$818+ Cheap flights from Northern Ireland 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
Dec 14 — Dec 211
1 adult, Economy
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Cheapest flights from Northern Ireland to IllinoisExplore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 14, 2025.
Explore the most affordable flight options available from Northern Ireland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 14, 2025.
This American Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:05 amBHD - ORD
1 stop13h 55mAmerican Airlines
Mon 11/249:45 pmORD - BHD
1 stop10h 30mAmerican Airlines
Deal found 11/12![American Airlines logo]()
$1,109
This Mytrip deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” 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.
Sun 12/281:00 pmBFS - ORD
2 stops35h 25mMultiple Airlines
Sun 1/46:50 pmORD - BFS
2 stops18h 05mMultiple Airlines
Deal found 11/13![Multiple Airlines logo]()
$1,263
This Mytrip deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:25 pmBFS - ORD
2 stops21h 35mMultiple Airlines
Sat 1/311:50 amORD - BFS
2 stops27h 50mMultiple Airlines
Deal found 11/12![Multiple Airlines logo]()
$1,340
Cheap flight deals from Northern Ireland to Illinois
Keep the following information in mind while searching for Northern Ireland to Illinois flight deals. Data was last updated November 14, 2025.
Round-trip from | $818 (American Airlines) |
|---|
Cheapflights Fare Finder
Customize your flight search to find flights from Northern 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 November 14, 2025.
Use the filters below to find and compare flights from Northern Ireland to Illinois that are best for you.
Fly from
Northern Ireland
Fly to
Illinois
Route
Depart
Return
Price
BelfastChicago
BHD - ORD
BHDORD
Belfast City
Thu 3/5
9:05 am-5:00 pm
1 stop13h 55m
Chicago O'Hare Intl
Mon 3/9
6:30 pm-6:35 pm
2 stops19h 05m
$818
BelfastChicago
BFS - ORD
BFSORD
Belfast Intl
Sun 12/28
1:00 pm-6:25 pm
2 stops35h 25m
Chicago O'Hare Intl
Sun 1/4
6:50 pm-6:55 pm
2 stops18h 05m
$1,263
BelfastChicago
BFS - ORD
BFSORD
Belfast Intl
Sat 12/27
10:25 pm-2:00 pm
2 stops21h 35m
Chicago O'Hare Intl
Sat 1/3
11:50 am-9:40 pm
2 stops27h 50m
$1,340
BelfastChicago
BHD - ORD
BHDORD
Belfast City
Fri 5/1
2:40 pm-7:00 pm
2 stops34h 20m
Chicago O'Hare Intl
Fri 5/8
3:45 pm-8:55 pm
2 stops23h 10m
$3,540
BelfastChicago
BHD - ORD
BHDORD
Belfast City
Fri 5/1
6:35 am-6:15 pm
1 stop17h 40m
Chicago O'Hare Intl
Fri 5/8
9:15 pm-6:15 pm
1 stop15h 00m
$3,662
BelfastChicago
BHD - ORD
BHDORD
Belfast City
Fri 5/1
9:30 am-7:00 pm
2 stops15h 30m
Chicago O'Hare Intl
Fri 5/8
7:05 pm-3:30 pm
1 stop14h 25m
$3,667
Best time to book a flight from Northern Ireland to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Northern Ireland with our price prediction graph.
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 Northern Ireland to Illinois
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