Cheap flights from Calgary to Chicago O'Hare Intl Airport from C$ 135
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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
20 Mar — 27 Mar1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Calgary to Chicago O'Hare Intl are usually found in May or April, booked 43 days in advance, depart on a Friday or Thursday and return on a Wednesday
Cheap flight deals from Calgary to O'Hare Intl
Enter your travel dates to find the best prices.
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Cheapest flights from Calgary to O'Hare Intl
Explore the most affordable flight options available from Calgary to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 February 2026.
Thu 30/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Thu 7/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 250
Fri 3/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 10/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 16/2C$ 251
Wed 20/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Tue 26/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 252
Wed 8/46:00 a.m.
YYC
-
ORD
1 stop11h 54m
United Airlines
Mon 13/411:03 p.m.
ORD
-
YYC
1 stop15h 50m
United Airlines
Deal found 14/2C$ 274
Mon 4/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Fri 8/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 16/2C$ 277
Thu 30/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Mon 4/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 16/2C$ 280
Fri 3/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Mon 6/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 282
Fri 3/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 17/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 284
Tue 3/37:10 a.m.
YYC
-
ORD
1 stop7h 00m
Air Canada
Tue 10/31:55 p.m.
ORD
-
YYC
1 stop7h 44m
Air Canada
Deal found 15/2C$ 289
Tue 26/57:05 a.m.
YYC
-
ORD
1 stop8h 13m
Multiple Airlines
Fri 29/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
Multiple Airlines
Deal found 14/2C$ 297
Fri 29/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Sun 7/65:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 300
Best flights from Calgary to O'Hare Intl
Discover carefully curated flight deals from Calgary 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 February 2026.
Sat 18/46:00 a.m.
YYC
-
ORD
1 stop13h 00m
United Airlines
Tue 21/47:00 a.m.
ORD
-
YYC
1 stop15h 48m
United Airlines
Deal found 15/2C$ 274
Fri 3/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 17/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 284
Fri 10/47:40 a.m.
YYC
-
ORD
2 stops11h 09m
Delta
Thu 16/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 14/2C$ 315
Sat 18/46:40 a.m.
YYC
-
ORD
2 stops16h 19m
Delta
Wed 22/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 15/2C$ 315
Tue 7/46:30 a.m.
YYC
-
ORD
1 stop10h 37m
Delta
Thu 16/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 14/2C$ 315
Thu 9/46:30 a.m.
YYC
-
ORD
1 stop10h 32m
Delta
Wed 15/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 14/2C$ 315
Thu 9/46:30 a.m.
YYC
-
ORD
1 stop10h 32m
Delta
Tue 14/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 15/2C$ 315
Sat 11/46:30 a.m.
YYC
-
ORD
1 stop10h 23m
Delta
Thu 16/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 14/2C$ 315
Thu 9/46:30 a.m.
YYC
-
ORD
1 stop10h 32m
Delta
Thu 16/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 14/2C$ 315
Sun 12/46:30 a.m.
YYC
-
ORD
1 stop10h 32m
Delta
Tue 14/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 14/2C$ 325
Tue 24/36:30 a.m.
YYC
-
ORD
1 stop10h 30m
Delta
Wed 1/41:19 p.m.
ORD
-
YYC
1 stop10h 43m
Delta
Deal found 16/2C$ 325
Sun 12/46:30 a.m.
YYC
-
ORD
1 stop10h 32m
Delta
Thu 16/42:09 p.m.
ORD
-
YYC
1 stop9h 51m
Delta
Deal found 14/2C$ 325
Direct flights from Calgary to O'Hare Intl
Explore direct flight options from Calgary to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 February 2026.
Thu 30/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Thu 7/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 250
Fri 3/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 10/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 16/2C$ 251
Mon 4/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Fri 8/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 16/2C$ 277
Thu 30/412:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Mon 4/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 16/2C$ 280
Fri 3/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Mon 6/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 282
Fri 3/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Fri 17/42:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 15/2C$ 284
Fri 15/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Wed 20/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 14/2C$ 333
Fri 15/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Sun 17/55:30 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 14/2C$ 348
Last-minute flights from Calgary to O'Hare Intl
Discover last-minute flight deals from Calgary to O'Hare Intl. Data last updated 18 February 2026 and is based on user searches.
Tue 24/28:00 a.m.
YYC
-
ORD
1 stop8h 48m
Air Canada
Tue 3/310:00 a.m.
ORD
-
YYC
1 stop9h 54m
Air Canada
Deal found 17/2C$ 358
Tue 24/27:40 a.m.
YYC
-
ORD
2 stops12h 50m
Delta
Tue 3/312:29 p.m.
ORD
-
YYC
1 stop9h 25m
Delta
Deal found 17/2C$ 363
Tue 24/26:30 a.m.
YYC
-
ORD
2 stops13h 14m
Delta
Thu 5/31:20 p.m.
ORD
-
YYC
1 stop10h 45m
Delta
Deal found 16/2C$ 378
Tue 24/212:33 p.m.
YYC
-
ORD
Nonstop3h 32m
United Airlines
Tue 3/38:41 a.m.
ORD
-
YYC
Nonstop3h 50m
United Airlines
Deal found 17/2C$ 398
Tue 24/28:00 a.m.
YYC
-
ORD
1 stop8h 48m
Air Canada
Sun 1/33:55 p.m.
ORD
-
YYC
1 stop10h 19m
Air Canada
Deal found 16/2C$ 434
Tue 24/212:33 p.m.
YYC
-
ORD
Nonstop3h 32m
Air Canada
Wed 4/36:28 p.m.
ORD
-
YYC
1 stop8h 01m
Air Canada
Deal found 17/2C$ 439
Thu 26/25:30 a.m.
YYC
-
ORD
1 stop8h 40m
Air Canada
Mon 2/33:55 p.m.
ORD
-
YYC
1 stop9h 04m
Air Canada
Deal found 17/2C$ 377
Thu 26/25:30 a.m.
YYC
-
ORD
1 stop8h 40m
Air Canada
Sat 28/26:00 a.m.
ORD
-
YYC
1 stop15h 44m
Air Canada
Deal found 15/2C$ 412
Thu 26/28:25 a.m.
YYC
-
ORD
2 stops10h 20m
Air Canada
Wed 4/33:55 p.m.
ORD
-
YYC
1 stop10h 34m
Air Canada
Deal found 17/2C$ 428
Fri 27/29:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Mon 2/32:20 p.m.
ORD
-
YYC
Nonstop3h 55m
WestJet
Deal found 16/2C$ 353
One-way flights from Calgary to O'Hare Intl
Search for one-way flight options from Calgary to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 18 February 2026.
Mon 11/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 14/2C$ 135
Fri 29/51:40 p.m.
YYC
-
ORD
Nonstop3h 45m
American Airlines
Deal found 17/2C$ 153
Sat 16/51:40 p.m.
YYC
-
ORD
Nonstop3h 35m
American Airlines
Deal found 16/2C$ 158
Fri 17/49:00 a.m.
YYC
-
ORD
Nonstop3h 35m
WestJet
Deal found 14/2C$ 168
Sun 17/512:00 p.m.
YYC
-
ORD
Nonstop3h 40m
WestJet
Deal found 16/2C$ 169
Mon 13/46:00 a.m.
YYC
-
ORD
1 stop16h 28m
United Airlines
Deal found 14/2C$ 176
Wed 18/36:15 a.m.
YYC
-
ORD
1 stop15h 40m
United Airlines
Deal found 16/2C$ 179
Wed 4/35:35 a.m.
YYC
-
ORD
1 stop8h 35m
Air Canada
Deal found 14/2C$ 180
Fri 29/56:00 a.m.
YYC
-
ORD
1 stop16h 19m
United Airlines
Deal found 17/2C$ 181
Sun 19/48:45 p.m.
YYC
-
ORD
2 stops11h 25m
Air Canada
Deal found 17/2C$ 183
Find flight deals from Calgary to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from Calgary (YYC) 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 February 2026.
Customize your flight search to find flights from Calgary 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 February 2026.
Use the filters below to find and compare flights from Calgary to Chicago O'Hare Intl Airport that are best for you.
Fly from
Calgary
Fly to
O'Hare Intl
Route
Depart
Return
Price
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Sat 18/4
6:00 a.m.-8:00 p.m.
1 stop13h 00m
Chicago O'Hare Intl
Tue 21/4
7:00 a.m.-9:48 p.m.
1 stop15h 48m
C$ 274
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Fri 3/4
9:00 a.m.-1:35 p.m.
Nonstop3h 35m
Chicago O'Hare Intl
Fri 17/4
2:20 p.m.-5:15 p.m.
Nonstop3h 55m
C$ 284
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Fri 10/4
7:40 a.m.-7:49 p.m.
2 stops11h 09m
Chicago O'Hare Intl
Thu 16/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 315
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Sat 18/4
6:40 a.m.-11:59 p.m.
2 stops16h 19m
Chicago O'Hare Intl
Wed 22/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 315
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Tue 7/4
6:30 a.m.-6:07 p.m.
1 stop10h 37m
Chicago O'Hare Intl
Thu 16/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 315
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Thu 9/4
6:30 a.m.-6:02 p.m.
1 stop10h 32m
Chicago O'Hare Intl
Wed 15/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 315
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Thu 9/4
6:30 a.m.-6:02 p.m.
1 stop10h 32m
Chicago O'Hare Intl
Tue 14/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 315
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Sat 11/4
6:30 a.m.-5:53 p.m.
1 stop10h 23m
Chicago O'Hare Intl
Thu 16/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 315
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Thu 9/4
6:30 a.m.-6:02 p.m.
1 stop10h 32m
Chicago O'Hare Intl
Thu 16/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 315
CalgaryChicago
YYC - ORD
YYCORD
Calgary
Sun 12/4
6:30 a.m.-6:02 p.m.
1 stop10h 32m
Chicago O'Hare Intl
Tue 14/4
2:09 p.m.-11:00 p.m.
1 stop9h 51m
C$ 325
Flights are sorted by cheapest round-trip flights first.
Deals found on 15/2
Showing 1-10 of 22 results
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2
3
Best time to book a flight from Calgary to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Calgary with our price prediction graph.
YYC-ORD
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 Calgary to Chicago O'Hare Intl Airport
Prices
Airlines
More
How far ahead should I book a flight from Calgary to Chicago O'Hare Intl Airport?
Use this chart to determine the optimal time to book a round-trip flight from Calgary to O'Hare Intl. Price data was last updated on 13 February 2026.
The best time to book flights from Calgary to Chicago O'Hare Intl Airport is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Calgary to Chicago O'Hare Intl Airport?
Currently, May is the cheapest month in which you can book a flight from Calgary to Chicago O'Hare Intl Airport (average of C$ 142). Flying from Calgary to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 220). 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 YYC to ORD?
Find hourly flight availability from Calgary 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 February 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Calgary to Chicago O'Hare Intl Airport as you normally would.
How much does it cost to fly round-trip from Calgary to Chicago O'Hare Intl Airport?
Weekly flight availability from Calgary to Chicago O'Hare Intl Airport
Explore weekly flight availability from Calgary 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 February 2026.
The most flights from YYC to ORD are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).
What’s the top layover airport for flights from Calgary to Chicago O'Hare Intl Airport?
Share of one-stop round-trip flights from Calgary to Chicago O'Hare Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Toronto (YYZ) – chosen by Cheapflights users on 59% of one-stop itineraries from Calgary to Chicago O'Hare Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from Calgary to Chicago O'Hare Intl Airport?
Average round-trip fare for 1-stop flights from Calgary to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Ottawa (YOW) is the most affordable 1-stop option, with an average round-trip price of C$ 253.
What’s the fastest layover option from Calgary to Chicago O'Hare Intl Airport?
Shortest average travel time for 1-stop one-way flights from Calgary to Chicago O'Hare Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 7h 22m.
Which airport typically offers the quickest layover for flights from Calgary to Chicago O'Hare Intl Airport?
Average layover duration for 1-stop one-way flights from Calgary to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 2h 01m.
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 February 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Calgary 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.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Related info for your journey
Find useful and relevant information for your journey from Calgary 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.
What airport do you fly from for flights from Calgary to Chicago O'Hare Intl?
For a flight from Calgary to Chicago O'Hare Intl, you will be flying from Calgary. Calgary (YYC) is just 9.3 km from the centre of the city. Calgary is the only Calgary airport and it handles 5 outbound flights to Chicago O'Hare Intl per day. 5 airlines have flights to Chicago O'Hare Intl from Calgary on a regular basis.
How long is the flight from Calgary to Chicago O'Hare Intl Airport?
A quick flight from Calgary to Chicago O'Hare Intl Airport can take about 3h 35m. United Airlines provides one of the quickest options available for as low as C$ 284. Airlines will cover a distance of 2223 km. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Calgary to Chicago O'Hare Intl Airport round-trip?
Cheapflights users have booked flights from Calgary to Chicago O'Hare Intl Airport round-trip from C$ 121. Other airlines that can offer you cheap pricing are Delta, from C$ 146, and United Airlines, from C$ 166. You may be able to fly from Calgary to Chicago O'Hare Intl Airport for 66% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Calgary to Chicago O'Hare Intl Airport one-way?
To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 134. Air Canada flights start at C$ 154 while deals on United Airlines start at C$ 161 one-way.
What are the most reliable airlines from Calgary to Chicago O'Hare Intl Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Calgary to Chicago O'Hare Intl Airport on time: Scandinavian Airlines (90%), American Airlines (84%), Envoy Air (84%).
What are the cheapest flights from Calgary to Chicago O'Hare Intl Airport?
Looking for the cheapest flight from Calgary to Chicago O'Hare Intl Airport? While on average our users pay C$ 1,690, our data indicates the cheapest price to be C$ 141. The most popular route (Calgary - Chicago O'Hare Intl), is priced around C$ 329.
Can I find deals for business class flights from Calgary to O'Hare Intl?
Yes. Cheapflights offers flight deals from Calgary 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 Calgary to Chicago O'Hare Intl Airport?
Currently, May is the cheapest month in which you can book a flight from Calgary to Chicago O'Hare Intl Airport (average of C$ 142). Flying from Calgary to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 220). 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 February 2026.
Browse through other flights departing from Calgary. Flights are based on user searches made on Cheapflights and were last updated on 18 February 2026.
Discover the top 5 airlines that operate flights from Calgary 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 February 2026.
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 Calgary to O'Hare Intl?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to O'Hare Intl from Calgary today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Calgary to O'Hare Intl?
Cheapflights simply makes it quick and affordable to book flights from Calgary 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 Calgary to O'Hare Intl with no change fees?
Yes, we can. To see specific flights from Calgary to O'Hare Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Calgary to O'Hare Intl become cheaper?
Of course! You can now track prices for flights from Calgary to O'Hare Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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