$196+ Cheap flights from Ottawa (YOW) 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.
YOW — ORD
Nov 28 — Dec 51
Round-trip
1 adult, Economy
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Find cheap flights from Ottawa to Illinois with Cheapflights
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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
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Cheapest flights from Ottawa to IllinoisExplore the most affordable flight options available from Ottawa 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 Ottawa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2026.
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:40 pm -
1 stop6h 00m
Mon 11/2312:15 pm -
1 stop4h 57m
Deal found 10/25![Porter Airlines logo]()
$367
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:15 pm -
1 stop6h 25m
Tue 11/2412:15 pm -
1 stop4h 57m
Deal found 10/28![Porter Airlines logo]()
$383
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2512:15 pm -
1 stop6h 25m
Wed 12/212:15 pm -
1 stop4h 58m
Deal found 10/28![Porter Airlines logo]()
$385
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/912:15 pm -
1 stop6h 25m
Fri 12/1112:15 pm -
1 stop4h 58m
Deal found 10/26![Porter Airlines logo]()
$393
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:15 pm -
1 stop6h 25m
Tue 12/112:15 pm -
1 stop4h 58m
Deal found 10/27![Porter Airlines logo]()
$396
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:15 pm -
2 stops17h 05m
Wed 12/166:20 pm -
1 stop16h 13m
Deal found 10/25![Multiple Airlines logo]()
$400
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:15 pm -
2 stops17h 05m
Fri 12/116:20 pm -
1 stop24h 48m
Deal found 10/25![Multiple Airlines logo]()
$401
This Kissandfly.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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:15 pm -
1 stop6h 25m
Sun 11/2912:15 pm -
1 stop4h 57m
Deal found 10/27![Porter Airlines logo]()
$404
This Kissandfly.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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2712:15 pm -
1 stop6h 25m
Sun 11/2912:15 pm -
1 stop4h 57m
Deal found 10/28![Porter Airlines logo]()
$415
This Porter 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/512:40 pm -
1 stop6h 00m
Tue 12/812:15 pm -
1 stop4h 58m
Deal found 10/28![Porter Airlines logo]()
$422
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.
Fri 12/113:15 pm -
2 stops21h 18m
Fri 12/188:35 pm -
1 stop26h 32m
Deal found 10/27![Multiple Airlines logo]()
$591
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/178:00 am -
1 stop12h 30m
Sun 12/208:35 pm -
1 stop16h 55m
Deal found 10/24![Multiple Airlines logo]()
$625
Best flights from Ottawa to IllinoisDiscover carefully curated flight deals from Ottawa 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 Ottawa 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 Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:15 pm -
1 stop6h 25m
Tue 11/2412:15 pm -
1 stop4h 57m
Deal found 10/28![Porter Airlines logo]()
$383
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/912:15 pm -
1 stop6h 25m
Wed 12/1612:15 pm -
1 stop4h 58m
Deal found 10/25![Air Transat logo]()
$426
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:15 pm -
2 stops17h 05m
Fri 12/116:20 pm -
1 stop16h 13m
Deal found 10/26![Multiple Airlines logo]()
$444
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.
Wed 12/97:00 am -
1 stop5h 57m
Wed 12/1610:57 am -
Nonstop2h 12m
Deal found 10/25![Air Canada logo]()
$693
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.
Fri 11/276:15 am -
Nonstop2h 45m
Sun 11/295:58 pm -
Nonstop2h 18m
Deal found 10/28![United Airlines logo]()
$792
This Porter 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/512:40 pm -
1 stop6h 00m
Tue 12/812:15 pm -
1 stop4h 58m
Deal found 10/28![Porter Airlines logo]()
$422
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/245:30 am -
2 stops8h 31m
Wed 1/276:40 pm -
2 stops28h 00m
Deal found 10/27![WestJet logo]()
$905
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:50 pm -
3 stops25h 54m
Tue 11/242:52 pm -
2 stops31h 27m
Deal found 10/28![Multiple Airlines logo]()
$503
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.
Sat 12/55:30 am -
2 stops13h 31m
Tue 12/86:41 pm -
2 stops27h 59m
Deal found 10/27![Delta logo]()
$1,009
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.
Wed 12/95:10 am -
1 stop4h 58m
Fri 12/1110:57 am -
Nonstop2h 12m
Deal found 10/25![Air Canada logo]()
$693
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/95:30 am -
2 stops13h 31m
Wed 12/169:37 am -
2 stops37h 03m
Deal found 10/25![WestJet logo]()
$945
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/175:30 am -
2 stops13h 31m
Wed 12/236:15 pm -
2 stops28h 25m
Deal found 10/24![WestJet logo]()
$956
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:50 pm -
2 stops15h 35m
Sun 11/298:42 pm -
1 stop19h 03m
Deal found 10/26![Multiple Airlines logo]()
$1,043
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:30 am -
2 stops13h 34m
Wed 12/29:37 am -
2 stops13h 03m
Deal found 10/28![WestJet logo]()
$957
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/215:30 am -
2 stops30h 31m
Thu 12/316:15 pm -
2 stops28h 25m
Deal found 10/27![WestJet logo]()
$972
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/185:30 am -
2 stops13h 31m
Wed 12/236:15 pm -
2 stops28h 25m
Deal found 10/24![WestJet logo]()
$986
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/175:30 am -
2 stops13h 31m
Mon 12/216:15 pm -
2 stops28h 25m
Deal found 10/24![WestJet logo]()
$1,009
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:30 am -
2 stops31h 20m
Tue 11/249:30 am -
2 stops13h 10m
Deal found 10/28![WestJet logo]()
$1,013
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:30 am -
2 stops13h 31m
Fri 12/1810:24 am -
2 stops36h 16m
Deal found 10/27![WestJet logo]()
$1,029
Last-minute flights from Ottawa to IllinoisDiscover last-minute flight deals from Ottawa to Illinois. Data last updated October 29, 2026 and is based on user searches.
Discover last-minute flight deals from Ottawa to Illinois. Data last updated October 29, 2026 and is based on user searches.
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:05 am -
1 stop9h 32m
Mon 11/27:55 am -
1 stop8h 29m
Deal found 10/25![Multiple Airlines logo]()
$485
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:30 pm -
3 stops20h 55m
Sun 11/221:16 pm -
3 stops21h 16m
Deal found 10/25![Multiple Airlines logo]()
$826
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:05 am -
1 stop9h 32m
Mon 11/97:55 am -
1 stop8h 29m
Deal found 10/26![Multiple Airlines logo]()
$497
This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:15 pm -
1 stop6h 25m
Tue 11/2412:15 pm -
1 stop4h 57m
Deal found 10/28![Porter Airlines logo]()
$383
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:15 pm -
1 stop6h 25m
Tue 11/245:26 pm -
2 stops20h 06m
Deal found 10/28![Multiple Airlines logo]()
$473
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:40 pm -
1 stop6h 00m
Mon 11/2312:15 pm -
1 stop4h 57m
Deal found 10/25![Porter Airlines logo]()
$367
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:15 pm -
1 stop6h 25m
Tue 12/112:15 pm -
1 stop4h 58m
Deal found 10/27![Porter Airlines logo]()
$396
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2512:15 pm -
1 stop6h 25m
Wed 12/212:15 pm -
1 stop4h 58m
Deal found 10/28![Porter Airlines logo]()
$385
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2512:15 pm -
1 stop6h 25m
Wed 12/23:55 pm -
2 stops21h 37m
Deal found 10/28![Multiple Airlines logo]()
$470
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:30 am -
2 stops13h 34m
Wed 12/29:37 am -
2 stops13h 03m
Deal found 10/28![WestJet logo]()
$957
This Kissandfly.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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:15 pm -
1 stop6h 25m
Sun 11/2912:15 pm -
1 stop4h 57m
Deal found 10/27![Porter Airlines logo]()
$404
This Kissandfly.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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2712:15 pm -
1 stop6h 25m
Sun 11/2912:15 pm -
1 stop4h 57m
Deal found 10/28![Porter Airlines logo]()
$415
One-way flights from Ottawa to IllinoisSearch for one-way flight options from Ottawa to Illinois. Find affordable one-way fares based on user searches. Data last updated October 29, 2026.
Search for one-way flight options from Ottawa 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 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:15 pm -
2 stops17h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$196
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/103:25 pm -
1 stop24h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$211
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.
Sat 1/3010:35 am -
2 stops26h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$213
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 11/115:30 am -
2 stops35h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$215
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.
Mon 1/45:30 am -
3 stops41h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$219
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/168:00 am -
1 stop18h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$222
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1012:15 pm -
1 stop6h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Porter Airlines logo]()
$224
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:40 pm -
1 stop30h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$227
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.
Mon 1/45:30 am -
3 stops35h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$228
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/144:35 pm -
2 stops44h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$232
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 1/295:40 pm -
3 stops19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$233
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 12/168:00 am -
2 stops15h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$241
Find flight deals from Ottawa to Illinois
Keep the following information in mind while searching for Ottawa 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 | $367 |
One-way from | $196 (Kiwi.com) |
Popular in | January |
Cheapest in | February |
Average price | $810 |
Good round-trip deal | $618 or less |
Good one-way deal | $291 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ottawa 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 Ottawa to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OttawaChicago
YOW Ottawa - ORD Chicago O'Hare Intl
YOWORD
Ottawa
Sat 1/30
10:35 am-11:50 am
2 stops26h 15m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$213
OttawaChicago
YOW Ottawa - ORD Chicago O'Hare Intl
YOWORD
Ottawa
Thu 12/10
12:15 pm-5:40 pm
1 stop6h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$224
OttawaChicago
YOW Ottawa - MDW Chicago Midway
YOWMDW
Ottawa
Thu 11/19
10:30 am-11:47 pm
2 stops14h 17m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$242
OttawaChicago
YOW Ottawa - ORD Chicago O'Hare Intl
YOWORD
Ottawa
Sat 12/5
7:00 am-1:01 pm
1 stop7h 01m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$243
OttawaChicago
YOW Ottawa - ORD Chicago O'Hare Intl
YOWORD
Ottawa
Sat 12/5
10:25 am-8:11 am
2 stops22h 46m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$247
OttawaChicago
YOW Ottawa - MDW Chicago Midway
YOWMDW
Ottawa
Tue 11/10
7:05 am-11:47 pm
2 stops17h 42m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$251
OttawaChicago
YOW Ottawa - ORD Chicago O'Hare Intl
YOWORD
Ottawa
Thu 12/10
3:15 pm-7:20 am
2 stops17h 05m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$257
OttawaChicago
YOW Ottawa - MDW Chicago Midway
YOWMDW
Ottawa
Wed 12/9
3:15 pm-4:06 pm
2 stops25h 51m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$258
OttawaChicago
YOW Ottawa - MDW Chicago Midway
YOWMDW
Ottawa
Sat 12/5
3:15 pm-4:06 pm
2 stops25h 51m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$270
OttawaChicago
YOW Ottawa - ORD Chicago O'Hare Intl
YOWORD
Ottawa
Sat 12/19
7:00 am-1:15 pm
1 stop7h 15m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$279
Showing 1-10 of 35 resultsSorted by cheapest first
Best time to book a flight from Ottawa to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Ottawa with our price prediction graph.
YOW-ORD
YOW-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 Ottawa to Illinois
YOW-USIL
YOW-ORD
YOW-MDW
What is the cheapest month to book a flight from Ottawa to Illinois?
Currently, March is the cheapest month in which you can book a flight from Ottawa to Illinois (average of $406). Flying from Ottawa to Illinois in January is currently the most expensive (average of $806). 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 YOW to IL?
Find hourly flight availability from Ottawa 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 Ottawa to Illinois as you normally would.
How much does it cost to fly round-trip from Ottawa to Illinois?
Airfare is below average for this route at the moment.
Ottawa to Illinois flights typically cost between $554 and $686 in November.The cheapest round-trip price found within the last 5 days was $367 on Porter Airlines (Nov 21-Nov 23).
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.
See what other customers who have flown with Porter Airlines,United Airlines, andAir Canada from Ottawa to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.6
Overall
8.0
Entertainment
6.9
Comfort
8.0
Boarding
8.2
Reviews
1 / 20
8.0
ExcellentD,Sep 2026
YHM - YVR
Crew
8.6
Food
7.6
Overall
8.0
Entertainment
6.9
Comfort
8.0
Boarding
8.2
Reviews
1 / 20
8.0
ExcellentD,Sep 2026
YHM - YVR
Crew
8.6
Food
7.6
Overall
8.0
Entertainment
6.9
Comfort
8.0
Boarding
8.2
Reviews
1 / 20
8.0
ExcellentD,Sep 2026
YHM - YVR
Crew
8.6
Food
7.6
Overall
8.0
Entertainment
6.9
Comfort
8.0
Boarding
8.2
Reviews
1 / 20
8.0
ExcellentD,Sep 2026
YHM - YVR
Related info for your journey
Find useful and relevant information for your journey from Ottawa 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 Ottawa to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ottawa to Illinois by cabin class
Find flights from Ottawa to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ottawa and Illinois flights
Browse other Ottawa and Illinois flight options. Last updated on October 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ottawa to Illinois flights
Consider these flights traveling from Ottawa to Illinois.
Top 2 airlines flying from Ottawa to Illinois
Discover the top 2 airlines that operate flights from Ottawa 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$521 | Average$729 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$653 | Average$912 | FlexibilityNo cancel fee | On-time67% |