'Hare Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.
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