$369+ Cheap flights from Ireland to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
Sep 9 — Sep 161
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ireland 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 Ireland to Illinois
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ireland to IllinoisExplore the most affordable flight options available from Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
Explore the most affordable flight options available from Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
This Gotogate deal was found by Cheapflights users on 8/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:50 am -
1 stop11h 55m
Fri 11/135:10 pm -
1 stop16h 35m
Deal found 8/5![Multiple Airlines logo]()
$542
This Gotogate deal was found by Cheapflights users on 8/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:30 am -
1 stop16h 45m
Wed 10/215:00 pm -
1 stop17h 10m
Deal found 8/8![Multiple Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 8/5. 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.
Thu 11/125:40 am -
1 stop14h 45m
Sun 11/152:44 pm -
2 stops18h 01m
Deal found 8/5![Delta logo]()
$552
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am -
1 stop14h 00m
Mon 9/75:10 pm -
1 stop15h 30m
Deal found 8/6![KLM logo]()
$553
This Delta deal was found by Cheapflights users on 8/9. 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.
Thu 9/36:15 am -
1 stop14h 00m
Mon 9/73:20 pm -
2 stops17h 20m
Deal found 8/9![Delta logo]()
$554
This lastminute.com deal was found by Cheapflights users on 8/9. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:15 pm -
1 stop21h 15m
Sun 9/610:30 pm -
1 stop11h 40m
Deal found 8/9![Multiple Airlines logo]()
$555
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:05 pm -
1 stop14h 47m
Wed 9/96:00 am -
1 stop23h 10m
Deal found 8/6![KLM logo]()
$556
This Delta deal was found by Cheapflights users on 8/7. 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.
Fri 10/236:15 am -
1 stop14h 00m
Mon 10/2610:30 am -
2 stops19h 10m
Deal found 8/7![Delta logo]()
$557
This Delta deal was found by Cheapflights users on 8/7. 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.
Mon 9/2110:50 am -
2 stops17h 54m
Mon 9/281:19 pm -
2 stops19h 21m
Deal found 8/7![Delta logo]()
$560
This Air France deal was found by Cheapflights users on 8/5. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:50 am -
2 stops15h 40m
Sun 10/115:10 pm -
1 stop15h 30m
Deal found 8/5![Multiple Airlines logo]()
$562
This Delta deal was found by Cheapflights users on 8/9. 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.
Wed 9/2310:50 am -
2 stops17h 42m
Wed 9/301:29 pm -
2 stops14h 46m
Deal found 8/9![Delta logo]()
$563
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am -
2 stops17h 46m
Mon 9/71:19 pm -
2 stops15h 01m
Deal found 8/6![KLM logo]()
$563
Best flights from Ireland to IllinoisDiscover carefully curated flight deals from Ireland to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
Discover carefully curated flight deals from Ireland to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
This Air France deal was found by Cheapflights users on 8/5. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:40 am -
1 stop14h 45m
Sun 11/156:25 pm -
1 stop14h 20m
Deal found 8/5![Multiple Airlines logo]()
$552
This Delta deal was found by Cheapflights users on 8/5. 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.
Thu 11/125:40 am -
1 stop14h 45m
Sun 11/152:44 pm -
2 stops18h 01m
Deal found 8/5![Delta logo]()
$552
This KLM deal was found by Cheapflights users on 8/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:15 am -
1 stop14h 15m
Wed 9/304:50 pm -
1 stop11h 25m
Deal found 8/9![KLM logo]()
$557
This Scandinavian Airlines deal was found by Cheapflights users on 8/5. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:50 pm -
2 stops26h 20m
Mon 9/147:15 pm -
2 stops32h 55m
Deal found 8/5![Scandinavian Airlines logo]()
$618
This Icelandair deal was found by Cheapflights users on 8/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2711:30 am -
1 stop11h 50m
Mon 1/116:30 pm -
1 stop9h 45m
Deal found 8/10![Icelandair logo]()
$627
This British Airways deal was found by Cheapflights users on 8/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:50 am -
1 stop11h 55m
Fri 11/134:30 pm -
2 stops17h 15m
Deal found 8/5![British Airways logo]()
$709
This United Airlines deal was found by Cheapflights users on 8/7. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:40 am -
Nonstop8h 40m
Sun 12/66:30 pm -
Nonstop7h 40m
Deal found 8/7![United Airlines logo]()
$732
This SmartFares deal was found by Cheapflights users on 8/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:30 am -
Nonstop8h 20m
Mon 8/316:05 pm -
Nonstop7h 25m
Deal found 8/10![Lufthansa logo]()
$783
This Air France deal was found by Cheapflights users on 8/5. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:00 pm -
1 stop12h 01m
Sat 9/59:59 am -
1 stop15h 56m
Deal found 8/5![Air France logo]()
$798
This lol.travel deal was found by Cheapflights users on 8/8. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:30 am -
1 stop20h 44m
Wed 9/912:46 pm -
1 stop14h 59m
Deal found 8/8![Finnair logo]()
$1,060
This Iberia deal was found by Cheapflights users on 8/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:30 am -
1 stop18h 13m
Mon 9/2810:14 am -
1 stop17h 31m
Deal found 8/7![Iberia logo]()
$1,074
This Delta deal was found by Cheapflights users on 8/7. 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.
Fri 10/236:15 am -
1 stop14h 00m
Mon 10/2610:30 am -
2 stops19h 10m
Deal found 8/7![Delta logo]()
$557
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:50 am -
2 stops16h 57m
Mon 9/75:10 pm -
1 stop15h 30m
Deal found 8/6![KLM logo]()
$558
This Delta deal was found by Cheapflights users on 8/9. 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.
Wed 9/236:15 am -
1 stop14h 15m
Wed 9/301:29 pm -
2 stops14h 46m
Deal found 8/9![Delta logo]()
$558
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am -
2 stops17h 46m
Mon 9/71:19 pm -
2 stops15h 01m
Deal found 8/6![KLM logo]()
$563
This KLM deal was found by Cheapflights users on 8/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:55 am -
1 stop12h 52m
Sat 11/141:22 pm -
2 stops12h 23m
Deal found 8/9![Multiple Airlines logo]()
$660
This Delta deal was found by Cheapflights users on 8/7. 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.
Mon 9/2110:50 am -
2 stops17h 54m
Mon 9/281:19 pm -
2 stops19h 21m
Deal found 8/7![Delta logo]()
$560
This Scandinavian Airlines deal was found by Cheapflights users on 8/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:40 am -
2 stops34h 30m
Mon 9/147:15 pm -
2 stops32h 55m
Deal found 8/10![Scandinavian Airlines logo]()
$692
This British Airways deal was found by Cheapflights users on 8/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:40 am -
1 stop17h 35m
Sun 12/69:50 pm -
1 stop11h 35m
Deal found 8/6![British Airways logo]()
$711
This United Airlines deal was found by Cheapflights users on 8/7. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:30 pm -
1 stop15h 58m
Sat 9/269:25 pm -
2 stops30h 50m
Deal found 8/7![United Airlines logo]()
$744
This Delta deal was found by Cheapflights users on 8/9. 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.
Wed 9/236:15 am -
2 stops18h 18m
Wed 9/309:59 am -
2 stops18h 16m
Deal found 8/9![Delta logo]()
$563
This KLM deal was found by Cheapflights users on 8/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:05 pm -
2 stops33h 12m
Sun 9/131:29 pm -
1 stop15h 41m
Deal found 8/9![Multiple Airlines logo]()
$685
This British Airways deal was found by Cheapflights users on 8/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:30 am -
1 stop15h 45m
Mon 8/3112:40 pm -
2 stops21h 30m
Deal found 8/5![British Airways logo]()
$713
This Lufthansa deal was found by Cheapflights users on 8/7. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:30 am -
Nonstop8h 20m
Sat 9/196:05 pm -
Nonstop7h 25m
Deal found 8/7![Lufthansa logo]()
$785
This Scandinavian Airlines deal was found by Cheapflights users on 8/6. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/286:35 pm -
2 stops28h 10m
Sat 1/27:15 pm -
2 stops34h 35m
Deal found 8/6![Scandinavian Airlines logo]()
$756
This Delta deal was found by Cheapflights users on 8/9. 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.
Thu 9/31:05 pm -
1 stop29h 12m
Sun 9/136:00 am -
1 stop23h 10m
Deal found 8/9![Delta logo]()
$572
This SmartFares deal was found by Cheapflights users on 8/8. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:30 am -
Nonstop8h 20m
Mon 9/76:05 pm -
Nonstop7h 25m
Deal found 8/8![Lufthansa logo]()
$785
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/39:30 am -
Nonstop8h 20m
Mon 9/712:16 pm -
1 stop15h 59m
Deal found 8/5![United Airlines logo]()
$790
This Air France deal was found by Cheapflights users on 8/6. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:05 pm -
2 stops16h 52m
Wed 9/96:25 pm -
2 stops34h 45m
Deal found 8/6![Multiple Airlines logo]()
$737
This Delta deal was found by Cheapflights users on 8/9. 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.
Fri 9/41:05 pm -
1 stop14h 47m
Fri 9/1810:25 am -
1 stop18h 45m
Deal found 8/9![Delta logo]()
$572
Last-minute flights from Ireland to IllinoisDiscover last-minute flight deals from Ireland to Illinois. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Ireland to Illinois. Data last updated August 10, 2026 and is based on user searches.
This lastminute.com deal was found by Cheapflights users on 8/9. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:15 pm -
1 stop21h 15m
Sun 9/610:30 pm -
1 stop11h 40m
Deal found 8/9![Multiple Airlines logo]()
$555
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:05 pm -
1 stop14h 47m
Wed 9/96:00 am -
1 stop23h 10m
Deal found 8/6![KLM logo]()
$556
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am -
1 stop14h 00m
Mon 9/75:10 pm -
1 stop15h 30m
Deal found 8/6![KLM logo]()
$553
This Delta deal was found by Cheapflights users on 8/9. 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.
Thu 9/36:15 am -
1 stop14h 00m
Mon 9/73:20 pm -
2 stops17h 20m
Deal found 8/9![Delta logo]()
$554
This KLM deal was found by Cheapflights users on 8/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:15 am -
2 stops17h 46m
Mon 9/71:19 pm -
2 stops15h 01m
Deal found 8/6![KLM logo]()
$563
This Air France deal was found by Cheapflights users on 8/5. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:05 pm -
1 stop29h 55m
Mon 9/76:00 pm -
1 stop11h 10m
Deal found 8/5![Air France logo]()
$570
This Delta deal was found by Cheapflights users on 8/10. 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.
Thu 9/31:05 pm -
1 stop26h 22m
Mon 9/76:00 am -
1 stop23h 10m
Deal found 8/10![Delta logo]()
$572
This TravelUp deal was found by Cheapflights users on 8/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:45 pm -
Nonstop8h 30m
Wed 9/238:50 pm -
1 stop11h 45m
Deal found 8/10![Multiple Airlines logo]()
$614
This Delta deal was found by Cheapflights users on 8/7. 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.
Mon 9/2110:50 am -
2 stops17h 54m
Mon 9/281:19 pm -
2 stops19h 21m
Deal found 8/7![Delta logo]()
$560
This KLM deal was found by Cheapflights users on 8/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:15 am -
1 stop14h 15m
Wed 9/304:50 pm -
1 stop11h 25m
Deal found 8/9![KLM logo]()
$557
This Delta deal was found by Cheapflights users on 8/9. 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.
Wed 9/2310:50 am -
2 stops17h 42m
Wed 9/301:29 pm -
2 stops14h 46m
Deal found 8/9![Delta logo]()
$563
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:35 am -
Nonstop8h 25m
Wed 11/49:50 pm -
1 stop10h 15m
Deal found 8/7![Aer Lingus logo]()
$612
One-way flights from Ireland to IllinoisSearch for one-way flight options from Ireland to Illinois. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
Search for one-way flight options from Ireland to Illinois. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:00 pm -
3 stops26h 50m
Deal found 8/5![Multiple Airlines logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 9/308:50 am -
3 stops39h 00m
Deal found 8/9![Multiple Airlines logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 11/25:30 pm -
3 stops46h 10m
Deal found 8/6![Multiple Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 11/48:30 pm -
3 stops43h 10m
Deal found 8/9![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:35 pm -
3 stops52h 47m
Deal found 8/7![Multiple Airlines logo]()
$441
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 8/277:55 am -
3 stops39h 27m
Deal found 8/6![Multiple Airlines logo]()
$445
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 10/315:05 pm -
2 stops56h 34m
Deal found 8/6![Multiple Airlines logo]()
$449
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 8/268:00 pm -
3 stops51h 22m
Deal found 8/6![Multiple Airlines logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:00 pm -
2 stops49h 54m
Deal found 8/7![Multiple Airlines logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:00 pm -
3 stops42h 00m
Deal found 8/7![Multiple Airlines logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:00 pm -
2 stops30h 08m
Deal found 8/7![Multiple Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Wed 9/308:50 pm -
3 stops51h 01m
Deal found 8/9![Multiple Airlines logo]()
$477
Find flight deals from Ireland to Illinois
Keep the following information in mind while searching for Ireland to Illinois flight deals. Data was last updated August 10, 2026.
Round-trip from | $542 (Gotogate) |
|---|---|
One-way from | $369 (Kiwi.com) |
Popular in | August |
Cheapest in | November |
Average price | $865 |
Good round-trip deal | $710 or less |
Good one-way deal | $717 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ireland 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 2,558,603 searches. Data last updated August 10, 2026.
Use the filters below to find and compare flights from Ireland to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CorkChicago
ORK Cork - ORD Chicago O'Hare Intl
ORKORD
Cork
Thu 11/12
5:40 am-2:25 pm
1 stop14h 45m
Chicago O'Hare Intl
Sun 11/15
6:25 pm-2:45 pm
1 stop14h 20m
$552
CorkChicago
ORK Cork - ORD Chicago O'Hare Intl
ORKORD
Cork
Thu 11/12
5:40 am-2:25 pm
1 stop14h 45m
Chicago O'Hare Intl
Sun 11/15
2:44 pm-2:45 pm
2 stops18h 01m
$552
CorkChicago
ORK Cork - ORD Chicago O'Hare Intl
ORKORD
Cork
Wed 9/23
6:15 am-2:30 pm
1 stop14h 15m
Chicago O'Hare Intl
Wed 9/30
4:50 pm-10:15 am
1 stop11h 25m
$557
CorkChicago
ORK Cork - ORD Chicago O'Hare Intl
ORKORD
Cork
Fri 10/23
6:15 am-2:15 pm
1 stop14h 00m
Chicago O'Hare Intl
Mon 10/26
10:30 am-10:40 am
2 stops19h 10m
$557
CorkChicago
ORK Cork - ORD Chicago O'Hare Intl
ORKORD
Cork
Thu 9/3
10:50 am-9:47 pm
2 stops16h 57m
Chicago O'Hare Intl
Mon 9/7
5:10 pm-2:40 pm
1 stop15h 30m
$558
CorkChicago
ORK Cork - ORD Chicago O'Hare Intl
ORKORD
Cork
Wed 9/23
6:15 am-2:30 pm
1 stop14h 15m
Chicago O'Hare Intl
Wed 9/30
1:29 pm-10:15 am
2 stops14h 46m
$558
CorkChicago
ORK Cork - MDW Chicago Midway
ORKMDW
Cork
Mon 9/21
10:50 am-10:44 pm
2 stops17h 54m
Chicago Midway
Mon 9/28
1:19 pm-2:40 pm
2 stops19h 21m
$560
CorkChicago
ORK Cork - MDW Chicago Midway
ORKMDW
Cork
Thu 9/3
6:15 am-6:01 pm
2 stops17h 46m
Chicago Midway
Mon 9/7
1:19 pm-10:20 am
2 stops15h 01m
$563
CorkChicago
ORK Cork - MDW Chicago Midway
ORKMDW
Cork
Wed 9/23
6:15 am-6:33 pm
2 stops18h 18m
Chicago Midway
Wed 9/30
9:59 am-10:15 am
2 stops18h 16m
$563
ShannonChicago
SNN Shannon - ORD Chicago O'Hare Intl
SNNORD
Shannon
Thu 9/3
1:05 pm-12:17 pm
1 stop29h 12m
Chicago O'Hare Intl
Sun 9/13
6:00 am-11:10 am
1 stop23h 10m
$572
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ireland to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Ireland with our price prediction graph.
SNN-ORD
DUB-ORD
ORK-ORD
DUB-MDW
DUB-STL
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 Ireland to Illinois
IE0-USIL
SNN-ORD
DUB-ORD
ORK-ORD
DUB-MDW
What is the cheapest month to book a flight from Ireland to Illinois?
Currently, November is the cheapest month in which you can book a flight from Ireland to Illinois (average of $476). Flying from Ireland to Illinois in August is currently the most expensive (average of $847). 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 IE to IL?
Find hourly flight availability from Ireland 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 August 10, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ireland to Illinois as you normally would.
Weekly flight availability from Ireland to Illinois
Explore weekly flight availability from Ireland 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 August 10, 2026.
The most flights from IE0 to USIL are scheduled on a Friday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).
How far ahead should I book a flight from Ireland to Illinois?
The best time to book flights from Ireland to Illinois is 14 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 August 10, 2026.
Peruse reviews from past customers who have flown with United Airlines and Aer Lingus from Ireland 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
7.1
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Related info for your journey
Find useful and relevant information for your journey from Ireland 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.
Airlines
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Ireland 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 Ireland to Illinois by cabin class
Find flights from Ireland to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ireland and Illinois flights
Browse other Ireland and Illinois flight options. Last updated on August 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Ireland after your stay in Illinois
Ireland to Illinois flights
Consider these flights traveling from Ireland to Illinois.
Top 2 airlines flying from Ireland to Illinois
Discover the top 2 airlines that operate flights from Ireland 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 2,558,603 searches. Data last updated August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$463 | Average$678 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$473 | Average$680 | FlexibilityNo cancel fee | On-time69% |