$165+ Cheap flights from Calgary (YYC) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
Nov 28 — Dec 51
Round-trip
1 adult, Economy
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Find cheap flights from Calgary to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Calgary to Illinois
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Cheapest flights from Calgary to IllinoisExplore the most affordable flight options available from Calgary to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2026.
Explore the most affordable flight options available from Calgary to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/19:07 am -
1 stop8h 42m
Wed 12/93:19 pm -
1 stop30h 18m
Deal found 10/27![Alaska Airlines logo]()
$302
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:45 am -
1 stop9h 22m
Fri 11/273:40 pm -
1 stop9h 10m
Deal found 10/24![Air Canada logo]()
$304
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:45 am -
1 stop9h 22m
Tue 12/154:30 pm -
1 stop7h 36m
Deal found 10/24![Air Canada logo]()
$309
This Alaska Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:09 am -
2 stops28h 00m
Wed 11/189:30 am -
1 stop12h 09m
Deal found 10/28![Alaska Airlines logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:07 am -
1 stop7h 24m
Mon 12/76:47 pm -
1 stop26h 50m
Deal found 10/27![Alaska Airlines logo]()
$314
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:45 am -
1 stop9h 22m
Mon 11/233:50 pm -
1 stop9h 00m
Deal found 10/24![Air Canada logo]()
$315
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/101:37 pm -
Nonstop3h 33m
Thu 12/178:40 am -
1 stop10h 17m
Deal found 10/27![United Airlines logo]()
$318
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:20 am -
1 stop8h 03m
Sat 11/283:40 pm -
1 stop9h 10m
Deal found 10/24![Air Canada logo]()
$320
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:51 pm -
Nonstop3h 45m
Sat 10/3110:00 am -
Nonstop3h 51m
Deal found 10/25![American Airlines logo]()
$321
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:07 am -
2 stops28h 03m
Tue 12/85:29 pm -
1 stop28h 08m
Deal found 10/27![Alaska Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/41:37 pm -
Nonstop3h 33m
Tue 12/812:29 pm -
1 stop10h 24m
Deal found 10/27![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:37 pm -
Nonstop3h 33m
Tue 12/18:40 am -
Nonstop3h 55m
Deal found 10/26![United Airlines logo]()
$330
Best flights from Calgary to IllinoisDiscover carefully curated flight deals from Calgary to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 29, 2026.
Discover carefully curated flight deals from Calgary to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 29, 2026.
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/217:15 am -
2 stops9h 38m
Sun 1/2410:51 am -
2 stops11h 10m
Deal found 10/28![Delta logo]()
$318
This Alaska Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:07 am -
2 stops28h 03m
Mon 12/76:00 am -
1 stop15h 37m
Deal found 10/25![Alaska Airlines logo]()
$340
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/241:39 pm -
Nonstop3h 31m
Mon 3/13:51 pm -
1 stop7h 02m
Deal found 10/27![United Airlines logo]()
$350
This United deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:37 pm -
Nonstop3h 33m
Mon 11/304:30 pm -
1 stop7h 36m
Deal found 10/28![Multiple Airlines logo]()
$352
This United deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/41:37 pm -
Nonstop3h 33m
Mon 12/73:45 pm -
1 stop9h 05m
Deal found 10/25![Multiple Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:25 am -
1 stop10h 41m
Tue 12/1512:34 pm -
2 stops11h 47m
Deal found 10/24![Delta logo]()
$362
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/111:39 pm -
Nonstop3h 31m
Mon 2/227:00 am -
1 stop12h 37m
Deal found 10/26![United Airlines logo]()
$366
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:45 am -
1 stop8h 05m
Wed 12/912:39 pm -
2 stops11h 42m
Deal found 10/27![Delta logo]()
$366
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:06 pm -
1 stop7h 40m
Wed 12/28:40 am -
Nonstop3h 55m
Deal found 10/28![United Airlines logo]()
$385
This United deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/111:39 pm -
Nonstop3h 31m
Fri 2/1910:05 am -
1 stop11h 24m
Deal found 10/26![Multiple Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:25 am -
2 stops10h 39m
Sat 11/2810:34 am -
2 stops13h 43m
Deal found 10/24![Delta logo]()
$381
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/138:45 am -
1 stop8h 05m
Sun 12/2011:47 am -
1 stop10h 24m
Deal found 10/28![Delta logo]()
$404
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/258:45 am -
2 stops11h 33m
Wed 12/3012:33 pm -
1 stop9h 38m
Deal found 10/28![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:45 am -
1 stop6h 08m
Sat 12/1912:33 pm -
1 stop9h 38m
Deal found 10/28![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/258:45 am -
2 stops8h 59m
Wed 12/3011:47 am -
1 stop10h 24m
Deal found 10/28![Delta logo]()
$445
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/208:45 am -
1 stop8h 08m
Sun 1/2412:44 pm -
1 stop9h 17m
Deal found 10/25![Delta logo]()
$445
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:45 am -
1 stop7h 54m
Mon 11/3012:30 pm -
1 stop9h 28m
Deal found 10/26![Delta logo]()
$460
Last-minute flights from Calgary to IllinoisDiscover last-minute flight deals from Calgary to Illinois. Data last updated October 29, 2026 and is based on user searches.
Discover last-minute flight deals from Calgary to Illinois. Data last updated October 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:51 pm -
Nonstop3h 45m
Sat 10/3110:00 am -
Nonstop3h 51m
Deal found 10/25![American Airlines logo]()
$321
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:37 pm -
Nonstop3h 33m
Tue 11/38:40 am -
Nonstop3h 55m
Deal found 10/25![United Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:45 am -
1 stop8h 02m
Mon 11/210:12 am -
2 stops13h 58m
Deal found 10/27![Delta logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:09 am -
2 stops28h 00m
Wed 11/189:30 am -
1 stop12h 09m
Deal found 10/28![Alaska Airlines logo]()
$311
This Justfly.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:20 pm -
1 stop7h 13m
Wed 11/186:23 am -
1 stop6h 52m
Deal found 10/27![WestJet logo]()
$333
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:45 am -
1 stop9h 22m
Mon 11/233:50 pm -
1 stop9h 00m
Deal found 10/24![Air Canada logo]()
$315
This Air Canada deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:20 am -
1 stop8h 03m
Mon 11/304:30 pm -
1 stop7h 36m
Deal found 10/26![Air Canada logo]()
$336
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:20 am -
1 stop8h 03m
Sat 11/283:40 pm -
1 stop9h 10m
Deal found 10/24![Air Canada logo]()
$320
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:45 am -
1 stop7h 54m
Sat 11/2810:34 am -
2 stops13h 43m
Deal found 10/24![Delta logo]()
$381
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:45 am -
1 stop9h 22m
Fri 11/273:40 pm -
1 stop9h 10m
Deal found 10/24![Air Canada logo]()
$304
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:37 pm -
Nonstop3h 33m
Tue 12/18:40 am -
Nonstop3h 55m
Deal found 10/26![United Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:25 am -
2 stops8h 53m
Tue 12/12:04 pm -
1 stop10h 17m
Deal found 10/28![Delta logo]()
$335
One-way flights from Calgary to IllinoisSearch for one-way flight options from Calgary to Illinois. Find affordable one-way fares based on user searches. Data last updated October 29, 2026.
Search for one-way flight options from Calgary to Illinois. Find affordable one-way fares based on user searches. Data last updated October 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/98:00 pm -
1 stop14h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$165
This Trip.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/132:55 pm -
1 stop19h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/129:50 am -
2 stops15h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$178
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/259:03 am -
1 stop8h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Alaska Airlines logo]()
$179
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:37 pm -
Nonstop3h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$180
This Air Canada deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/41:45 am -
1 stop9h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Air Canada logo]()
$183
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/129:07 am -
1 stop10h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Alaska Airlines logo]()
$185
This Booking.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/221:45 am -
1 stop9h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Air Canada logo]()
$186
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/147:15 am -
2 stops13h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Delta logo]()
$187
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/138:45 am -
1 stop8h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Delta logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/157:30 am -
2 stops40h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$188
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/108:45 am -
1 stop8h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Delta logo]()
$196
Find flight deals from Calgary to Illinois
Keep the following information in mind while searching for Calgary to Illinois flight deals. Data was last updated October 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $302 (Alaska Airlines) |
One-way from | $162 (Kiwi.com) |
Popular in | November |
Cheapest in | April |
Average price | $339 |
Good round-trip deal | $389 or less |
Good one-way deal | $289 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Calgary to Illinois 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 7,457,451 searches. Data last updated October 29, 2026.
Use the filters below to find and compare flights from Calgary to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Mon 11/23
1:37 pm-5:10 pm
Nonstop3h 33m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Thu 1/14
8:45 am-10:17 pm
2 stops13h 32m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$187
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Wed 1/13
7:15 am-8:32 pm
2 stops13h 17m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$187
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Fri 1/8
7:15 am-6:09 pm
1 stop10h 54m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$187
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Fri 12/4
9:07 am-5:49 pm
1 stop8h 42m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$193
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Wed 12/9
7:25 am-6:01 pm
2 stops10h 36m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Sat 12/12
8:45 am-10:54 pm
2 stops14h 09m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Thu 12/10
8:45 am-6:01 pm
2 stops9h 16m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Mon 11/23
8:45 am-4:39 pm
1 stop7h 54m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Fri 12/25
8:45 am-5:44 pm
2 stops8h 59m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$196
Showing 1-10 of 36 resultsSorted by cheapest first
Best time to book a flight from Calgary to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Calgary with our price prediction graph.
YYC-ORD
YYC-MDW
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 Illinois
YYC-USIL
YYC-ORD
YYC-MDW
What is the cheapest month to book a flight from Calgary to Illinois?
Currently, May is the cheapest month in which you can book a flight from Calgary to Illinois (average of $260). Flying from Calgary to Illinois in June is currently the most expensive (average of $378). 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 IL?
Find hourly flight availability from Calgary to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Calgary to Illinois as you normally would.
How much does it cost to fly round-trip from Calgary to Illinois?
Airfare is typical for this route at the moment.
Calgary to Illinois flights typically cost between $268 and $500 in December.The cheapest round-trip price found within the last 5 days was $302 on Alaska Airlines (Dec 1-Dec 9).
How far ahead should I book a flight from Calgary to Illinois?
The price you pay for your flight from Calgary to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 59 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated October 29, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andWestJet from Calgary to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from Calgary to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Calgary to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Calgary to Illinois by cabin class
Find flights from Calgary to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Calgary and Illinois flights
Browse other Calgary and Illinois flight options. Last updated on October 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Calgary to Illinois flights
Consider these flights traveling from Calgary to Illinois.
Top 5 airlines flying from Calgary to Illinois
Discover the top 5 airlines that operate flights from Calgary to Illinois. 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 7,457,451 searches. Data last updated October 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$135 | Average$339 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$149 | Average$366 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$163 | Average$289 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$244 | Average$400 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$253 | Average$318 | FlexibilityNo cancel fee | On-timeN/A |