$159+ 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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
Oct 12 — Oct 191
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 September 12, 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 September 12, 2026.
This Kissandfly.com deal was found by Cheapflights users on 9/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:00 am -
1 stop16h 59m
Thu 11/58:40 am -
Nonstop4h 55m
Deal found 9/9![Lufthansa logo]()
$253
This Air Canada deal was found by Cheapflights users on 9/7. 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 10/191:00 am -
1 stop8h 12m
Tue 10/2710:15 am -
1 stop7h 39m
Deal found 9/7![Air Canada logo]()
$254
This United deal was found by Cheapflights users on 9/7. 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 10/26:00 am -
1 stop13h 22m
Sat 10/103:40 pm -
1 stop9h 07m
Deal found 9/7![Multiple Airlines logo]()
$255
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/76:00 am -
1 stop16h 59m
Sun 10/116:00 am -
1 stop16h 48m
Deal found 9/11![United Airlines logo]()
$256
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/3012:37 pm -
Nonstop3h 33m
Thu 11/58:40 am -
Nonstop4h 55m
Deal found 9/11![United Airlines logo]()
$257
This Air Canada deal was found by Cheapflights users on 9/8. 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.
Sat 10/39:20 am -
1 stop6h 15m
Tue 10/68:40 am -
Nonstop3h 48m
Deal found 9/8![Air Canada logo]()
$258
This United deal was found by Cheapflights users on 9/8. 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.
Sun 10/116:00 am -
1 stop16h 59m
Fri 10/162:15 pm -
1 stop9h 42m
Deal found 9/8![Multiple Airlines logo]()
$259
This United deal was found by Cheapflights users on 9/10. 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.
Wed 12/21:37 pm -
Nonstop2h 33m
Tue 12/81:55 pm -
1 stop11h 55m
Deal found 9/10![Multiple Airlines logo]()
$260
This Delta deal was found by Cheapflights users on 9/8. 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 10/36:35 am -
2 stops13h 21m
Tue 10/62:03 pm -
1 stop10h 07m
Deal found 9/8![Delta logo]()
$262
This Delta deal was found by Cheapflights users on 9/11. 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 10/286:35 am -
2 stops10h 25m
Fri 10/3010:12 am -
2 stops13h 58m
Deal found 9/11![Delta logo]()
$262
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/296:00 am -
1 stop13h 05m
Tue 11/38:40 am -
Nonstop4h 55m
Deal found 9/10![United Airlines logo]()
$263
This Delta deal was found by Cheapflights users on 9/9. 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 10/316:35 am -
2 stops9h 12m
Wed 11/41:27 pm -
2 stops11h 43m
Deal found 9/9![Delta logo]()
$263
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 September 12, 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 September 12, 2026.
This Delta deal was found by Cheapflights users on 9/11. 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 10/286:35 am -
2 stops13h 03m
Fri 10/302:03 pm -
1 stop10h 07m
Deal found 9/11![Delta logo]()
$262
This United deal was found by Cheapflights users on 9/11. 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 10/3012:37 pm -
Nonstop3h 33m
Thu 11/58:45 am -
1 stop10h 09m
Deal found 9/11![Multiple Airlines logo]()
$266
This United Airlines deal was found by Cheapflights users on 9/8. 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 2/241:30 pm -
Nonstop2h 20m
Mon 3/19:00 am -
Nonstop4h 54m
Deal found 9/8![United Airlines logo]()
$285
This Air Canada deal was found by Cheapflights users on 9/7. 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 10/209:20 am -
2 stops11h 01m
Wed 10/216:00 am -
1 stop6h 28m
Deal found 9/7![Air Canada logo]()
$472
This Delta deal was found by Cheapflights users on 9/8. 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 11/147:25 am -
2 stops9h 39m
Wed 11/1812:30 pm -
2 stops12h 47m
Deal found 9/8![Delta logo]()
$277
This United deal was found by Cheapflights users on 9/8. 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.
Mon 11/167:00 am -
1 stop14h 46m
Thu 11/198:45 am -
1 stop16h 21m
Deal found 9/8![Multiple Airlines logo]()
$284
This United deal was found by Cheapflights users on 9/8. 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.
Mon 11/167:00 am -
1 stop12h 05m
Fri 11/201:55 pm -
1 stop11h 11m
Deal found 9/8![Multiple Airlines logo]()
$284
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/3012:37 pm -
Nonstop3h 33m
Mon 11/28:40 am -
Nonstop4h 55m
Deal found 9/10![United Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 9/9. 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 10/276:35 am -
2 stops12h 55m
Tue 11/1012:38 pm -
2 stops12h 39m
Deal found 9/9![Delta logo]()
$336
This Delta deal was found by Cheapflights users on 9/9. 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 10/277:45 am -
2 stops13h 48m
Tue 11/1012:30 pm -
2 stops12h 47m
Deal found 9/9![Delta logo]()
$336
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/206:00 am -
1 stop13h 36m
Wed 10/216:00 am -
1 stop6h 28m
Deal found 9/11![United Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 9/7. 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 9/236:35 am -
1 stop9h 24m
Sat 9/262:05 pm -
1 stop10h 01m
Deal found 9/7![Delta logo]()
$344
This Air Canada deal was found by Cheapflights users on 9/12. 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.
Sat 9/267:40 pm -
1 stop17h 20m
Tue 9/292:40 pm -
1 stop7h 25m
Deal found 9/12![Air Canada logo]()
$512
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Tue 10/2712:25 am -
1 stop16h 22m
Fri 10/306:42 pm -
1 stop18h 23m
Deal found 9/11![Multiple Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 9/10. 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 10/306:35 am -
2 stops12h 55m
Mon 11/212:30 pm -
2 stops12h 40m
Deal found 9/10![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 9/266:00 am -
1 stop16h 44m
Tue 9/294:39 pm -
1 stop6h 09m
Deal found 9/11![United Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 9/8. 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 9/266:35 am -
1 stop9h 12m
Tue 9/296:15 am -
1 stop15h 27m
Deal found 9/8![Delta logo]()
$386
This Delta deal was found by Cheapflights users on 9/7. 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 10/2912:25 am -
1 stop10h 29m
Mon 11/212:27 pm -
2 stops12h 43m
Deal found 9/7![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 9/8. 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 10/206:35 am -
1 stop5h 57m
Wed 10/212:22 pm -
1 stop9h 48m
Deal found 9/8![Delta logo]()
$392
This Delta deal was found by Cheapflights users on 9/11. 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 10/1911:35 pm -
2 stops16h 12m
Fri 10/2312:27 pm -
2 stops11h 43m
Deal found 9/11![Delta logo]()
$392
This Delta deal was found by Cheapflights users on 9/11. 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 -
2 stops13h 48m
Thu 11/512:27 pm -
1 stop10h 13m
Deal found 9/11![Delta logo]()
$397
This Delta deal was found by Cheapflights users on 9/11. 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 10/286:35 am -
2 stops10h 25m
Fri 10/3012:27 pm -
1 stop9h 13m
Deal found 9/11![Delta logo]()
$424
Last-minute flights from Calgary to IllinoisDiscover last-minute flight deals from Calgary to Illinois. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Calgary to Illinois. Data last updated September 12, 2026 and is based on user searches.
This United deal was found by Cheapflights users on 9/7. 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 10/26:00 am -
1 stop13h 22m
Sat 10/103:40 pm -
1 stop9h 07m
Deal found 9/7![Multiple Airlines logo]()
$255
This Air Canada deal was found by Cheapflights users on 9/8. 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.
Sat 10/39:20 am -
1 stop6h 15m
Tue 10/68:40 am -
Nonstop3h 48m
Deal found 9/8![Air Canada logo]()
$258
This Delta deal was found by Cheapflights users on 9/8. 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 10/36:35 am -
2 stops13h 21m
Tue 10/62:03 pm -
1 stop10h 07m
Deal found 9/8![Delta logo]()
$262
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/76:00 am -
1 stop16h 59m
Sun 10/116:00 am -
1 stop16h 48m
Deal found 9/11![United Airlines logo]()
$256
This United deal was found by Cheapflights users on 9/8. 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.
Sun 10/116:00 am -
1 stop16h 59m
Fri 10/162:15 pm -
1 stop9h 42m
Deal found 9/8![Multiple Airlines logo]()
$259
This Air Canada deal was found by Cheapflights users on 9/7. 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 10/191:00 am -
1 stop8h 12m
Tue 10/2710:15 am -
1 stop7h 39m
Deal found 9/7![Air Canada logo]()
$254
This Delta deal was found by Cheapflights users on 9/11. 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 10/286:35 am -
2 stops10h 25m
Fri 10/3010:12 am -
2 stops13h 58m
Deal found 9/11![Delta logo]()
$262
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/296:00 am -
1 stop13h 05m
Tue 11/38:40 am -
Nonstop4h 55m
Deal found 9/10![United Airlines logo]()
$263
This Kissandfly.com deal was found by Cheapflights users on 9/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:00 am -
1 stop16h 59m
Thu 11/58:40 am -
Nonstop4h 55m
Deal found 9/9![Lufthansa logo]()
$253
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/3012:37 pm -
Nonstop3h 33m
Thu 11/58:40 am -
Nonstop4h 55m
Deal found 9/11![United Airlines logo]()
$257
This United deal was found by Cheapflights users on 9/11. 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 10/3012:37 pm -
Nonstop3h 33m
Thu 11/58:45 am -
1 stop10h 09m
Deal found 9/11![Multiple Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 9/9. 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 10/316:35 am -
2 stops9h 12m
Wed 11/41:27 pm -
2 stops11h 43m
Deal found 9/9![Delta logo]()
$263
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 September 12, 2026.
Search for one-way flight options from Calgary to Illinois. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This Delta deal was found by Cheapflights users on 9/11. 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 10/36:35 am -
2 stops10h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$159
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/76:00 am -
1 stop15h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 9/9. 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 11/148:45 am -
2 stops13h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$160
This Air Canada deal was found by Cheapflights users on 9/10. 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.
Sat 10/109:20 am -
2 stops9h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$160
This Air Canada deal was found by Cheapflights users on 9/10. 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.
Sat 10/312:50 am -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$162
This Air Canada deal was found by Cheapflights users on 9/10. 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 11/107:00 am -
2 stops11h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$163
This Orbitz deal was found by Cheapflights users on 9/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:10 am -
2 stops28h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Alaska Airlines logo]()
$164
This Delta deal was found by Cheapflights users on 9/11. 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 10/36:35 am -
2 stops12h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Tue 9/299:00 pm -
2 stops15h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$167
This Air Canada deal was found by Cheapflights users on 9/10. 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 3/81:20 am -
1 stop6h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Sun 10/1112:00 pm -
Nonstop3h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![WestJet logo]()
$171
This Delta deal was found by Cheapflights users on 9/9. 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 2/28:45 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$174
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 September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $253 (Kissandfly.com) |
One-way from | $159 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $309 |
Good round-trip deal | $306 or less |
Good one-way deal | $231 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 September 12, 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
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Sun 12/13
7:25 am-5:26 pm
2 stops10h 01m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$159
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Wed 12/9
8:45 am-5:26 pm
2 stops8h 41m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$159
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Sat 12/12
7:25 am-3:17 pm
2 stops7h 52m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$159
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Sat 10/3
6:35 am-8:30 pm
2 stops12h 55m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$165
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Sat 10/3
6:35 am-6:22 pm
2 stops10h 47m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$167
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Wed 3/10
7:15 am-7:37 pm
2 stops12h 22m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$174
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Fri 3/5
7:15 am-7:37 pm
2 stops12h 22m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$174
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Wed 2/3
8:45 am-3:50 pm
1 stop7h 05m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$174
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Wed 10/7
7:45 am-4:47 pm
1 stop8h 02m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Wed 10/7
6:35 am-6:10 pm
1 stop10h 35m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
Showing 1-10 of 48 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-STL
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-STL
YYC-MDW
What is the cheapest month to book a flight from Calgary to Illinois?
Currently, January is the cheapest month in which you can book a flight from Calgary to Illinois (average of $253). Flying from Calgary to Illinois in June is currently the most expensive (average of $368). 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 September 12, 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.
Weekly flight availability from Calgary to Illinois
Explore weekly flight availability from Calgary to Illinois. 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 September 12, 2026.
The most flights from YYC to USIL are scheduled on a Thursday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).
How much does it cost to fly round-trip from Calgary to Illinois?
Airfare is below average for this route at the moment.
Calgary to Illinois flights typically cost between $283 and $371 in October.The cheapest round-trip price found within the last 5 days was $253 on Lufthansa (Oct 30-Nov 5).
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 September 12, 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.
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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
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Complete your trip
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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 September 12, 2026.
Popular flight searches
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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 September 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$135 | Average$355 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$149 | Average$335 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$163 | Average$289 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$208 | Average$382 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$253 | Average$371 | FlexibilityNo cancel fee | On-timeN/A |