$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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — ORD
Oct 6 — Oct 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
Best
Last-minute
One-way
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 6, 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 6, 2026.
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/306:00 am -
1 stop11h 38m
Mon 11/210:55 am -
1 stop12h 58m
Deal found 9/5![United Airlines logo]()
$253
This United Airlines deal was found by Cheapflights users on 9/2. 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 11/251:37 pm -
Nonstop2h 33m
Sat 11/288:40 am -
Nonstop4h 55m
Deal found 9/2![United Airlines logo]()
$254
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/1612:33 pm -
Nonstop3h 32m
Thu 10/156:00 am -
1 stop16h 48m
Deal found 9/1![United Airlines logo]()
$255
This Justfly.com deal was found by Cheapflights users on 9/4. 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.
Thu 10/1512:00 pm -
Nonstop3h 40m
Fri 10/235:30 pm -
Nonstop3h 55m
Deal found 9/4![WestJet logo]()
$256
This Air Canada deal was found by Cheapflights users on 9/1. 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 10/101:00 am -
1 stop8h 17m
Fri 10/163:45 pm -
1 stop8h 12m
Deal found 9/1![Air Canada logo]()
$258
This Super.com deal was found by Cheapflights users on 9/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:00 pm -
Nonstop3h 40m
Fri 10/165:30 pm -
Nonstop3h 55m
Deal found 9/1![WestJet logo]()
$259
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/126:00 am -
1 stop13h 22m
Thu 10/158:40 am -
Nonstop3h 48m
Deal found 9/1![United Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/106:00 am -
1 stop12h 30m
Fri 11/138:40 am -
Nonstop4h 55m
Deal found 9/4![United Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 9/1. 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 9/157:45 am -
1 stop9h 19m
Sat 10/176:20 am -
1 stop7h 15m
Deal found 9/1![Delta logo]()
$262
This Air Canada deal was found by Cheapflights users on 9/2. 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 10/2412:55 am -
1 stop7h 28m
Wed 10/284:30 pm -
1 stop7h 36m
Deal found 9/2![Air Canada logo]()
$263
This United deal was found by Cheapflights users on 9/2. 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 stop14h 18m
Mon 10/52:15 pm -
1 stop9h 42m
Deal found 9/2![Multiple Airlines logo]()
$264
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/1112:33 pm -
Nonstop3h 32m
Mon 9/145:55 am -
1 stop8h 58m
Deal found 9/1![United Airlines logo]()
$265
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 6, 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 6, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/216:00 am -
1 stop14h 52m
Fri 10/308:40 am -
Nonstop3h 55m
Deal found 9/2![United Airlines logo]()
$260
This Delta deal was found by Cheapflights users on 9/5. 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 9/5![Delta logo]()
$268
This United deal was found by Cheapflights users on 9/2. 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 9/186:00 am -
1 stop15h 45m
Mon 9/213:40 pm -
1 stop9h 07m
Deal found 9/2![Multiple Airlines logo]()
$296
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 10/31:51 pm -
1 stop9h 36m
Sat 10/105:23 pm -
1 stop20h 28m
Deal found 9/2![American Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 9/5. 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 10/3012:33 pm -
1 stop8h 32m
Mon 11/212:30 pm -
2 stops12h 40m
Deal found 9/5![Delta logo]()
$268
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/16:00 am -
1 stop14h 52m
Mon 10/56:00 am -
1 stop16h 48m
Deal found 9/5![United Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 9/4. 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 9/196:35 am -
1 stop9h 24m
Wed 10/212:03 pm -
1 stop10h 07m
Deal found 9/4![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/3![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 9/1. 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 24m
Tue 9/298:25 am -
1 stop5h 35m
Deal found 9/1![Delta logo]()
$286
This United Airlines deal was found by Cheapflights users on 9/1. 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 11/143:06 pm -
1 stop5h 24m
Sun 11/228:40 am -
Nonstop4h 55m
Deal found 9/1![United Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 9/4. 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.
Thu 10/112:20 am -
1 stop11h 50m
Fri 10/96:35 pm -
2 stops21h 40m
Deal found 9/4![Multiple Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 9/2. 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 stops9h 15m
Mon 11/212:27 pm -
1 stop10h 13m
Deal found 9/2![Delta logo]()
$304
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Tue 9/297:00 am -
1 stop12h 44m
Tue 10/67:29 am -
1 stop6h 22m
Deal found 9/1![American Airlines logo]()
$411
This American Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 9/241:51 pm -
1 stop9h 36m
Mon 9/285:43 am -
1 stop7h 11m
Deal found 9/2![American Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 9/5. 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 9/5![United Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 9/4. 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 9/175:50 pm -
2 stops13h 58m
Tue 10/2010:12 am -
2 stops13h 58m
Deal found 9/4![Delta logo]()
$362
This Delta deal was found by Cheapflights users on 9/3. 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 10/1711:00 am -
1 stop6h 00m
Sat 10/2412:27 pm -
2 stops11h 45m
Deal found 9/3![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 9/5. 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 10/235:50 pm -
2 stops13h 54m
Mon 11/2310:34 am -
2 stops14h 43m
Deal found 9/5![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 9/2. 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 9/2![Delta logo]()
$388
This Delta deal was found by Cheapflights users on 9/4. 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 9/165:50 pm -
2 stops13h 58m
Tue 10/201:27 pm -
1 stop7h 38m
Deal found 9/4![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 9/4. 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 9/175:50 pm -
2 stops13h 58m
Mon 10/191:27 pm -
1 stop7h 48m
Deal found 9/4![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 9/4. 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 9/185:50 pm -
2 stops13h 58m
Wed 10/211:27 pm -
1 stop7h 48m
Deal found 9/4![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 9/4. 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 9/175:50 pm -
2 stops13h 58m
Wed 10/211:27 pm -
1 stop7h 48m
Deal found 9/4![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 9/3. 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 9/2911:21 am -
1 stop10h 21m
Deal found 9/3![Delta logo]()
$399
Last-minute flights from Calgary to IllinoisDiscover last-minute flight deals from Calgary to Illinois. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from Calgary to Illinois. Data last updated September 6, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/1112:33 pm -
Nonstop3h 32m
Mon 9/145:55 am -
1 stop8h 58m
Deal found 9/1![United Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/126:00 am -
1 stop13h 22m
Thu 10/158:40 am -
Nonstop3h 48m
Deal found 9/1![United Airlines logo]()
$260
This Super.com deal was found by Cheapflights users on 9/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:00 pm -
Nonstop3h 40m
Fri 10/165:30 pm -
Nonstop3h 55m
Deal found 9/1![WestJet logo]()
$259
This Delta deal was found by Cheapflights users on 9/1. 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 9/157:45 am -
1 stop9h 19m
Sat 10/176:20 am -
1 stop7h 15m
Deal found 9/1![Delta logo]()
$262
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Tue 9/157:00 am -
Nonstop3h 29m
Fri 10/162:50 pm -
1 stop7h 54m
Deal found 9/1![American Airlines logo]()
$266
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/1612:33 pm -
Nonstop3h 32m
Tue 10/136:00 am -
1 stop16h 48m
Deal found 9/1![United Airlines logo]()
$255
This United deal was found by Cheapflights users on 9/2. 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 stop14h 18m
Mon 10/52:15 pm -
1 stop9h 42m
Deal found 9/2![Multiple Airlines logo]()
$264
This Air Canada deal was found by Cheapflights users on 9/1. 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 10/101:00 am -
1 stop8h 17m
Fri 10/163:45 pm -
1 stop8h 12m
Deal found 9/1![Air Canada logo]()
$258
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/106:00 am -
1 stop12h 30m
Fri 11/138:40 am -
Nonstop4h 55m
Deal found 9/4![United Airlines logo]()
$261
This Justfly.com deal was found by Cheapflights users on 9/4. 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.
Thu 10/1512:00 pm -
Nonstop3h 40m
Fri 10/235:30 pm -
Nonstop3h 55m
Deal found 9/4![WestJet logo]()
$256
This Air Canada deal was found by Cheapflights users on 9/2. 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 10/2412:55 am -
1 stop7h 28m
Wed 10/284:30 pm -
1 stop7h 36m
Deal found 9/2![Air Canada logo]()
$263
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/306:00 am -
1 stop11h 38m
Mon 11/210:55 am -
1 stop12h 58m
Deal found 9/5![United Airlines logo]()
$253
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 6, 2026.
Search for one-way flight options from Calgary to Illinois. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 2/111:30 pm -
Nonstop2h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$165
This Air Canada deal was found by Cheapflights users on 9/4. 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 10/168:30 pm -
2 stops11h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Air Canada logo]()
$166
This Air Canada deal was found by Cheapflights users on 9/2. 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 9/2811:55 pm -
1 stop8h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Air Canada logo]()
$167
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/196:00 am -
1 stop12h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$169
This Delta deal was found by Cheapflights users on 9/2. 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 9/296:35 am -
1 stop9h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$169
This Delta deal was found by Cheapflights users on 9/1. 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 3/28:45 am -
2 stops8h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Delta logo]()
$170
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/186:00 am -
1 stop15h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$173
This Delta deal was found by Cheapflights users on 9/3. 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 2/118:45 am -
2 stops8h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$174
This United Airlines deal was found by Cheapflights users on 9/2. 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 2/93:06 pm -
1 stop5h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 10/612:20 am -
1 stop11h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$175
This United Airlines deal was found by Cheapflights users on 9/5. 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 9/126:00 am -
1 stop14h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$175
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 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $253 (United Airlines) |
One-way from | $165 (American Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $307 |
Good round-trip deal | $306 or less |
Good one-way deal | $265 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 6, 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
Thu 10/1
6:35 am-6:26 pm
2 stops10h 51m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$171
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Sat 10/31
12:37 pm-5:10 pm
Nonstop3h 33m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$171
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Fri 10/2
6:00 am-11:59 pm
1 stop16h 59m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$173
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Thu 10/1
6:00 am-9:18 pm
1 stop14h 18m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$173
CalgaryChicago
YYC Calgary - MDW Chicago Midway
YYCMDW
Calgary
Thu 2/11
8:45 am-5:37 pm
2 stops8h 52m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$174
CalgaryChicago
YYC Calgary - ORD Chicago O'Hare Intl
YYCORD
Calgary
Tue 2/9
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
Tue 2/9
3:06 pm-8:31 pm
1 stop5h 25m
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
Wed 3/3
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
Thu 2/11
7:15 am-4:57 pm
1 stop9h 42m
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
Thu 3/4
7:15 am-7:37 pm
2 stops12h 22m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$178
Showing 1-10 of 53 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 $239). Flying from Calgary to Illinois in June is currently the most expensive (average of $362). 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 6, 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 6, 2026.
The most flights from YYC to USIL are scheduled on a Thursday (16 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 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 $277 and $371 in October.The cheapest round-trip price found within the last 5 days was $253 on United Airlines (Oct 30-Nov 2).
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 6, 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.
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - ATL
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentJorge,Aug 2026
TPA - 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
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 September 6, 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 September 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$135 | Average$385 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$149 | Average$335 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$163 | Average$288 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$208 | Average$392 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$253 | Average$371 | FlexibilityNo cancel fee | On-timeN/A |